CN202488206U - 110 kV system active-standby spare power automatic switching bus region fault locking device - Google Patents
110 kV system active-standby spare power automatic switching bus region fault locking device Download PDFInfo
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- CN202488206U CN202488206U CN2012200566453U CN201220056645U CN202488206U CN 202488206 U CN202488206 U CN 202488206U CN 2012200566453 U CN2012200566453 U CN 2012200566453U CN 201220056645 U CN201220056645 U CN 201220056645U CN 202488206 U CN202488206 U CN 202488206U
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- automatic switching
- power automatic
- spare power
- auto restart
- prepared auto
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- 230000005284 excitation Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses a 110 kV system active-standby spare power automatic switching bus region fault locking device. Secondary winding polar ends of an inlet wire spacing current transformer and an outlet wire spacing current transformer in a 110 kV system active-standby spare power automatic switching primary device are in a parallel connection, nonpolar ends of the inlet wire spacing current transformer and the outlet wire spacing current transformer in the 110 kV system active-standby spare power automatic switching primary device are in the parallel connection, the polar ends and the nonpolar ends which are in the parallel connection respectively are in the parallel connection with a differential start element relay to form a differential circuit start unit, one end of a normally open contact of the relay is connected with a locking loop switching value input point of a spare power automatic switching device, and one end of the normally open contact of the relay is connected with a spare power automatic switching public power supply end. When a fault occurs in a bus region, a fault current can be induced by secondary windings of the inlet wire and outlet wire spacing current transformers, the relay can perform excitation, the normally open contact of the relay is closed, a voltage signal triggers the locking loop switching value input point of the spare power automatic switching device, and the spare power automatic switching device can achieve locking. Accordingly, the locking device can serve as an independent physical device and can be embedded into the existing spare power automatic switching device as well, and a locking function of the spare power automatic switching device can be extremely conveniently achieved when the fault occurs in the bus region.
Description
Technical field
The utility model relates to the safe operation of power system technical field, and particularly a kind of 110kV one master one of system is equipped with prepared auto restart bus zone failure locking device.
Background technology
Prepared auto restart is come into operation the automatically abbreviation of device of stand-by power supply.The prepared auto restart system of power supply act as: under the situation that working power loses suddenly, and automatic put-in spair power source, the electricity consumption that recovers decompression equipment rapidly guarantees the continuity of supplying power.See that from nearly 2 years ruuning situation prepared auto restart exists equipment simple, obvious advantage such as stable grade is playing key effect aspect the reliability that improves power supply.
As shown in Figure 1, the 110kV components of system as directed adopts a master one to be equipped with the operational mode of wiring at present.Can know from the action logic of the prepared auto restart installed; When the d2 point breaks down on d1 point and the 2M bus on the 1M bus as shown in Figure 1; Prepared auto restart is to differentiate electrical breakdown that line fault or busbar fault cause; No matter be which kind of situation, prepared auto restart all can move, and stand-by power supply is blindly dropped into automatically.If this moment, fault was to produce (equipment fault comprises the fault of equipment such as bus, interfacility link, circuit breaker, disconnecting link, voltage transformer, current transformer) by the equipment that links to each other with bus, automatic closing will enlarge fault coverage in fault.
Take place for fear of above-mentioned situation, one of locking discharging condition of prepared auto restart setting be exactly block signal such as bus differential protection action open into, said block signal can through the locked loop of backup auto-activating device open into point open into, make prepared auto restart locking discharge, stop miscarrying.But the bus of the transformer station of 110kV system of a part is not installed bus differential protecting at present, and just saying does not have the bus differential protection action to open into prepared auto restart yet, therefore can't stop above-mentioned miscarrying, has formed the significant deficiency that prepared auto restart blindly drops into.
The utility model content
The purpose of the utility model is to propose a kind of 110kV one master one of system to be equipped with prepared auto restart bus zone failure locking device, when break down in the bus zone, makes prepared auto restart realize blocking function.
The utility model 110kV system one main one is equipped with prepared auto restart bus zone failure locking device; Comprise the differential circuit start unit; Said differential circuit start unit comprises the relay of parallel connection and inlet wire spacing current instrument transformer and the outlet spacing current instrument transformer that 110kV system one main is equipped with in the prepared auto restart primary equipment; The secondary winding polar end of said inlet wire spacing current instrument transformer and outlet spacing current instrument transformer and connect, non-polar end and connecing; The normal opened contact one of said relay is terminated at the locked loop that 110kV system one main is equipped with prepared auto restart and opens into point, and one is terminated at the public power end that 110kV system one main is equipped with prepared auto restart.
Preferably; Also comprise throwing and move back pressing plate; Be connected between said locked loop that normal opened contact and the 110kV system one main of said relay be equipped with prepared auto restart opens a little; The pattern that withdraws from that pressing plate breaks off corresponding this locking device is moved back in said throwing, and the busbar fault locking pattern that pressing plate drops into corresponding this locking device is moved back in said throwing.
Preferably, the number of said inlet wire interval instrument transformer and outlet interval instrument transformer is 2.
The utility model 110kV system one main one is equipped with prepared auto restart bus zone failure locking device; With 110kV system one main be equipped with the secondary winding polar end of inlet wire spacing current instrument transformer and outlet spacing current instrument transformer in the prepared auto restart primary equipment and connect, non-polar end and connecing; Polarity and nonpolar section also connect and compose in parallel the differential circuit start unit with a differential starting component relay again after the back forms a current circuit; A normal opened contact one of relay is terminated at a locked loop of prepared auto restart and opens into point, and one is terminated at prepared auto restart public power end.When break down in the bus zone; Turnover line spacing current instrument transformer secondary winding is sensed fault current, differential starting component relay excitation, and the normal opened contact of differential starting component relay is closed; Voltage signal triggers the locked loop of prepared auto restart and opens into point, and prepared auto restart is realized locking.So, this locking device can be used as an independent entity device, also can be embedded in existing prepared auto restart, has realized the blocking function of prepared auto restart when breaking down in the bus zone easily.
Description of drawings
Fig. 1 is 110kV one a main stand-by power source prepared auto restart primary equipment wiring operational mode sketch map;
Fig. 2 is the core devices differential circuit start unit structural representation that the utility model 110kV system one main is equipped with prepared auto restart bus zone failure locking device;
Fig. 3 is the structural representation that the utility model 110kV system one main is equipped with prepared auto restart bus zone failure locking device and prepared auto restart;
Fig. 4 is that bag is thrown the general structure sketch map that the utility model 110kV system one main of moving back pressing plate is equipped with prepared auto restart bus zone failure locking device and prepared auto restart.
Embodiment
In order to break down in the bus zone, make prepared auto restart realize locking, at first should be able to detect bus zone fault.Analysis can get, and when on 1M bus shown in Figure 1 or the 2M bus break down in arbitrary fault point, breaks down like the d1 point, and all fault currents of system will flow to fault point d1, and current transformer CT1, CT2, CT3, CT4 all sense fault current.This locking device had both utilized current transformer can respond to the characteristics of bus zone fault current, and current transformer is formed the differential circuit start unit as the detecting element of bus zone fault and the triggering element of block signal, realized the locking of prepared auto restart.Below in conjunction with this locking device of accompanying drawing illustrated in detail.
Shown in Figure 1 is 110kV one a main stand-by power source prepared auto restart primary equipment wiring operational mode sketch map; Can know; Have only two intervals on the same bus,, have only subsequent use interval circuit and #2 main transformer on the 2M bus as having only operation circuit and #1 main transformer at interval on the 1M bus; That is to say that putting in order the station has only four intervals at most, exists the wiring characteristic of simple.Wherein, current transformer CT1, CT3 are inlet wire spacing current instrument transformer, and current transformer CT2, CT4 are outlet spacing current instrument transformer.The utility model is with the secondary winding polar end of inlet wire spacing current instrument transformer CT1 and/or CT3 and outlet spacing current instrument transformer CT2 and/or CT4 and connect; Non-polar end also and connect; Polarity and nonpolar section also connect and compose in parallel the differential circuit start unit with a differential starting component relay again after the back forms a current circuit; Differential starting component relay CJ in this start unit is the core devices of this locking device.
As a preferred embodiment, as shown in Figure 2, the secondary winding of four current transformer CT1, CT2, CT3 and CT4, and differential starting component relay CJ composes in parallel the differential circuit start unit.
Get a normal opened contact CJ-1 from differential starting component relay CJ and constitute the prepared auto restart logical condition, when promptly CJ-1 is closed, the prepared auto restart locking.For this reason, as shown in Figure 3, normal opened contact CJ-1 one end connects a locked loop of backup auto-activating device to be opened into a N, and it is COM+24V that an end connects backup auto-activating device public power end.So; When break down in the bus zone; Differential starting component relay CJ excitation in the differential circuit start unit; The normal opened contact CJ-1 of differential starting component relay CJ is closed, and to open into a N by the locked loop of backup auto-activating device be that COM+24V forms loop with backup auto-activating device public power end to this locking device after the normal opened contact CJ-1 closure, and voltage signal is opened into a N from the flow through locked loop of CJ-1 arrival backup auto-activating device of public power end; Backup auto-activating device receives block signal, realizes blocking function.
Use for ease, this locking device comprises that also manually controlling the throwing that drops into or break off for one moves back pressing plate LP.Preferably, as shown in Figure 4, LP is connected in the normal opened contact CJ-1 and the said locked loop of said differential starting component relay and opens between the N.When prepared auto restart need be in bus zone be realized locking during fault, the staff dropped into LP, and this locking device is operated under the busbar fault locking pattern; When prepared auto restart need be in bus zone not be realized locking during fault, break off LP, this locking device both had been operated in the pattern of withdrawing from.
The embodiment of above-described the utility model, and be not used in the qualification of the protection range that limits the utility model, but describe to the possible embodiments of the utility model.The modification of being done within any spirit and principle based on the utility model, be equal to replacement and improvement etc., all should be included within the claim protection range of the utility model.
Claims (3)
1. a 110kV system one main is equipped with prepared auto restart bus zone failure locking device; It is characterized in that; Comprise the differential circuit start unit; Said differential circuit start unit comprises the relay of parallel connection and inlet wire spacing current instrument transformer and the outlet spacing current instrument transformer that 110kV system one main is equipped with in the prepared auto restart primary equipment; The secondary winding polar end of said inlet wire spacing current instrument transformer and outlet spacing current instrument transformer and connect, non-polar end and connecing, the normal opened contact one of said relay is terminated at the locked loop that 110kV system one main is equipped with prepared auto restart and opens into point, one is terminated at the public power end that 110kV system one main is equipped with prepared auto restart.
2. 110kV one master one of system according to claim 1 is equipped with prepared auto restart bus zone failure locking device; It is characterized in that; Also comprise throwing and move back pressing plate; Be connected between said locked loop that normal opened contact and the 110kV system one main of said relay be equipped with prepared auto restart opens a little, the pattern that withdraws from that pressing plate breaks off corresponding this locking device is moved back in said throwing, and the busbar fault locking pattern that pressing plate drops into this locking device of correspondence is moved back in said throwing.
3. 110kV one master one of system according to claim 1 and 2 is equipped with prepared auto restart bus zone failure locking device, it is characterized in that said inlet wire interval instrument transformer and the outlet number of instrument transformer at interval are 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200566453U CN202488206U (en) | 2012-02-21 | 2012-02-21 | 110 kV system active-standby spare power automatic switching bus region fault locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200566453U CN202488206U (en) | 2012-02-21 | 2012-02-21 | 110 kV system active-standby spare power automatic switching bus region fault locking device |
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|---|---|
| CN202488206U true CN202488206U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200566453U Expired - Lifetime CN202488206U (en) | 2012-02-21 | 2012-02-21 | 110 kV system active-standby spare power automatic switching bus region fault locking device |
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| CN (1) | CN202488206U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301926A (en) * | 2018-11-08 | 2019-02-01 | 国网福建省电力有限公司泉州供电公司 | A kind of internal bridge intelligent substation and its prepared auto restart blocking method |
| CN110174586A (en) * | 2019-07-08 | 2019-08-27 | 北京航天常兴科技发展股份有限公司 | One kind supplies power with double circuit system and its anticreep false alarm monitoring device, monitoring method |
| CN110350651A (en) * | 2019-07-09 | 2019-10-18 | 国网安徽省电力有限公司宣城供电公司 | The prepared auto restart faulty action preventing method of 110kV single busbar failure |
| CN110611306A (en) * | 2019-07-04 | 2019-12-24 | 广东电网有限责任公司 | Backup power automatic switching locking method for 110kV transformer substation line |
-
2012
- 2012-02-21 CN CN2012200566453U patent/CN202488206U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301926A (en) * | 2018-11-08 | 2019-02-01 | 国网福建省电力有限公司泉州供电公司 | A kind of internal bridge intelligent substation and its prepared auto restart blocking method |
| CN109301926B (en) * | 2018-11-08 | 2024-03-08 | 国网福建省电力有限公司泉州供电公司 | Intelligent substation with internal bridge connection and automatic backup switching locking method thereof |
| CN110611306A (en) * | 2019-07-04 | 2019-12-24 | 广东电网有限责任公司 | Backup power automatic switching locking method for 110kV transformer substation line |
| CN110174586A (en) * | 2019-07-08 | 2019-08-27 | 北京航天常兴科技发展股份有限公司 | One kind supplies power with double circuit system and its anticreep false alarm monitoring device, monitoring method |
| CN110350651A (en) * | 2019-07-09 | 2019-10-18 | 国网安徽省电力有限公司宣城供电公司 | The prepared auto restart faulty action preventing method of 110kV single busbar failure |
| CN110350651B (en) * | 2019-07-09 | 2023-05-26 | 国网安徽省电力有限公司宣城供电公司 | Spare power automatic switching misoperation prevention method for 110kV single bus faults |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160831 Address after: Luohu District Shenzhen Shennan Road 518000 No. 4020 Guangdong provincial power dispatching center building Patentee after: Shenzhen Power Supply Co.,Ltd. Address before: Luohu District Shenzhen Shennan Road 518001 No. 4020 in Guangdong Province Patentee before: SHENZHEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Corp. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |