CN105182174A - Self-compensation pilot protection exchange synchronous controller based on standby channel - Google Patents
Self-compensation pilot protection exchange synchronous controller based on standby channel Download PDFInfo
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- CN105182174A CN105182174A CN201410275782.XA CN201410275782A CN105182174A CN 105182174 A CN105182174 A CN 105182174A CN 201410275782 A CN201410275782 A CN 201410275782A CN 105182174 A CN105182174 A CN 105182174A
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Abstract
The invention relates to a self-compensation pilot protection exchange synchronous controller based on a standby channel. The device employs a pilot protection standby channel as a communication means, time synchronization is achieved through practical time-delay of an actual measurement communication channel, accurate compensation is employed, only self clocks of protection testers at two sides are depended on, consistency of the clocks of the protection testers at two sides is not required, and absolute time or external clocks are not relied on. The technical problem is solved fundamentally that time synchronization at two sides is difficult when line pilot protection exchange is carried out. Protection exchange can be achieved before a circuit is put into operation, each experiment project can be completed and full experimental verification of synchronization performances of protection devices at two sides of a circuit is carried out. The situation the circuit is put into operation reliably and safely is ensured, circuit protection exchange time is shortened, and circuit starting time is saved. Thus the circuit can be put into operation early and economic benefits can be generated early. The provided synchronous controller can be widely used in pilot protection of a high voltage transmission line.
Description
Technical field
The present invention relates to the device that a kind of self-compensating formula pilot protection based on alternate channel exchanges synchro control, particularly HV line pilot protection exchanges the device of synchro control to a kind of self-compensating formula pilot protection based on alternate channel that timing uses.
Background technology
Ultra-high-tension power transmission line pilot protection (longitudinal differential, distance, zero sequence etc.) is before putting into operation, and both sides protective device must connect actual communication channel and exchange.This side protective device, offside protective device, communication channel coordinate suitable through exchanging checking three, and protective device is correct through exchanging checking action logic, and pilot protection can formally put into operation.When circuit physical fault; the protective device of circuit both sides is that (synchronously) measures fault simultaneously; but when exchanging test, how simulated failure occurs (synchronously) the protection test instrument of both sides simultaneously, it is the technical barrier that puzzlement pilot protection is exchanged always.
There are two kinds of solutions at present.Scheme 1: this side and offside individually simulated failure carry out some projects and exchange, and both sides stationary problem wouldn't be debugged.By the time during starting characteristics test, the department that runs changes system operation mode according to the concrete electric position of circuit, and arranges corresponding back-up protection, and when utilizing primary equipment to start charged, nuclear phase and phasor inspection carry out the synchronous of indirect verification both sides protective device.This scheme needs system to switch method of operation cooperation, adds the handling safety hidden danger of high pressure primary equipment; And this circuit needs the protection of system neighbouring device as this line backup protection; If both sides protective device synchronously has problem, the startup of the circuit that needs to stop to search process, time and effort consuming.Scheme 2: this side and offside protective device access gps antenna all respectively and receive gps signal, and both sides device is consistent with gps time respectively.Direct electric signal is not had to contact between this side and offside relay protection experimental instrument.Testing crew mutual cooperation and communication before each experimental project in both sides is good, arranges identical simulated failure type and the test parameters that is mutually related respectively, and after arriving the schedule time, both sides device exports fault amount simultaneously.This mode needs to set up gps antenna, relies on gps signal, also inconvenient for the test instrument be in factory building, is also subject to the factor impacts such as extreme weather, often abandons simultaneous test project because can not receive gps signal; And each project be both sides testing crew according to scheme determine → test parameters arranges unitarity and determines → arrange that test parameters → test period is arranged → started to test this mode and carries out.For multi-mode evolved fault, because be that both sides are arranged respectively, simulation is got up cumbersome, inefficiency, and it is not smooth that experiment is often carried out.Finally be forced to transfer to and take scheme 1 mode.
Based on above description, prior art Problems existing is that the precise synchronization of both sides protective device is difficult to realize.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is exactly how to provide a kind of isochronous controller, makes both sides protective device can realize precise synchronization under easy to operate prerequisite.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of self-compensating formula pilot protection based on alternate channel and exchanging isochronous controller, it is characterized in that, comprise casing, power insert, control plug-in unit, CPU card, man-machine plug-in unit, communication plug;
Wherein casing is made up of parts such as lower plate, upper plate, backboard and left and right plates; The first track of fixing pluge effect, the second track, the 3rd track, the 4th track, the 5th track has been had inside lower plate; The 6th track of fixing pluge effect, the 7th track, the 8th track, the 9th track, the tenth track has been had inside upper plate; There is the interconnective circuit of plug-in unit in backboard, inside backboard, have the first slot, the second slot, the 3rd slot, the 4th slot, the 5th slot that connect insert circuitry;
Power insert is fixed with the first track in casing, the 6th track respectively by lower and upper draw-in groove, and outside power insert backboard, plug is connected with the first slot in casing;
Control plug-in unit to be fixed with the second track in casing, the 7th track respectively by lower and upper draw-in groove, outside controlling plug-in unit backboard, plug is connected with the second slot in casing;
CPU card is fixed with the 3rd track in casing, the 8th track respectively by lower and upper draw-in groove, outside CPU card backboard, plug is connected with the 3rd slot in casing, is connected respectively by the circuit in the postnotum of casing with control plug-in unit, CPU card, man-machine plug-in unit, communication plug;
Man-machine plug-in unit is fixed with the 4th track in casing, the 9th track respectively by lower and upper draw-in groove, and outside man-machine plug-in unit backboard, plug is connected with the 4th slot in casing;
Communication plug is fixed with the 5th track in casing, the tenth track respectively by lower and upper draw-in groove, and outside communication plug backboard, plug is connected with the 5th slot in casing.
Preferably, provide DC supply to after described power insert changes the 220V AC power of input into low-voltage direct other each plug-in units.
Preferably, described control plug-in unit converts test dictation to after receiving the signal of CPU card, and is connected with protection test instrument by standard K EY interface.
Preferably, described man-machine plug-in unit arrange and show " master " of isochronous controller/" from " working method, " this address, side ", " offside address ", " make-up time ".
Preferably, described communication plug has transmitting-receiving ST light mouth, connects pilot protection alternate channel, and by pilot protection alternate channel and the communication of offside isochronous controller.
Preferably, described CPU card reads the parameters in man-machine plug-in unit, according to Selecting parameter working method;
Described CPU card sends out by communication plug the signal of target during band to offside, and accepts the signal of offside by communication plug;
The order of described CPU card starting protection test instrument sends by controlling plug-in unit.
The present invention also provides a kind of self-compensating formula pilot protection based on alternate channel to exchange isochronous controller and realizes exchanging the method for time synchronized, it is characterized in that, comprises the following steps:
Step one: " master " mode side is exchanged isochronous controller based on the self-compensating formula pilot protection of alternate channel and first sent a signal, " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and receive this signal, measure communication channel delay time Td thus; Main " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and shifts to an earlier date T
dtime to " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and sends instructions, instruction starts this side protection test instrument; T
dexchange isochronous controller to " master " mode side based on the self-compensating formula pilot protection of alternate channel again after time to send instructions, instruction starts this side protection test instrument;
Step 2: protection test instrument in both sides all to protective device input power frequency just profound signal wave current, reads this side electric current and offside current and phase difference δ ° at this side protective device, during delayed this side current phase of offside current phase, the make-up time is
during advanced this side current phase of offside current phase, the make-up time is
Step 3: by the man-machine interface input offset time, " master " mode side based on the self-compensating formula pilot protection of alternate channel exchange isochronous controller shift to an earlier date the Td+Tb time to " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and sends instructions, exchange isochronous controller to " master " mode side based on the self-compensating formula pilot protection of alternate channel again after the Td+Tb time to send instructions, just profound ripple is inputted to this side protective device after both sides protection test instrument receives instruction, this side electric current and offside current and phase difference is read at this side protective device, if phase place is not 0, continue to compensate by the compensation method of second step, phase place is 0, then both sides precise synchronization is described, just can start to have exchanged.
(3) beneficial effect
The invention discloses a kind of self-compensating formula pilot protection based on alternate channel and exchange isochronous controller.This device utilizes pilot protection alternate channel as means of communication; time synchronized by actual measurement communication channel actual time delay, and adopts fine compensation, only relies on both sides protection test instrument clock separately own; do not require that both sides test instrument clock is consistent, do not rely on absolute time or external clock.When fundamentally solving longitudinal differential protection system pair, both sides are difficult to synchronous technical matters.Protection can be realized exchange each experimental project and all complete, the net synchronization capability of abundant experimental verification circuit both sides protective device before circuit puts into operation, ensure that circuit is reliable and secure and put into operation, shorten route protection and exchange the time, save the line start time.Circuit is put into operation early, produces economic benefit early.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1: the self-compensating formula pilot protection based on alternate channel provided by the invention exchanges the anatomical connectivity schematic diagram of isochronous controller;
Fig. 2: the self-compensating formula pilot protection based on alternate channel provided of the present invention exchanges the structural representation of the casing of isochronous controller;
In figure: 1, casing; 2, power insert; 3, plug-in unit is controlled; 4, CPU card; 5, man-machine plug-in unit; 6, communication plug; 7, lower plate; 8, upper plate; 9, backboard; 10, the first track; 11, the second track; 12, the 3rd track; 13, the 4th track; 14, the 5th track; 15, the 6th track; 16, the 7th track; 17, the 8th track; 18, the 9th track; 19, the tenth track; 20, the first slot; 21, the second slot; 22, the 3rd slot; 23, the 4th slot; 24, the 5th slot.
Embodiment
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
As shown in Figure 1, the self-compensating formula pilot protection based on mobile communication of the present embodiment exchanges isochronous controller, comprises casing 1, power insert 2, controls plug-in unit 3, CPU card 4, man-machine plug-in unit 5, communication plug 6.
Casing 1 is made up of parts such as lower plate 7, upper plate 8, backboard 9 and left and right plates.The first track 10, second track 11, the 3rd track 12, the 4th track 13, the 5th track 14 of fixing pluge effect has been had inside lower plate 7; The 6th track 15 of fixing pluge effect, the 7th track 16, the 8th track 17, the 9th track 18, the tenth track 19 has been had inside upper plate 8; There is the interconnective circuit of plug-in unit in backboard 9, inside backboard 9, have the first slot 20, second slot 21, the 3rd slot 22, the 4th slot 23, the 5th slot 24 that connect insert circuitry.
Power insert 2 is fixed with the first track 10 in casing 1, the 6th track 15 respectively by lower and upper draw-in groove, and outside power insert 2 backboard, plug is connected with the first slot 20 in casing 1.Control plug-in unit 3 to be fixed with the second track 11 in casing 1, the 7th track 16 respectively by lower and upper draw-in groove, outside controlling plug-in unit 3 backboard, plug is connected with the second slot 21 in casing 1.CPU card 4 is fixed with the 3rd track 12 in casing 1, the 8th track 17 respectively by lower and upper draw-in groove, and outside CPU card 4 backboard, plug is connected with the 3rd slot 22 in casing 1.Man-machine plug-in unit 5 is fixed with the 4th track 13 in casing 1, the 9th track 18 respectively by lower and upper draw-in groove, and outside man-machine plug-in unit 5 backboard, plug is connected with the 4th slot 23 in casing 1.Communication plug 6 is fixed with the 5th track 14 in casing 1, the tenth track 19 respectively by lower and upper draw-in groove, and outside communication plug 6 backboard, plug is connected with the 5th slot 24 in casing 1.
Power insert 2 can change low-voltage direct into the 220V AC power of input, provides DC supply to other each plug-in units by the circuit in the postnotum of casing 1.
Control plug-in unit 3 to be connected with CPU card 4 by the circuit in the postnotum of casing 1, control plug-in unit 3 can receive the signal of CPU card 4 after and convert test dictation to and be connected with protection test instrument by standard K EY interface.
Man-machine plug-in unit 5 is connected with CPU card 4 by the circuit in the postnotum of casing 1, can arrange and show isochronous controller " master "/" from " working method, the parameter such as " this address, side ", " offside address ", " make-up time ".Circuit is to timing, and circuit both sides respectively establish a stylobate to exchange isochronous controller in the self-compensating formula pilot protection of mobile communication, control the protection test instrument of this side respectively.Self-compensating formula pilot protection based on mobile communication exchange synchronizer work time this side be set to " master " working method, then offside be set to " from " working method, or this side be set to " from " working method, working method that offside is set to " master ".
Communication plug 6 is connected with CPU card 4 by the circuit in the postnotum of casing 1, and communication plug 6 has transmitting-receiving ST light mouth, can connect pilot protection alternate channel, and can pass through pilot protection alternate channel and the communication of offside isochronous controller.
CPU card 4 is connected with control plug-in unit 3, CPU card 4, man-machine plug-in unit 5, communication plug 6 respectively by the circuit in the postnotum of casing 1.CPU card 4 can read the parameters in man-machine plug-in unit 5, according to Selecting parameter working method.CPU card 4 can send out by communication plug 6 signal of target during band to offside, and accepts the signal of offside by communication plug 6.The order of CPU card 4 starting protection test instrument sends by controlling plug-in unit 3.Time synchronized mainly realizes in CPU card 4.
CPU card 4 is divided into three process implementations to exchange time synchronized.
The first step; the actual measurement of communication channel delay time; " master " mode side is exchanged isochronous controller based on the self-compensating formula pilot protection of mobile communication and is first sent a signal, and that exchanges isochronous controller clock timing with " master " mode side based on the self-compensating formula pilot protection of mobile communication sends the moment for T
bf, the time of reception is T
bs, " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of mobile communication and receives this signal, with " from " mode side exchange isochronous controller clock timing based on the self-compensating formula pilot protection of mobile communication send the moment for T
df, the time of reception is T
ds, then communication channel delay is:
" master " mode side is exchanged isochronous controller based on the self-compensating formula pilot protection of mobile communication and is shifted to an earlier date T
dtime to " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of mobile communication and sends out test dictation, test dictation starts the test of this side protection test instrument.T
dexchange isochronous controller to " master " mode side based on the self-compensating formula pilot protection of mobile communication again after time and send out test dictation, test dictation starts the test of this side protection test instrument.Just can ensure that both sides start test substantially simultaneously.
Second step; make-up time, above-mentioned start to test time both sides protection test instrument all to the just profound signal wave current of protective device input power frequency, read this side electric current and offside current and phase difference δ ° at this side protective device; then during delayed this side current phase of offside current phase, the make-up time is
during advanced this side current phase of offside current phase, the make-up time is
3rd step, precise synchronization, by the man-machine interface input offset time, " master " mode side is exchanged isochronous controller based on the self-compensating formula pilot protection of mobile communication and is shifted to an earlier date T
d+ T
btime to " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of mobile communication and sends out test dictation, T
d+ T
bexchange isochronous controller to " master " mode side based on the self-compensating formula pilot protection of mobile communication again after time and send out test dictation; just profound ripple is inputted to this side protective device after both sides test instrument receives test dictation; this side electric current and offside current and phase difference is read at this side protective device; if phase place is not 0; continue to compensate by the compensation method of second step; phase place is 0, then both sides precise synchronization is described.Just can start to have exchanged.
Above embodiment is only for illustration of the present invention, but not limitation of the present invention.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, various combination, amendment or equivalent replacement are carried out to technical scheme of the present invention, do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (7)
1. exchange isochronous controller based on the self-compensating formula pilot protection of alternate channel for one kind, it is characterized in that, comprise casing (1), power insert (2), control plug-in unit (3), CPU card (4), man-machine plug-in unit (5), communication plug (6);
Wherein casing (1) comprises lower plate (7), upper plate (8), backboard (9) and left and right plate; There have been the first track (10), the second track (11), the 3rd track (12), the 4th track (13), the 5th track (14) of fixing pluge effect in lower plate (7) inner side; There have been the 6th track (15), the 7th track (16), the 8th track (17), the 9th track (18), the tenth track (19) of fixing pluge effect in upper plate (8) inner side; Have the interconnective circuit of plug-in unit in backboard (9), there are the first slot (20), the second slot (21), the 3rd slot (22), the 4th slot (23), the 5th slot (24) that connect insert circuitry in backboard (9) inner side;
Power insert (2) is fixed with the first track (10) in casing (1), the 6th track (15) respectively by lower and upper draw-in groove, and outside power insert (2) backboard, plug is connected with the first slot (20) in casing (1);
Control plug-in unit (3) to be fixed with the track (11) in casing (1), the 7th track (16) respectively by lower and upper draw-in groove, outside controlling plug-in unit (3) backboard, plug is connected with the second slot (21) in casing (1);
CPU card (4) is fixed with the 3rd track (12) in casing (1), the 8th track (17) respectively by lower and upper draw-in groove, outside CPU card (4) backboard, plug is connected with the 3rd slot (22) in casing (1), is connected respectively by the circuit in the postnotum of casing (1) with control plug-in unit (3), CPU card (4), man-machine plug-in unit (5), communication plug (6);
Man-machine plug-in unit (5) is fixed with the 4th track (13) in casing (1), the 9th track (18) respectively by lower and upper draw-in groove, and outside man-machine plug-in unit (5) backboard, plug is connected with the 4th slot (23) in casing (1);
Communication plug (6) is fixed with the 5th track (14) in casing (1), the tenth track (19) respectively by lower and upper draw-in groove, and outside communication plug (6) backboard, plug is connected with the 5th slot (24) in casing (1).
2. the self-compensating formula pilot protection based on alternate channel according to claim 1 exchanges isochronous controller; it is characterized in that, provide DC supply to after described power insert (2) changes the 220V AC power of input into low-voltage direct other each plug-in units.
3. the self-compensating formula pilot protection based on alternate channel according to claim 1 exchanges isochronous controller; it is characterized in that; after described control plug-in unit (3) receives the signal of CPU card (4); convert test dictation to, and be connected with protection test instrument by standard K EY interface.
4. the self-compensating formula pilot protection based on alternate channel according to claim 1 exchanges isochronous controller; it is characterized in that; described man-machine plug-in unit (5) arrange and show " master " of isochronous controller/" from " working method, " this address, side ", " offside address ", " make-up time ".
5. the self-compensating formula pilot protection based on alternate channel according to claim 1 exchanges isochronous controller; it is characterized in that; described communication plug (6) has transmitting-receiving ST light mouth; connect pilot protection alternate channel, and by pilot protection alternate channel and the communication of offside isochronous controller.
6. the self-compensating formula pilot protection based on alternate channel according to claim 1 exchanges isochronous controller, it is characterized in that, described CPU card (4) reads the parameters in man-machine plug-in unit (5), according to Selecting parameter working method;
Described CPU card (4) sends out by communication plug (6) signal of target during band to offside, and accepts the signal of offside by communication plug (6);
The order of described CPU card (4) starting protection test instrument sends by controlling plug-in unit (3).
7. the self-compensating formula pilot protection based on alternate channel as claimed in any of claims 1 to 6 exchanges the method that isochronous controller realizes exchanging time synchronized, it is characterized in that, comprises the following steps:
Step one: " master " mode side is exchanged isochronous controller based on the self-compensating formula pilot protection of alternate channel and first sent a signal, " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and receive this signal, measure communication channel delay time Td thus; Main " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and shifts to an earlier date T
dtime to " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and sends instructions, instruction starts this side protection test instrument; T
dexchange isochronous controller to " master " mode side based on the self-compensating formula pilot protection of alternate channel again after time to send instructions, instruction starts this side protection test instrument;
Step 2: protection test instrument in both sides all to protective device input power frequency just profound signal wave current, reads this side electric current and offside current and phase difference δ ° at this side protective device, during delayed this side current phase of offside current phase, the make-up time is
during advanced this side current phase of offside current phase, the make-up time is
Step 3: by the man-machine interface input offset time, " master " mode side based on the self-compensating formula pilot protection of alternate channel exchange isochronous controller shift to an earlier date the Td+Tb time to " from " mode side exchanges isochronous controller based on the self-compensating formula pilot protection of alternate channel and sends instructions, exchange isochronous controller to " master " mode side based on the self-compensating formula pilot protection of alternate channel again after the Td+Tb time to send instructions, just profound ripple is inputted to this side protective device after both sides protection test instrument receives instruction, this side electric current and offside current and phase difference is read at this side protective device, if phase place is not 0, continue to compensate by the compensation method of second step, phase place is 0, then both sides precise synchronization is described, just can start to have exchanged.
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| CN201410275782.XA CN105182174B (en) | 2014-06-19 | 2014-06-19 | Self-compensating formula pilot protection based on alternate channel exchanges isochronous controller |
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| CN105182174B CN105182174B (en) | 2018-03-06 |
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| Publication number | Publication date |
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| CN105182174B (en) | 2018-03-06 |
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