CN102768311A - Method and device for recognizing phase of power line - Google Patents
Method and device for recognizing phase of power line Download PDFInfo
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- CN102768311A CN102768311A CN201210284674XA CN201210284674A CN102768311A CN 102768311 A CN102768311 A CN 102768311A CN 201210284674X A CN201210284674X A CN 201210284674XA CN 201210284674 A CN201210284674 A CN 201210284674A CN 102768311 A CN102768311 A CN 102768311A
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Abstract
The invention discloses a method and a device for recognizing the phase of a power line. The method includes: receiving a phase recognizing reply transmitted by a node to be tested, wherein the phase recognizing reply is transmitted from the node to be tested when the node to be tested detects that the power signals transmitted on the power line of the node is in a zero-crossing point, wherein the phase recognizing reply contains frame data message; obtaining the receiving time of the phase recognizing reply and the transmission time of the frame data message; and computing the receiving time and the transmission time, and recognizing the phase of the power line where the node to be tested locates. By means of the method and the device, the mode that the power line is recognized by judging whether the phase recognizing replay transmitted by the node to be tested can be received is changed, and the phase of the power line can be recognized by a time computing mode, so that when phase crossing during transmission of the phase recognizing replay occurs, the phase of the power line can be accurately recognized in a time computing mode.
Description
Technical field
The present invention relates to field of power, in particular, relate to separate recognition methods of a kind of line of electric force and device.
Background technology
In the power distribution station, transformer is being undertaken distribution and the vital task of sending electricity, and the equilibrium relation of three-phase load is to the proportion of goods damageds of reliability, stability and the transformer-supplied of transformer-supplied.In order to improve the distribution utilization factor, need load be moved on to lighter other one the supplying power on mutually of load than some electricity consumers on the heavy phase, with the load of balance three-phase.So this just needs accurately to judge the phase place of load than the place of the electricity consumer on the heavy phase.
At present; There are two kinds of platform district identifiers that are used to judge the separate identification of line of electric force; A kind of pulse current principle of utilizing; Send pulse current at tested node on mutually, with the receiving node received pulse signal of the same distribution side that goes up mutually of tested node, thereby judge the platform district identifier of the separate information of tested node; A kind of in addition low pressure carrier wave that utilizes detects principle, sends carrier signal at tested node on mutually, with the receiving node reception carrier signal of the same distribution side that goes up mutually of tested node, thereby judge the platform district identifier of the separate information of tested node.
Yet, the realization principle of these two kinds of platform district identifiers all be samely carry out that tested node detection signal sends on mutually, transmission and receiving, whether successfully receive tested node detection signal according to the receiving node of distribution side and judge separate information.But the tested node detection signal on the homophase and the receiving node of distribution side can't not accomplished reception; Therefore go up mutually when disturbing that perhaps load is big especially when a certain; The string phase takes place in tested node detection signal in transmission course; The receiving node of distribution side can't receive tested node detection signal, thereby can not correctly discern the separate of line of electric force.
Summary of the invention
To the problems referred to above; The present invention provides a kind of line of electric force separate recognition methods; The string phase takes place in tested node detection signal in the prior art in transmission course to solve, and the receiving node of distribution side can't receive tested node detection signal, thereby can not correctly discern the separate problem of line of electric force.Technical scheme is following:
Based on the application's one side, provide a kind of line of electric force separate recognition methods, be applied to comprise in the power equipment:
Receive the separate identification request that tested node sends, send from tested node when the electric power signal that said separate identification request is transmitted to self place line of electric force in tested node detection is in zero crossing, and carry the frame data message in the said separate identification request;
Obtain the time of reception that receives said separate identification request and the transmission time of said frame data message;
Said time of reception and said transmission time are carried out computing,, discern the separate of said tested node place line of electric force according to operation result.
Preferably, the separate identification request that the tested node of said reception sends comprises: after receiving tested node fixed interval delay time Δ T1, and the said separate identification request of transmission.
Preferably, said time of reception and said transmission time are carried out computing,, discern said tested node place the separate of line of electric force and comprise according to operation result:
According to formula Δ T=[(Δ T1+ Δ T4) – Δ T3x] % (T/2), said time of reception and said transmission time are carried out computing, wherein; Δ T1+ Δ T4 is the transmission time, and Δ T4 is the transmitting time of separate identification request, and T is the cycle of said electric power signal; Δ T3x is a time of reception, and x representes the separate of line of electric force, Δ T3A=(Δ T1+ Δ T4) % (T/2); Δ T3B=(T/6+ Δ T1+ Δ T4) % (T/2), Δ T3C=(T/3+ Δ T1+ Δ T4) % (T/2);
Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T;
Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T;
Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
Preferably; Behind the tested node fixed interval of the said reception delay time Δ T1; The said separate identification request of sending comprises: after receiving tested node fixed interval delay time Δ T1; The said separate identification request of transmitting via via node again, wherein said via node is connected between said tested node and the receiving node.
Preferably, said frame data message comprises: handover number N, when said via node was transmitted, said handover number N added 1 automatically in said separate identification request.
Preferably, said separate identification request is transmitted through said via node and comprised: said separate identification request is transmitted behind said via node fixed interval delay time Δ T2.
Preferably, said time of reception and said transmission time are carried out computing,, discern said tested node place the separate of line of electric force and comprise according to operation result:
According to formula Δ T=[(Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4) – Δ T3x] % (T/2), said time of reception and said transmission time are carried out computing, wherein; Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4 is the transmission time, and Δ T4 is the transmitting time of separate identification request, and N is said handover number; The initial value that N is set is N=0, and when said separate identification request was transmitted through said via node, said handover number N added 1 automatically; T is the cycle of said electric power signal; Δ T3x is a time of reception, and x representes the separate of line of electric force, Δ T3A=[Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2); Δ T3B=[T/6+ Δ T 1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2), Δ T3C=[T/3+ Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2);
Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T;
Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T;
Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
Preferably, also comprise:
Send separate identification and respond, reply response, finish to send separate identification and respond, and carry in the said separate identification response and reply the frame data message until the reception that receives said tested node transmission in the given time to said tested node.
Preferably, also comprise: do not receive the reception answer response that said tested node sends in the given time, send the signal warning information.
Preferably, said answer frame data message comprises: the handover number N of the frame data message that carries in the transmission number of times R of the answer frame data message that carries in said tested node address, handover number M, the said separate identification response and the said separate identification request.
Based on the application on the other hand, also provide a kind of line of electric force separate recognition device, be applied to comprise in the power equipment:
Receiving element; Be used to receive the separate identification request that tested node sends; Send from tested node when the electric power signal that said separate identification request is transmitted on the line of electric force to self place in tested node detection is in zero crossing, and carry the frame data message in the said separate identification request;
Acquiring unit is used to obtain the time of reception that receives said separate identification request and the transmission time of said frame data message;
The computing recognition unit is used for said time of reception and said transmission time are carried out computing, according to operation result, discerns the separate of said tested node place line of electric force.
Preferably, after said receiving element specifically is used to receive tested node fixed interval delay time Δ T1, the said separate identification request of transmission.
Preferably, said computing recognition unit specifically is used for the % (T/2) according to formula Δ T=[(Δ T1+ Δ T4) – Δ T3x], and said time of reception and said transmission time are carried out computing; Wherein, Δ T1+ Δ T4 is the transmission time, and Δ T4 is the transmitting time of separate identification request; T is the cycle of said electric power signal, and Δ T3x is a time of reception, and x representes the separate of line of electric force; Δ T3A=(Δ T1+ Δ T4) % (T/2), Δ T3B=(T/6+ Δ T1+ Δ T4) % (T/2), Δ T3C=(T/3+ Δ T1+ Δ T4) % (T/2); Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
Preferably, after said receiving element specifically is used to receive tested node fixed interval delay time Δ T1, the said separate identification request of transmitting via via node again, wherein said via node is connected between said tested node and the receiving node.
Preferably, after said receiving element specifically is used to receive tested node fixed interval delay time Δ T1, again via the said separate identification request of transmitting behind the via node fixed interval delay time Δ T2.
Preferably, said computing recognition unit specifically is used for the % (T/2) according to formula Δ T=[(Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4) – Δ T3x], and said time of reception and said transmission time are carried out computing; Wherein, Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4 is the transmission time, and Δ T4 is the transmitting time of separate identification request; N is a handover number, and the initial value that N can be set is N=0, when said separate identification request is transmitted through said via node; Said handover number N adds 1 back automatically and is transmitting, and T is the cycle of said electric power signal, and Δ T3x is a time of reception; X representes the separate of line of electric force; Δ T3A=[Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2), Δ T3B=[T/6+ Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2), Δ T3C=[T/3+ Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2); Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
Preferably; Also comprise: transmitting element specifically is used to send separate identification and responds to said tested node, until receiving the reception answer response that said tested node sends in the given time; Finish to send separate identification response, and carry in the said separate identification response and reply the frame data message.
Preferably, also comprise: Alarm Unit, specifically be used for not receiving the reception answer response that said tested node sends in the given time, send the signal warning information.
Preferably, said answer frame data message comprises:
The handover number N of the frame data message that carries in the transmission number of times R of the answer frame data message that carries in said tested node address, handover number M, the said separate identification response and the said separate identification request.
Use technique scheme; After the separate identification request that receives tested node transmission; Obtain the time of reception that receives separate identification request and the transmission time of frame data message, through the operation result in time of reception and transmission time being discerned the separate of tested node place line of electric force.That is to say; The application changes existing asks to discern the separate mode of line of electric force through whether receiving the separate identification that tested node sends; And adopt the temporal calculation mode to confirm that line of electric force is separate; Therefore in separate identification request the string phase time takes place in transmission course, it is separate still can accurately to discern line of electric force through the temporal calculation mode.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the application, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of the separate recognition methods of a kind of line of electric force that Fig. 1 provides for the application;
The signal waveforms of the separate recognition methods of a kind of line of electric force that Fig. 2 provides for the application;
The signals transmission sequential chart of the separate recognition methods of a kind of line of electric force that Fig. 3 provides for the application;
The another kind of schematic flow sheet of the separate recognition methods of a kind of line of electric force that Fig. 4 provides for the application;
The another kind of signals transmission sequential chart of the separate recognition methods of a kind of line of electric force that Fig. 5 provides for the application;
Another schematic flow sheet of the separate recognition methods of a kind of line of electric force that Fig. 6 provides for the application;
A kind of structural representation of the separate recognition device of a kind of line of electric force that Fig. 7 provides for the application;
The another kind of structural representation of the separate recognition device of a kind of line of electric force that Fig. 8 provides for the application.
Embodiment
To combine the accompanying drawing among the application embodiment below, the technical scheme among the application embodiment is carried out clear, intactly description, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the application's protection.
An embodiment
See also Fig. 1, it shows the schematic flow sheet of the separate recognition methods of a kind of line of electric force that the application provides, and this method may further comprise the steps:
S101: receive the separate identification request that tested node sends.
Wherein, send from tested node when the electric power signal that separate identification request is transmitted on the line of electric force to self place in tested node detection is in zero crossing, and carry the frame data message in the separate identification request.
In the present embodiment, electric power signal is selected the 50Hz power frequency component in the low-voltage power spider lines, its cycle T=20ms for use.Two zero crossings are arranged on mutually in that an electric power signal is every in the cycle; When the electric power signal that tested node detection is transmitted on the line of electric force to self place is in zero crossing; Tested node sends separate identification request, so just can send once separate identification request in every half period.
S102: obtain the time of reception that receives separate identification request and the transmission time of frame data message.
In the present embodiment, the time of reception of separate identification request is: the time of writing down during separate identification request that the receiving node of distribution side receives that tested node sends.For example, the receiving node of distribution side detects the electric power signal on the A phase line of electric force constantly, when the electric power signal on detecting A phase line of electric force is in zero crossing, writes down an A and goes up the zero crossing time mutually.Here, can at the receiving node place of distribution side one timer be set according to client's needs, when the receiving node of distribution side detected the zero crossing that A goes up mutually, the timer zero clearing was since 0 reclocking.When the separate identification request that receives that tested node sends, timer stops, and preserves present timing device writing time, the time of reception of promptly separate identification request.
The transmission time of frame data message is: tested node sends the receiving node that separate identification asks distribution side and receives the calculated value that tested node sends separate identification request.Here, can carry relevant informations such as separate identification request length, tested node address, host node address in the frame data message, obtain calculated value through the data computation that reads in the frame data message.
S103: time of reception and transmission time are carried out computing,, discern the separate of tested node place line of electric force according to operation result.
In the present embodiment; The electric power signal that transmits on the line of electric force of tested node detection self place sends separate identification request when being in zero crossing, but because the detection error that system itself exists can't reach the separate identification request of synchronized transmission when zero crossing; There are certain deviation in the zero crossing moment and separate identification request delivery time; Therefore, define a constant time lag time Δ T1 here, send separate identification request when tested node detection arrives zero crossing behind the constant time lag time Δ T1.Δ T1 value is different in different facility environments, and the value of Δ T1 can artificially be set according to the circuit network environment of power distribution station here.
Especially; Because separate identification request has certain length; There is different transmitting times in the separate identification request of sending different length; The required transmitting time of separate identification request of sending equal length is the same, and in order to obtain to send the separate required transmission time of identification request of different length, the required transmission time of separate identification request can convert according to the separate identification request length of carrying in the frame data message; Obtain the transmission time Δ T4 of separate identification request, i.e. the transmission time Δ T4 of frame data message through converting.
Certainly, in the present embodiment, can also preestablish transmission time Δ T4, this transmission time Δ T4 is used to guarantee that the separate identification request of different length can be from the complete receiving node that is sent to of tested node in this time period.
Please combine Fig. 2 and Fig. 3; Fig. 2 shows the signal waveforms of the separate recognition methods of a kind of line of electric force that the application provides; Fig. 3 shows the signals transmission sequential chart of the separate recognition methods of a kind of line of electric force that the application provides, and further sets forth the realization principle of the separate recognition methods of explanation line of electric force.
When tested node detection is in zero crossing mutually to A, B or C, behind constant time lag time Δ T1, send separate identification request.Because electric power signal adopts the three-phase transmission mode, when tested node detects the zero crossing that A, B and C go up mutually simultaneously successively, and combine Fig. 2 to get; The transmission zero-time that A, B and C go up separate identification request mutually is respectively: TA=Δ T1, TB=T/6+ Δ T1, the relation of TC=T/3+ Δ T1; And then can release; Do not detect successively simultaneously at tested node under the situation of the zero crossing that A, B and C go up mutually, the zero crossing on A, B, the C three-phase has the relation of n T/6 doubly, in the present embodiment; T is the cycle of the 50Hz power frequency component in the low-voltage power spider lines of selecting for use in the electric power signal, and promptly the zero crossing on A, B, the C three-phase has the mistiming of n 3.333ms doubly.
The receiving node of distribution side detects the electric power signal that transmits on arbitrary phase line of electric force constantly, receives the separate identification request of sending on the homophase not simultaneously, writes down the time of reception of the separate identification request that tested node sends on the homophase not.
In the present embodiment, the receiving node of distribution side detects the zero crossing that A goes up mutually constantly, and receives the separate identification request that the mutually tested node of A, the mutually tested node of B and the mutually tested node of C send.When sending separate identification request, the signal that A, B, C go up has mutually all been fixed delay time Δ T1, and separate identification request its required transmitting time Δ T4 identical for length also is the same.The receiving node of distribution side utilizes timer record A, B, C to go up time of reception Δ T3A, Δ T3B and the Δ T3C of separate identification request mutually after receiving the separate identification request that A, B, C send on mutually.From Fig. 3, can draw, the time value of Δ T3A, Δ T3B and Δ T3C is different, and has following relation:
ΔT3A=(ΔT1+ΔT4)%(T/2)；
ΔT3B=(T/6+ΔT1+ΔT4)%(T/2)；
ΔT3C=(T/3+ΔT1+ΔT4)%(T/2)。
The transmission time of separate identification request; Be that tested node sends the receiving node that separate identification asks distribution side and receives the calculated value that tested node sends separate identification request; Be Δ T1+ Δ T4, T is the cycle of the 50Hz power frequency component in the low-voltage power spider lines of selecting for use in the electric power signal.According to formula Δ T=[(Δ T1+ Δ T4) – Δ T3x] % (T/2), the time of reception and the transmission time of separate identification request are carried out computing, through the judgement of Δ T being discerned the separate of tested node place line of electric force.
Particularly, greater than-T/12, when being not more than T/12, that discerns tested node place line of electric force separately is A phase line of electric force at Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of tested node place line of electric force is B phase line of electric force at Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of tested node place line of electric force is C phase line of electric force at Δ T.
In the present embodiment; After the separate identification request that receives tested node transmission; Obtain the time of reception that receives separate identification request and the transmission time of frame data message, through the operation result in time of reception and transmission time being discerned the separate of tested node place line of electric force.The application changes existing asks to discern the separate mode of line of electric force through whether receiving the separate identification that tested node sends; And adopt the temporal calculation mode to confirm that line of electric force is separate; Therefore in separate identification request the string phase time takes place in transmission course, it is separate still can accurately to discern line of electric force through the temporal calculation mode.
Another embodiment
See also Fig. 4, it shows the another kind of schematic flow sheet of the separate recognition methods of a kind of line of electric force that the application provides.This method may further comprise the steps:
S201: receive the separate identification request of the tested node transmission of transmitting via via node.
Because the complicacy and the diversity of power line network, in some district signal attenuation bigger, interference ratio is bigger in some district; Be difficult to guarantee point-to-point direct communication success ratio that so in the present embodiment, trunking scheme is adopted in the signal transmission; The signal that tested node sends is transmitted through via node; Transmit the back through multistage via node and receive, thereby under the prerequisite of the signal transmitting power that does not improve tested node, make transmission range increase; Improve the signal transmission efficiency effectively, and then can realize all standing of signal.
See also Fig. 5, it shows the another kind of signals transmission sequential chart of the separate recognition methods of a kind of line of electric force that the embodiment of the invention provides, and the signal that tested node sends is transmitted through N via node, finally by the receiving node reception of distribution side.In Fig. 5; Δ T2 is the constant time lag time; Via node is after receiving separate identification request, and behind the fixed interval delay time Δ T2, the side sends separate identification request; Guaranteeing that separate identification request sends receiving the back fully, thereby the separate identification request that guarantees to send to next via node or receiving node is complete.
In the present embodiment; Carry the frame data message in the separate identification request; The frame data message comprises handover number N; Set the handover number N initial value N=0 in the separate identification claim frame data message, every through the one-level via node, the handover number N in the separate identification claim frame data message adds 1 automatically.Can produce time-delay during the handover number N of via node in revising separate identification claim frame data message, so via node is after receiving separate identification request, behind the fixed interval delay time Δ T2, the side sends separate identification request.
S202: obtain the time of reception that receives separate identification request and the transmission time of said frame data message.
In the present embodiment, the difference of step S202 and step S 102 is that the transmission time is Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4, and other and this present embodiment of step S 102 something in common are no longer set forth.
S203: time of reception and transmission time are carried out computing,, discern the separate of tested node place line of electric force according to operation result.
After the receiving node of distribution side receives separate identification request, calculate the separate of tested node according to Δ T1, Δ T2, Δ T3A, Δ T3B, Δ T3C, Δ T4 and N.Wherein, there are following relation in Δ T1, Δ T2, Δ T3A, Δ T3B, Δ T3C, Δ T4 and N:
ΔT3A=[ΔT?1+(ΔT4+ΔT2)*N+ΔT4]%(T/2)；
ΔT3B=[T/6+ΔT1+(ΔT4+ΔT2)*N+ΔT4]%(T/2)；
ΔT3C=[T/3+ΔT1+(ΔT4+ΔT2)*N+ΔT4]%(T/2)。
The transmission time of separate identification request; Be that tested node sends the receiving node that separate identification asks distribution side and receives the calculated value that tested node sends separate identification request; Be Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4, T is the cycle of the 50Hz power frequency component in the low-voltage power spider lines of selecting for use in the electric power signal.According to formula Δ T=[Δ T3x – (Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4)] % (T/2), the time of reception and the transmission time of separate identification request are carried out computing, through the judgement of Δ T being discerned the separate of tested node place line of electric force.
Above-mentioned judgement to Δ T discern tested node place line of electric force separate can for, greater than-T/12, when being not more than T/12, that discerns tested node place line of electric force separately is A phase line of electric force at Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of tested node place line of electric force is B phase line of electric force at Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of tested node place line of electric force is C phase line of electric force at Δ T.
In the present embodiment, trunking scheme is adopted in the signal transmission, and Dang Tai district scale is big, distance; When the separate identification request that tested node sends can not directly be sent to the receiving node of distribution side; The separate identification request that tested node sends is transmitted through via node, need not strengthen the transmitted power of sending point and the transmission that realizes separate identification request, and is received by the receiving node of distribution side; Make transmission range reach all standing, improved the transmission efficiency of tested node effectively.
Another embodiment
See also Fig. 6, it shows another schematic flow sheet of the separate recognition methods of a kind of line of electric force that the application provides.This method is further comprising the steps of:
S204: send separate identification and respond,, finish to send separate identification response until receiving the reception answer response that tested node sends in the given time to tested node.
In the present embodiment, the receiving node of distribution side sends separate identification and responds to tested node after the identification line of electric force is separate, has accomplished separate identification to inform tested node
Wherein, carry answer frame data message in the separate identification response.
In the present embodiment; The answer frame data message that carries in the separate identification response comprises: tested node address, handover number M, separate recognition result are replied frame and are sent the handover number N in number of times R and the separate identification claim frame data message; Wherein, Because the path of separate identification response process in the round-trip transmission process is not necessarily the same; Handover number M has write down the relay forwarding times that carries the separate identification response of replying the frame data message, and the handover number N in the separate identification claim frame data message has write down the relay forwarding times of separate identification claim frame data message, through contrasting both numerical values recited; Be convenient to the transmission course of the clear signal of user; Separate recognition result is replied the size that size that frame sends number of times R has been represented signal transmission success rate, replys frame and sends the number of times that response is replied in the value of number of times R and reception that tested node place receives through checking separate recognition result, judges whether to need to arrange via node.
S205: do not receive the reception answer response that tested node sends in the given time, send the signal warning information.
After tested node receives the answer frame data message that the receiving node of distribution side sends; And send to receive and reply the receiving node that distribution side is given in response; Receiving node receives the reception that tested node sends at the appointed time and replys response, finishes to send separate identification response, has guaranteed that tested node issues the receiving node of the separate identification request of the receiving node distribution side of distribution side and receive; Tested node also obtains its separate information simultaneously, is convenient to the user and reads information.Do not reply response when the receiving node of distribution side in the given time receives the reception that tested node sends, send the signal warning information, inform that subscriber signal can not accomplish transmission, need to arrange via node.
For aforesaid each method embodiment; For simple description; So it all is expressed as a series of combination of actions, but those skilled in the art should know that the application does not receive the restriction of described sequence of movement; Because according to the application, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the instructions all belongs to preferred embodiment, and related action and module might not be that the application is necessary.
Embodiment is corresponding with said method, disclosed herein as well is the separate recognition device of a kind of line of electric force, is applied in the power equipment, and its structural representation sees also Fig. 7, comprising: receiving element 11, acquiring unit 12 and computing recognition unit 13, wherein,
Receiving element 11 is used to receive the separate identification request that tested node sends.Wherein, send from tested node when the electric power signal that separate identification request is transmitted on the line of electric force to self place in tested node detection is in zero crossing, and carry the frame data message in the separate identification request.
In the present embodiment, after receiving element specifically is used to receive tested node fixed interval delay time Δ T1, the separate identification request of transmission.
Acquiring unit 12 is used to obtain the time of reception that receives separate identification request and the transmission time of frame data message.
In the present embodiment, the time of reception of separate identification request is: the time of writing down during separate identification request that the receiving node of distribution side receives that tested node sends.For example, the receiving node of distribution side detects the electric power signal on the A phase line of electric force constantly, when the electric power signal on detecting A phase line of electric force is in zero crossing, writes down an A and goes up the zero crossing time mutually.Here, can at the receiving node place of distribution side timer be set according to client's needs, when the receiving node of distribution side detected the zero crossing that A goes up mutually, the timer zero clearing was since 0 reclocking.When the separate identification request that receives that tested node sends, timer stops, and preserves present timing device writing time, the time of reception of promptly separate identification request.
The transmission time of frame data message is: tested node sends the receiving node that separate identification asks distribution side and receives the calculated value that tested node sends separate identification request.Here, carry relevant informations such as separate identification request length, tested node address, host node address in the frame data message, obtain calculated value through the data computation that reads in the frame data message.
After the receiving node of distribution side receives the separate identification request that A, B, C send on mutually; The time value that computing recognition unit 13 in the receiving node utilizes timer record A, B, C to go up time of reception Δ T3A, Δ T3B and the Δ T3C of separate identification request mutually is respectively: Δ T3A=(Δ T1+ Δ T4) % (T/2); Δ T3B=(T/6+ Δ T1+ Δ T4) % (T/2), Δ T3C=(T/3+ Δ T1+ Δ T4) % (T/2).According to formula Δ T=[(Δ T1+ Δ T4) – Δ T3x] % (T/2), the time of reception and the transmission time of separate identification request are carried out computing.Wherein Δ T1+ Δ T4 is that tested node sends the receiving node that separate identification asks distribution side and receives the calculated value that tested node sends separate identification request; Δ T3x is the time of reception of separate identification request; T is the cycle of the 50Hz power frequency component in the low-voltage power spider lines of selecting for use in the electric power signal; X representes the separate of line of electric force, through the judgement of Δ T being discerned the separate of tested node place line of electric force.
RM can for, greater than-T/12, when being not more than T/12, that discerns tested node place line of electric force separately is A phase line of electric force at Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of tested node place line of electric force is B phase line of electric force at Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of tested node place line of electric force is C phase line of electric force at Δ T.
Another embodiment
Because the complicacy and the diversity of power line network, in some district signal attenuation bigger, interference ratio is bigger in some district; Be difficult to guarantee point-to-point direct communication success ratio; So in the present embodiment, trunking scheme is adopted in the signal transmission, and the signal that tested node sends is transmitted through via node; Transmitting the back through multistage via node receives; The separate identification request that this moment, receiving element 11 received can be for behind the tested node fixed interval delay time Δ T1, the separate identification request of transmitting via via node again, and wherein via node is connected between tested node and the receiving node.Especially, separate identification request is the separate identification request of transmitting via behind the via node fixed interval delay time Δ T2.
In the present embodiment; Separate identification request is transmitted through multistage via node, because via node can delay time when transmitting separate identification request, so after via node receives separate identification request; Fixed interval delay time Δ T2 transmits separate identification request again.
After computing in the receiving node of distribution side identification request 13 receives the separate identification request that A, B, C send on mutually; The time value of utilizing timer record A, B, C to go up time of reception Δ T3A, Δ T3B and the Δ T3C of separate identification request mutually is respectively: Δ T3A=[Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2); Δ T3B=[T/6+ Δ T 1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2), Δ T3C=[T/3+ Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2).Wherein, Δ T 1+ (Δ T4+ Δ T2) * N+ Δ T4 is the transmission time of frame data message, and Δ T4 is the transmitting time of separate identification request, comprises handover number N in the via node; The initial value that N can be set is N=0; Separate identification request is when via node is transmitted, and handover number N adds 1 automatically, more separate identification request is transmitted.T is the cycle of the 50Hz power frequency component in the low-voltage power spider lines of selecting for use in the electric power signal, and Δ T3x is a time of reception, and x representes the separate of line of electric force.At this moment; Computing recognition unit 13 is according to formula Δ T=[(Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4) – Δ T3x] % (T/2); The time of reception of separate identification request and the transmission time of frame data message are carried out computing, through the judgement of Δ T being discerned the separate of tested node place line of electric force.
RM can for, greater than-T/12, when being not more than T/12, that discerns tested node place line of electric force separately is A phase line of electric force at Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of tested node place line of electric force is B phase line of electric force at Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of tested node place line of electric force is C phase line of electric force at Δ T.
The separate identification request that tested node sends can adopt trunking scheme to send.Dang Tai district scale is big, during distance; The receiving node of distribution side can not be directly sent in the separate identification request that tested node sends sometimes; And the separate identification request of adopting the tested node of trunking scheme to send can be transmitted through via node, need not strengthen the transmitted power of sending point and realizes transmission, and received by the receiving node of distribution side; Make transmission range reach all standing, improved the transmission efficiency of tested node effectively.
Another embodiment
See also Fig. 8, it shows the another kind of structural representation of the separate recognition device of a kind of line of electric force that the application provides, on the basis of Fig. 7; Also comprise: transmitting element 14 and Alarm Unit 15; Wherein, transmitting element 14 specifically is used to send separate identification and responds to tested node, until receiving the reception answer response that tested node sends in the given time; Finish to send separate identification response, and carry in the separate identification response and reply the frame data message.Alarm Unit 15 specifically is used for not receiving the reception answer response that tested node sends in the given time, sends the signal warning information.
In the present embodiment, replying the frame data message comprises: the handover number N of the frame data message that carries in the transmission number of times R of the answer frame data message that carries in tested node address, handover number M, the separate identification response and the separate identification request.The feedback information that the receiving node of distribution side will receive after the next separate identification request of tested node generation sends it back tested node; Guarantee that tested node issues the receiving node of separate identification request distribution side of the receiving node of distribution side and receive that tested node also obtains separate information simultaneously.
Need to prove that each embodiment in this instructions all adopts the mode of going forward one by one to describe, what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For device type embodiment, because it is similar basically with method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
Need to prove; In this article; Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability; Thereby make to comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises said key element and also have other identical element.
More than the method and apparatus of the separate identification of a kind of line of electric force that the application provided has been carried out detailed introduction; Used concrete example among this paper the application's principle and embodiment are set forth, the explanation of above embodiment just is used to help to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to the application's thought, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the application.
Claims (19)
1. the separate recognition methods of line of electric force is applied to it is characterized in that in the power equipment, comprising:
Receive the separate identification request that tested node sends, send from tested node when the electric power signal that said separate identification request is transmitted to self place line of electric force in tested node detection is in zero crossing, and carry the frame data message in the said separate identification request;
Obtain the time of reception that receives said separate identification request and the transmission time of said frame data message;
Said time of reception and said transmission time are carried out computing,, discern the separate of said tested node place line of electric force according to operation result.
2. method according to claim 1 is characterized in that, the separate identification request that the tested node of said reception sends comprises: after receiving tested node fixed interval delay time Δ T1, and the said separate identification request of transmission.
3. method according to claim 2 is characterized in that, said time of reception and said transmission time are carried out computing, according to operation result, discerns said tested node place the separate of line of electric force and comprises:
According to formula Δ T=[(Δ T1+ Δ T4) – Δ T3x] % (T/2), said time of reception and said transmission time are carried out computing, wherein; Δ T1+ Δ T4 is the transmission time, and Δ T4 is the transmitting time of separate identification request, and T is the cycle of said electric power signal; Δ T3x is a time of reception, and x representes the separate of line of electric force, Δ T3A=(Δ T1+ Δ T4) % (T/2); Δ T3B=(T/6+ Δ T1+ Δ T4) % (T/2), Δ T3C=(T/3+ Δ T1+ Δ T4) % (T/2);
Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T;
Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T;
Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
4. method according to claim 2; It is characterized in that; Behind the tested node fixed interval of the said reception delay time Δ T1; The said separate identification request of sending comprises: after receiving tested node fixed interval delay time Δ T1, and the said separate identification request of transmitting via via node again, wherein said via node is connected between said tested node and the receiving node.
5. method according to claim 4 is characterized in that, said frame data message comprises: handover number N, when said via node was transmitted, said handover number N added 1 automatically in said separate identification request.
6. method according to claim 5 is characterized in that, said separate identification request is transmitted through said via node and comprised: said separate identification request is transmitted behind said via node fixed interval delay time Δ T2.
7. method according to claim 6 is characterized in that, said time of reception and said transmission time are carried out computing, according to operation result, discerns said tested node place the separate of line of electric force and comprises:
According to formula Δ T=[(Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4) – Δ T3x] % (T/2), said time of reception and said transmission time are carried out computing, wherein; Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4 is the transmission time, and Δ T4 is the transmitting time of separate identification request, and N is said handover number; The initial value that N is set is N=0, and when said separate identification request was transmitted through said via node, said handover number N added 1 automatically; T is the cycle of said electric power signal; Δ T3x is a time of reception, and x representes the separate of line of electric force, Δ T3A=[Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2); Δ T3B=[T/6+ Δ T 1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2), Δ T3C=[T/3+ Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2);
Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T;
Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T;
Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
8. method according to claim 1 is characterized in that, also comprises:
Send separate identification and respond, reply response, finish to send separate identification and respond, and carry in the said separate identification response and reply the frame data message until the reception that receives said tested node transmission in the given time to said tested node.
9. method according to claim 8 is characterized in that, also comprises: do not receive the reception answer response that said tested node sends in the given time, send the signal warning information.
10. method according to claim 8; It is characterized in that said answer frame data message comprises: the handover number N of the frame data message that carries in the transmission number of times R of the answer frame data message that carries in said tested node address, handover number M, the said separate identification response and the said separate identification request.
11. the separate recognition device of line of electric force is applied to it is characterized in that in the power equipment, comprising:
Receiving element; Be used to receive the separate identification request that tested node sends; Send from tested node when the electric power signal that said separate identification request is transmitted on the line of electric force to self place in tested node detection is in zero crossing, and carry the frame data message in the said separate identification request;
Acquiring unit is used to obtain the time of reception that receives said separate identification request and the transmission time of said frame data message;
The computing recognition unit is used for said time of reception and said transmission time are carried out computing, according to operation result, discerns the separate of said tested node place line of electric force.
12. device according to claim 11 is characterized in that, after said receiving element specifically is used to receive tested node fixed interval delay time Δ T1, and the said separate identification request of transmission.
13. device according to claim 12 is characterized in that, said computing recognition unit; Specifically be used for % (T/2), said time of reception and said transmission time carried out computing, wherein according to formula Δ T=[(Δ T1+ Δ T4) – Δ T3x]; Δ T1+ Δ T4 is the transmission time, and Δ T4 is the transmitting time of separate identification request, and T is the cycle of said electric power signal; Δ T3x is a time of reception, and x representes the separate of line of electric force, Δ T3A=(Δ T1+ Δ T4) % (T/2); Δ T3B=(T/6+ Δ T1+ Δ T4) % (T/2), Δ T3C=(T/3+ Δ T1+ Δ T4) % (T/2); Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
14. device according to claim 12; It is characterized in that; After said receiving element specifically is used to receive tested node fixed interval delay time Δ T1; The said separate identification request of transmitting via via node again, wherein said via node is connected between said tested node and the receiving node.
15. device according to claim 14 is characterized in that, after said receiving element specifically is used to receive tested node fixed interval delay time Δ T1, again via the said separate identification request of transmitting behind the via node fixed interval delay time Δ T2.
16. device according to claim 15 is characterized in that, said computing recognition unit specifically is used for the % (T/2) according to formula Δ T=[(Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4) – Δ T3x]; Said time of reception and said transmission time are carried out computing, and wherein, Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4 is the transmission time; Δ T4 is the transmitting time of separate identification request, and N is a handover number, and the initial value that N can be set is N=0; When said separate identification request is transmitted through said via node; Said handover number N adds 1 back automatically and is transmitting, and T is the cycle of said electric power signal, and Δ T3x is a time of reception; X representes the separate of line of electric force; Δ T3A=[Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2), Δ T3B=[T/6+ Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2), Δ T3C=[T/3+ Δ T1+ (Δ T4+ Δ T2) * N+ Δ T4] % (T/2); Greater than-T/12, when being not more than T/12, that discerns said tested node place line of electric force separately is A phase line of electric force at said Δ T; Greater than T/12, when being not more than (T/12+T/6), discerning the separate of said tested node place line of electric force is B phase line of electric force at said Δ T; Greater than (T/12+T/6), when being not more than (T/12+T/3), discerning the separate of said tested node place line of electric force is C phase line of electric force at said Δ T.
17. device according to claim 11; It is characterized in that; Also comprise: transmitting element specifically is used to send separate identification and responds to said tested node, until receiving the reception answer response that said tested node sends in the given time; Finish to send separate identification response, and carry in the said separate identification response and reply the frame data message.
18. device according to claim 17 is characterized in that, also comprises: Alarm Unit, specifically be used for not receiving the reception answer response that said tested node sends in the given time, send the signal warning information.
19. device according to claim 17 is characterized in that, said answer frame data message comprises:
The handover number N of the frame data message that carries in the transmission number of times R of the answer frame data message that carries in said tested node address, handover number M, the said separate identification response and the said separate identification request.
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| CN201210284674.XA CN102768311B (en) | 2012-08-06 | 2012-08-06 | Method and device for recognizing phase of power line |
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| CN201210284674.XA CN102768311B (en) | 2012-08-06 | 2012-08-06 | Method and device for recognizing phase of power line |
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| CN102768311B (en) | 2014-10-29 |
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Denomination of invention: A power line phase identification method and device Effective date of registration: 20211023 Granted publication date: 20141029 Pledgee: Hangzhou United Rural Commercial Bank Co.,Ltd. Xixing sub branch Pledgor: INFOSTRONG (R) TECHNOLOGY CO.,LTD. Registration number: Y2021330002025 |