CN201282358Y - Standby power supply self-casting device based on optical fibre communication - Google Patents
Standby power supply self-casting device based on optical fibre communication Download PDFInfo
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- CN201282358Y CN201282358Y CNU2008201667277U CN200820166727U CN201282358Y CN 201282358 Y CN201282358 Y CN 201282358Y CN U2008201667277 U CNU2008201667277 U CN U2008201667277U CN 200820166727 U CN200820166727 U CN 200820166727U CN 201282358 Y CN201282358 Y CN 201282358Y
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- electric substation
- power supply
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Abstract
The utility model discloses a stand-by power supply automatic-switching device based on optical fiber communication, which is characterized in that the bus bar of a substation A is connected with the bus bar of a substation B through a circuit 3, the substation A is provided with an out-of-step splitting device, the substation B is provided with the automatic switching device for the stand-by power supply, CPU plug-in units of the out-of-step splitting device and the automatic switching device are provided with communication interfaces, wherein, the CPU plug-in units of the automatic switching device completes the processes of data read-out, filtering, data reception, data synchronization, fault diagnosis and trip outlet logics; the communication interfaces are connected with communication equipment which consists of a PCM and multiplex interface equipment; and the communication equipment is connected with each other through optical-fiber cables. The utility model effectively improve reliable power supply to the two substations by the prior three circuits, and solves the problems of possible mis-operation of automatic switching modes of the circuits and protracted recovery of power supply.
Description
Technical field
The utility model relates to the Power System Automation Equipment field, relates in particular between the electric substation standby mutually between two transmission lines (two power supplys).
Background technology
In the electric network wiring scheme of the reliable power supply of single as shown in Figure 1 electric substation, circuit 4 11, circuit 26 connect second electric substation 2, automatic switching device of standby power supply 9 is installed on the 110kV of second electric substation bus, and circuit 4 11, circuit 26 are realized standby mutually, and four kinds of different operational modes can be arranged.
Operational mode one: circuit 4 11 operations, circuit 26 stand-by heats, 4DL, 9DL switch close the position, the 5DL switch divides the position, and the 110kV bus ABC three-phase of second electric substation 2 has the Ux5 of pressure, circuit 26 that pressure is arranged, and device is finished charging through 15S; Do not have pressure as 110kV I section bus, circuit 4 11 does not have stream, and 110kV II section bus has pressure, and the automatic switching device of standby power supply action is through the time-delay tripping 4DL switch of adjusting, and the 5DL switch closes after the affirmation tripping;
Operational mode two: circuit 26 operations, circuit 4 11 stand-by heats, 5DL, 9DL switch close the position, the 4DL switch divides the position, and the 110kV bus ABC three-phase of second electric substation 2 has the Ux4 of pressure, circuit 4 11 that pressure is arranged, and device is finished charging through 15S; Do not have pressure as 110kV II section bus, circuit 26 does not have stream, and 110kV I section bus has pressure, and the automatic switching device of standby power supply action is through the time-delay tripping 5DL switch of adjusting, and the 4DL switch closes after the tripping of affirmation switch.
Operational mode three, four: circuit 4 11, circuit 26 fanout operations, 4DL, 5DL switch close the position, mother stock switch 9DL divides the position, and the 110kV I of second electric substation 2, II section bus ABC three-phase have pressure, and device is finished charging through 15S; Do not have pressure as 110kV I section bus, circuit 4 11 does not have stream, and 110kV II section bus has pressure, and the automatic switching device of standby power supply action is through the time-delay tripping 4DL switch of adjusting, and the 5DL switch closes after the affirmation tripping; Do not have pressure as 110kV II section bus, circuit 26 does not have stream, and 110kV I section bus has pressure, and the automatic switching device of standby power supply action is through the time-delay tripping 5DL switch of adjusting, and the 4DL switch closes after the tripping of affirmation switch.
Therefore, need two loop line roads to utilize automatic switching device of standby power supply 9 could realize reliable power supply to an electric substation.
Because the needs of load growth as if near newly-built electric substation's first 1 circuit 4 11, by above-mentioned conventional principles configuration automatic switching device of standby power supply, need newly-built circuit 1, circuit 5 12 could guarantee the reliable power supply to first electric substation 1.As shown in Figure 2, a cover automatic switching device of standby power supply 8 is installed on the 110kV of first electric substation 1 bus, principle of device can be realized the reliable power supply of circuit 1,5 12 pairs of electric substation's first 1 of circuit with second electric substation 2.
Therefore, first electric substation 1, second electric substation 2 need four loop line roads could realize the reliable power supply of two electric substations respectively, and shortcoming is to need newly-built two loop line roads, and investment is big, construction period is long, circuit corridor floor space increases.
If the circuit among Fig. 14 11 cut-off ring go into newly-built electric substation's first but adopt, and newly-built switch 2DL, 3DL, forms partial electric grid shown in Figure 3, promptly utilize three loop line roads that first electric substation 1, second electric substation 2 are powered.In order to satisfy the needs of different running method; power to second electric substation 2, first electric substation 1 to first electric substation 1,2 power supplies of second electric substation or 220kV fourth electric substation 4 as 220kV third electric substation 3; need at circuit 37 both sides layout line line protection devices, and adopt the automatic switching device of standby power supply of following principle to realize first electric substation 1, second electric substation 2 are powered comparatively reliably.
First kind of technical scheme is:
110kV automatic switching device of standby power supply 9 is installed by second electric substation, 110kV decompression disconnection device 8 is installed by first electric substation.As Fig. 3, automatic switching device of standby power supply inserts the 110kV bus ABC three-phase voltage of second electric substation 2, the line voltage distribution Ux4 of circuit 37, circuit 26 electric current I 5, and the position contact TWJ of switch 4DL, 5DL, switch 5DL close position, back KKJ contact.Normal operating mode, the 110kV bus ABC three-phase of second electric substation 2 has pressure, line voltage distribution Ux4 that pressure is arranged, and switch 5DL closes a TWJ=0,4DL and divides position TWJ=1, and automatic switching device of standby power supply was finished charging through 15 seconds.Decompression disconnection device 8 inserts the 110kV bus ABC three-phase voltage of first electric substation 1, circuit one 5 electric current I 2.
Circuit 26 permanent faults; fourth electric substation 4 circuits, 26 protection would trips, coincidence, post acceleration are moved; 6DL switch tripping; the 110kV bus ABC three-phase of second electric substation 2 does not have pressure; circuit two electric current I 5 do not have stream, and device is jumped the 5DL switch through the deferred action of adjusting after the affirmation tripping; the 4DL switch that closes, realize that first electric substation 1 is by the power supply (be called for short bus haul oneself willingly into mode) of circuit 37 to second electric substation 2.
Circuit one 5 permanent faults, third electric substation, 3 circuits, one protection would trip, coincidence, post acceleration action, the tripping of 1DL switch, the 110kV bus ABC three-phase pressure loss of first electric substation 1, decompression disconnection device 8 is through the deferred action tripping 2DL switch of adjusting.Circuit 37 voltage U x4 decompressions simultaneously, second electric substation 2 automatic switching device of standby power supply 9 are through the deferred action of the adjusting 4DL switch that closes, realize second electric substation 2 by circuit 37 to 1 power supply of first electric substation (the abbreviation circuit is hauled oneself willingly into mode).
The another kind of scheme of prior art is:
The 110kV automatic switching device of standby power supply is installed by second electric substation 2, only hauls oneself willingly into mode with bus, abandons circuit and hauls oneself willingly into mode.
Below the defective of existing two kinds of technical schemes is analyzed
1, circuit is hauled oneself willingly into the malfunction of mode possibility
Because the circuit of automatic switching device of standby power supply 9 is hauled oneself willingly into mode and only identified circuit 37 single-phase voltage Ux4, therefore no matter which kind of reason causes the Ux4 loss of voltage, and device all actively closes a floodgate, and below several situations is analyzed.
1.1, during circuit 37 permanent faults
Circuit 37 permanent faults; first electric substation 1 circuit, 37 protection would trips, coincidence, post acceleration tripping operation; .3DL switch tripping; the Ux4 line voltage distribution disappears; the automatic switching device of standby power supply 9 of second electric substation 2 is through the setting time action 4DL switch that closes; the acceleration protection that closes a floodgate immediately action tripping 4DL switch, the fault point of 4 pairs of circuits 37 of 220kV fourth electric substation forms again to be impacted.
1.2, during line voltage distribution Ux4 secondary circuit failure
Line voltage distribution Ux4 secondary circuit failure sky is opened tripping, and the Ux4 line voltage distribution disappears, and second electric substation 2 automatic switching device of standby power supply, the 9 actions 4DL switch that closes causes 220kV third electric substation 3, fourth electric substation 4 by circuit 1, circuit 26, circuit 37 cyclizations operation.If 220kV third electric substation 3, fourth electric substation 4 belong to the district that supplies of two 500kV electric substations, may produce bigger cyclization electric current, influence system safety stable operation.
1.3, when circuit one 5 permanent faults and switch 2DL tripping
Circuit one 5 permanent faults; third electric substation, 3 circuits, one 5 protection would trips, coincidence, post acceleration tripping operation; the tripping of 1DL switch; the 110kV bus ABC three-phase pressure loss of first electric substation 1; the 2DL switch is jumped in 8 actions of decompression disconnection device; but 2DL switch tripping; because line voltage distribution Ux4 decompression; second electric substation 2 automatic switching device of standby power supply 9 are through the deferred action of the adjusting 4DL switch that closes; the acceleration protection that closes a floodgate immediately action tripping 4DL switch, the fault point of 4 pairs of circuits 1 of 220kV fourth electric substation forms again to be impacted.
2, circuit is hauled oneself willingly into the mode overlong time that restores electricity
In order to ensure correct operation, before automatic switching device of standby power supply 9 actions are closed a floodgate, necessary reliable isolated fault point, promptly decompression disconnection device 8 setting times must be hauled oneself willingly into the mode setting time less than the circuit of automatic switching device of standby power supply 9.Both all adopt complete timing mode, i.e. device startup picks up counting, if timing not ends with system has recovered normal, the timer automatic clear, wait for that operation condition satisfies once more and restart timing, repeatedly start the accumulation timing and misoperation to avoid repeatedly transient fault, to wait in the time period that overlaps, to install.
110kV route protection time fixed value adjusting principle: sensitive segment protect 0.3S operate time or 0.6S, terminal protection setting time 2.9S, reclosure time 1.5S, post acceleration time 0.2S.Consider extreme case, line fault is by end protection action excision, if circuit one 5 permanent faults, the tripping operation of protection step switch, coincidence, post acceleration tripping operation, fault clearing time is 4.6S (2.9+1.5+0.2=4.6S).Circuit one 5 three-phase permanent faults, the 110kV bus ABC three-phase pressure loss of instant of failure first electric substation 1, decompression disconnection device 8 starts timing.Misoperation when preventing circuit one 5 transient faults, device tripping operation setting time must be greater than 4.6S, and consider certain nargin time, and generally adjusting is 5S or more longer time.As shown in Figure 4, decompression disconnection device 8 would trips of first electric substation 1 during 5S.
A phase permanent fault takes place in circuit 1,4.6S 1DL switch tripping constantly, and the 110kV bus ABC three-phase pressure loss of first electric substation 1, decompression disconnection device 8 starts timing through the 5S would trip, real time accumulation 9.6S (4.6+5=9.6S); The decompression state takes place constantly to be in from fault in circuit 37 voltage U x4 always simultaneously, haul oneself willingly into the mode success for guaranteeing circuit, second electric substation 2 automatic switching device of standby power supply, 9 closing times must be greater than 9.6S, and leave certain nargin time, generally get 10S, as shown in Figure 5, the decompression disconnection device moves prior to automatic switching device of standby power supply 0.4S.
When B, C phase earth fault or BC phase-to phase fault take place circuit 1,4.6S 1DL switch tripping constantly, the 110kV bus ABC three-phase pressure loss of first electric substation 1, circuit 37 voltage U x4 disappear, decompression disconnection device 8, automatic switching device of standby power supply 9 pick up counting synchronously, decompression disconnection device action tripping 2DL switch behind the 5S, the automatic switching device of standby power supply 4DL switch that closes promptly closes a floodgate when back 14.6S takes place fault behind the 10S, as shown in Figure 6, the decompression disconnection device moves prior to automatic switching device of standby power supply 5S.During the three-phase permanent fault, as shown in Figure 4, the decompression disconnection device moves prior to automatic switching device of standby power supply 5S.
In sum, the decompression disconnection device is 5S for the setting time that matches with route protection, considers that different fault type decompression disconnection devices the longest operate times is 9.6S; The automatic switching device of standby power supply circuit is hauled oneself willingly into mode in order to cooperate with the decompression disconnection device, and the closing time of adjusting is 10S, considers that the longest action closing time of different faults type is 14.6S, and the overlong time that restores electricity influences power supply reliability.
And second kind of scheme only hauled oneself willingly into mode with bus, abandons circuit and hauls oneself willingly into mode, and first electric substation loses stand-by power supply, causes full institute decompression under the accident conditions, and power supply reliability reduces.
The utility model content
Technical problem to be solved in the utility model is exactly effectively to improve the reliable powerup issue of three loop line roads to two electric substations, solves circuit and hauls oneself willingly into the malfunction that mode may exist and the problem of the overlong time that restores electricity.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of automatic switching device of standby power supply based on optical fiber communication, the bus of electric substation's first 1 joins by the bus of circuit 37 and electric substation's second 2, first electric substation 1 is equipped with decompression disconnection device 8, second electric substation 2 is equipped with automatic switching device of standby power supply 9, it is characterized in that: as Figure 11, the CPU card of described decompression disconnection device 8 and automatic switching device of standby power supply 9 all is provided with communication interface 13, wherein the automatic switching device of standby power supply CPU card is finished sampled data and is read, filtering, Data Receiving, data sync, fault judgement, the tripping operation outlet logic, described communication interface connects communication equipments such as multiple connection interface equipment and PCM, first electric substation 1, connect by optical cable 10 between the PCM equipment of second electric substation 2.
Preferably, described communication interface 13 has built-in photoelectricity translation interface, finishes the conversion of the signal of telecommunication to light signal.
Further, the bus of described electric substation first 1 joins by the bus of circuit 1 and electric substation the third 3, the bus of described electric substation second 2 joins by the bus of circuit 26 and electric substation's fourth 4, establish switch 1DL and switch 2DL on the circuit 1, establish switch 5DL and switch 6DL on the circuit 26, circuit 37 connects the bus of electric substation's first 1 and the bus of electric substation's second 2, and establishes switch 3DL and switch 4DL thereon.
The utility model is owing to adopted technique scheme, Fibre Optical Communication Technology is introduced the electric power system automatic switching device of standby power supply, utilize optical fiber communication that circuit both sides busbar voltage, line current are compared, realize the cooperation far away of automatic switching device of standby power supply, inner two power supplys of electric substation mutual standby extended to the standby mutually of two power supplys between the electric substation, remedy the electric power netting safe running defective that grid structure imperfection causes.In conjunction with Figure 10, its beneficial effect is analyzed as follows:
1, circuit 37 permanent faults or Ux4 secondary circuit failure cause line voltage distribution to disappear, and automatic switching device of standby power supply 9 all can not close a floodgate in misoperation.
2, it is unsuccessful that the 2DL switches are jumped in decompression disconnection device 8 action, can not move the 4DL switch that closes before the isolation not yet in effect of fault point.
3, shortening restores electricity the time, behind the circuit one 5 fault 1DL switch trips, automatic switching device of standby power supply 9, decompression disconnection device 8 pick up counting synchronously, as the decompression disconnection device 5S that adjusts, automatic switching device of standby power supply only need leave a nargin time, the 6S that generally adjusts can satisfy the operation needs, and 6S restores electricity when showing three-phase symmetry permanent fault as Fig. 7, and 10.6S restores electricity when showing unbalanced fault as Fig. 8.
4, insert switch 2DL and close back position contact KKJ, in the time of can preventing first electric substation 1 hand branch or distant minute 2DL switch, automatic switching device of standby power supply 9 false switchings of second electric substation 2.
5, the principle 110kV bus ABC three-phase simultaneously during decompression that requires first electric substation 1, second electric substation 2, device time-delay 15S discharge can prevent first electric substation 1, second electric substation 2 instantaneous loss of pressure discharge simultaneously, tripping when causing moving.Nearer as first electric substation 1, second electric substation 2 from same power supply point wiring or electrical distance, when 110kV circuit one 5 three-phase faults, the 110kV bus ABC three-phase voltage of first electric substation 1 disappears, and the 110kV bus ABC three-phase voltage of second electric substation 2, third electric substation 3, fourth electric substation 4 is the fault residual voltage; Behind the 1DL switch trip, the 110kV bus ABC three-phase voltage of first electric substation 1 disappears, other substation busbars voltages revert to rated voltage, and device possesses operation condition, and the 2DL switch is jumped in deferred action through adjusting, confirm the 4DL switch that closes after the tripping, carry out 1 power supply of 2 pairs of first electric substations of second electric substation.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is the reliable power supply grid winding diagram of single electric substation;
The former schematic diagram of the reliable power supply grid wiring of Fig. 2 two electric substations;
The new schematic diagram of Fig. 3 two electric substations power supply grid wiring;
Device action schematic diagram when Fig. 4 is three-phase shortcircuit;
Device action schematic diagram when Fig. 5 is the A phase fault;
Device action schematic diagram when Fig. 6 is non-A phase fault;
Fig. 7 improves back symmetric fault device action schematic diagram for principle;
Fig. 8 improves back unbalanced fault device action schematic diagram for principle;
Fig. 9 improves the logic schematic diagram of back automatic switching device of standby power supply for principle;
Figure 10 is the transmission line structure figure between the electric substation behind use the utility model;
Multiplex channel mode connection layout when Figure 11 is 64k for transmission rate;
Embodiment
As shown in figure 10, the bus of electric substation the third 3 joins by the bus of circuit 1 and electric substation's first 1, the bus of electric substation's first 1 joins by the bus of circuit 37 and electric substation's second 2, the bus of electric substation's second 2 joins by the bus of circuit 26 and electric substation's fourth 4, circuit 1 picks out end at the bus of electric substation the third 3 and establishes a switch 1DL, establish a switch 2DL at the bus incoming end of electric substation's first 1, circuit 26 picks out end at the bus of electric substation's fourth 4 and establishes a switch 6DL, establish a switch 5DL at the bus incoming end of electric substation's second 2, circuit 37 picks out end at the bus of electric substation's first 1 and establishes a switch 3DL, establish a switch 4DL at the bus incoming end of electric substation's second 2, electric substation's first 1 is equipped with decompression disconnection device 8, electric substation's second 2 is equipped with automatic switching device of standby power supply 9, connects by optical cable 10 between first electric substation 1 and the second electric substation 2.As shown in figure 11, the CPU card of described decompression disconnection device 8 and automatic switching device of standby power supply 9 all is provided with communication interface 13.When transmission rate was 64k, described communication interface 13 was connected with the multiple connection interface equipment by optical fiber 12, and the multiple connection interface equipment connects PCM equipment by connection 14, connected by optical cable 10 between first electric substation 1, the second electric substation 2.
Described communication interface has built-in photoelectricity translation interface, sends after the converting electrical signal that protective device is sent becomes light signal, and becomes the signal of telecommunication to collect mail the converting optical signals of accepting, and the device backboard is provided with optical fiber and patches end, for the sending and receiving optical fiber interface.As Figure 11, the converting optical signals that the built-in photoelectricity translation interface of this side device is sended over according to the multiple connection interface equipment of pertinent regulations first electric substation 1 decompression disconnection device become corresponding numeric data code type and interface level, regularly add breakdown point after, be connected with the data terminal of PCM equipment through shielding connection 14, send to second electric substation 2 by optical cable 10.After the PCM equipment of second electric substation 2 sides receives the signal of first electric substation 1 transmission, the collection of letters lead-out terminal of PCM equipment inserts the multiple connection interface equipment through the shielding connection, after sign indicating number/type conversion, electricity/light conversion, go up the optical fiber plug terminal, be connected with the collection of letters optical fiber of automatic switching device of standby power supply.Wherein multiple connection interface equipment, PCM are the communication apparatus that electric substation has moved, and the present invention realizes resource-sharing by introducing them.
Conventional automatic switching device of standby power supply, decompression disconnection device are formed by AC plug-in unit, CPU card, DC plug-in unit, OUT plug-in unit.Wherein the AC plug-in unit is finished the input of analog quantitys such as voltage, electric current, behind the isolation transformer isolated variable, by low pass filter input A-D converter; CPU card is handled the back with sampled digital and is formed various protection relays, and calculates various remote measurement amounts; The DC plug-in unit is finished direct current 220V or the input of 110V voltage and is converted to protection required 5V, 12V, 24V voltage and the input collection of finishing switching value; The OUT plug-in unit is finished the output (trip, post a letter etc.) of switching value.
After adopting this invention, increase the communication interface function in above-mentioned CPU card, the CPU card of decompression disconnection device finishes that sampled data reads, filtering, and data send, data sync, fault judgement, tripping operation outlet logic; The CPU card of automatic switching device of standby power supply finishes that sampled data reads, filtering, Data Receiving, data sync, fault judgement, tripping operation outlet logic; The CPU card of automatic switching device of standby power supply finishes that sampled data reads, filtering, and data are accepted, data sync, fault judgement, tripping operation outlet logic; The CPU card of automatic switching device of standby power supply finishes that sampled data reads, filtering, Data Receiving, data sync, fault judgement, tripping operation outlet logic.Communication interface adopts built-in photoelectricity translation interface, does not need external any photoelectric conversion device can independently finish " light ← → " transfer process, finishes the photoelectricity physical interface function with optical fiber.Certainly also need the electrical network unified clock, guarantee decompression disconnection device and automatic switching device of standby power supply clock synchronization, could guarantee the data sync of both sides transmission.
As the logic schematic diagram of Fig. 9 for automatic switching device of standby power supply after improving, decompression disconnection device 8 after optical fiber interface is finished electricity/light conversion, is transferred to the optical fiber interface of automatic switching device of standby power supply with the analog quantity (three-phase voltage of 110kV bus, circuit one electric current I 2) of this side electric substation 1, switching value information (2DL position of the switch TWJ, hand close position contact KKJ) by optical-fibre channel.Three-phase voltage, circuit two electric current I 5, the position contact TWJ of switch 5DL, the hand of automatic switching device of standby power supply 9 access second electric substations 2 buses closes the position contact TWJ of position contact KKJ, switch 4DL.Automatic switching device of standby power supply 9 compares analog quantity, the switching value that the analog quantity (bus three-phase voltage, circuit two electric current I 5) of this side second electric substation 2, switching value information (5DL position of the switch TWJ, close back position contact KKJ) and decompression disconnection device 8 are transmitted through the fiber to this side, whether move with definite, how to move.
During normal the operation, first, second electric substation load is sent in circuit one, two operations respectively, and circuit three is by the charging of first electric substation, second electric substation side opening.
Mode one: bus is hauled oneself willingly into
Charge condition: switch 2DL, 5DL close the position, and switch 4DL stand-by heat, the 110kV of first electric substation bus three-phase have pressure, the 110kV of second electric substation bus three-phase that pressure is arranged, and device is finished charging through 15S.
Course of action: the 110kV bus ABC three-phase of second electric substation 2 does not have pressure, circuit 26 electric current I 5 do not have stream, the 110kV bus ABC three-phase of first electric substation 1 has pressure, device starts through Tb1 delay tripping relay 1TJ action and broadening 200ms jumps the 5DL switch, enabling signal relay XJT sends out trip signal simultaneously, confirm the switch tripping, close the 4DL switch through 3HJ action of Tb3 time-delay closing relay and broadening 200ms, enabling signal relay XJH sends out switching signal simultaneously.
Discharging condition: 4DL closes; Hand is jumped 2DL or 5DL (KKJ2 or KKJ5=0); Other outside block signals; 2DL, the TWJ of 4DL or 5DL is unusual, and device closes a floodgate and exports the back discharge; First and second electric substation's equal three-phases of 110kV bus do not have pressure, time-delay 15S discharge.
Mode two: circuit is hauled oneself willingly into
Charge condition: switch 2DL, 5DL close the position, and switch 4DL stand-by heat, the 110kV bus ABC three-phase of first electric substation 1 have the 110kV bus ABC three-phase of pressure, second electric substation 2 that pressure is arranged, and device is finished charging through 15S.
Course of action: the 110kV bus ABC three-phase of first electric substation 1 does not have pressure, circuit one 5 electric current I 2 do not have stream, the 110kV bus ABC three-phase of second electric substation 2 has pressure, device starts through Tb2 delay tripping relay 2TJ action and broadening 200m jumps the 2DL switch, enabling signal relay XJT sends out trip signal simultaneously, confirm the switch tripping, close the 4DL switch through 3HJ action of Tb3 time-delay closing relay and broadening 200ms, enabling signal relay XJH sends out switching signal simultaneously.
Discharging condition: 4DL closes; Hand is jumped 2DL or 5DL (KKJ2 or KKJ5=0); Other outside block signals; 2DL, the TWJ of 4DL or 5DL is unusual, and device closes a floodgate and exports the back discharge; First and second electric substation's equal three-phases of 110kV bus do not have pressure, time-delay 15s discharge.
Claims (4)
1, a kind of automatic switching device of standby power supply based on optical fiber communication, the bus of electric substation's first (1) joins by the bus of circuit three (7) and electric substation's second (2), electric substation's first is equipped with decompression disconnection device (8), electric substation's second is equipped with automatic switching device of standby power supply (9), it is characterized in that: the CPU card of described decompression disconnection device (8) and automatic switching device of standby power supply (9) all is provided with communication interface (13), wherein the CPU card of automatic switching device of standby power supply (9) is finished sampled data and is read, filtering, Data Receiving, data sync, fault judgement, the tripping operation outlet logic, described communication interface connects communication equipment, connects by optical cable (10) between described communication equipment.
2, the automatic switching device of standby power supply based on optical fiber communication according to claim 1 is characterized in that: described communication equipment is made up of PCM and multiple connection interface equipment.
3, the automatic switching device of standby power supply based on optical fiber communication according to claim 1 is characterized in that: described communication interface is built-in photoelectricity translation interface.
4, the automatic switching device of standby power supply based on optical fiber communication according to claim 1, it is characterized in that: the bus of described electric substation first (1) joins by the bus of circuit one (5) and electric substation third (3), the bus of described electric substation second (2) joins by the bus of circuit two (6) and electric substation's fourth (4), establish switch 1DL and switch 2DL on the circuit one (5), establish switch 5DL and switch 6DL on the circuit two (6), circuit three (7) connects the bus of electric substation's first (1) and the bus of electric substation's second (2), and establishes switch 3DL and switch 4DL thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201667277U CN201282358Y (en) | 2008-10-16 | 2008-10-16 | Standby power supply self-casting device based on optical fibre communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008201667277U CN201282358Y (en) | 2008-10-16 | 2008-10-16 | Standby power supply self-casting device based on optical fibre communication |
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| CN201282358Y true CN201282358Y (en) | 2009-07-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834469A (en) * | 2010-04-16 | 2010-09-15 | 清华大学 | Transformer substation-dispatching center two-stage distribution type restoration control method |
| CN102255380A (en) * | 2011-08-02 | 2011-11-23 | 上海思源弘瑞自动化有限公司 | Intelligent self-adaptive automatic throw-in equipment and method thereof of emergency power supplies in substation |
-
2008
- 2008-10-16 CN CNU2008201667277U patent/CN201282358Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834469A (en) * | 2010-04-16 | 2010-09-15 | 清华大学 | Transformer substation-dispatching center two-stage distribution type restoration control method |
| CN101834469B (en) * | 2010-04-16 | 2012-06-20 | 清华大学 | Transformer substation-dispatching center two-stage distribution type restoration control method |
| CN102255380A (en) * | 2011-08-02 | 2011-11-23 | 上海思源弘瑞自动化有限公司 | Intelligent self-adaptive automatic throw-in equipment and method thereof of emergency power supplies in substation |
| CN102255380B (en) * | 2011-08-02 | 2013-04-17 | 上海思源弘瑞自动化有限公司 | Intelligent substation self-adaptive Standby power supply automatic throw-in equipment and method |
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