CN202142905U - Logic device for shutting mistaken switching of spare power source automatic switch device of power supply - Google Patents
Logic device for shutting mistaken switching of spare power source automatic switch device of power supply Download PDFInfo
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- CN202142905U CN202142905U CN201120169744U CN201120169744U CN202142905U CN 202142905 U CN202142905 U CN 202142905U CN 201120169744 U CN201120169744 U CN 201120169744U CN 201120169744 U CN201120169744 U CN 201120169744U CN 202142905 U CN202142905 U CN 202142905U
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Abstract
The utility model provides a logic device for shutting mistaken switching of a spare power source automatic switch device of a power supply, which comprises a plurality of criterion circuits. Each criterion circuit for determining bus failure is connected with a shutting circuit opening point of the spare power source automatic switch device through a NAND gate, wherein the plurality of the criterion circuits comprise overcurrent sudden-change starting components, direction power components, composite voltage sudden-change starting components, switching escaping pressure board LP and the like. The overcurrent sudden-change starting components obtain failure current at a failing moment of a bus of each phase respectively. The direction power components in the criterion circuits obtain failure current and failure voltage at the failing moment of the bus of each phase respectively. The composite voltage sudden-change starting components obtain failure voltage at the failing moment of the bus of each phase respectively to compose logic criterion for shutting mistaken switching of the spare power source automatic switch device of the power supply, and a shutting function is obtained.
Description
Technical field
The utility model relates to power-supply system prepared auto restart technical field, relates in particular to a kind of logic device of locking power supply prepared auto restart miscarrying.
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 has improved power supply.
Operational mode with terminal station sectionalized single busbar connection (main is equipped with) wiring is an example, and the B station mode of connection is as shown in Figure 1: single mother partition, one main one is equipped with, and is equipped with each other and throws (discerning active and standby line work state automatically).
Haul oneself willingly into mode 1: the power supply of operation septal line, subsequent use septal line is subsequent use, and block switch is closing the position.Its charge condition, discharging condition and operation condition are respectively:
1. charge condition
A:B station 1M, the equal three-phase of 2M have pressure, and subsequent use interval circuit has pressure; B:DL3 is closing the position, and DL4 is closing the position, and DL5 is in a minute position; C: prepared auto restart function pressing plate drops into.Above condition satisfies simultaneously after charging completion behind the delay time.
2. discharging condition
A:B station 1M, the equal three-phase of 2M do not have pressure, and the operation septal line is flowed through to delay time and discharged; B: subsequent use interval circuit does not have pressure; C:DL5 is closing the position; D: hand is jumped DL3; The e:DL5 maintenance; F: block signals such as bus differential protection action open into.
3. course of action:
D point failure in Fig. 1, after DL1 and DL3 tripped, device detected 1M, 2M bus loss of pressure, operation septal line no current, operation septal line DL3 switch is broken off in time-delay again, and after affirmation DL3 switch broke off, subsequent use septal line DL5 switch was hauled oneself willingly in time-delay.Its action logic block diagram is seen Fig. 2.
Under this wiring operational mode other hauled oneself willingly into mode: like the power supply of subsequent use septal line, the operation septal line is subsequent use, and block switch is narrated at this in that to close position or the like operation condition analysis strategy and mode one similar no longer one by one.
Yet, can find out that from the analysis of above-mentioned prepared auto restart action logic when the d2 point broke down on d1 point and the 2M on the 1M of B station in like Fig. 1, backup auto-activating device was to differentiate bus dead electricity that line fault or busbar fault cause.No matter be which kind of situation; Backup auto-activating device all can move; 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 backup auto-activating device setting be exactly block signals 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 backup auto-activating device locking discharge, stop miscarrying.
But the bus of the transformer station of a part is not installed bus differential protecting at present; The single mother partition in terminal station transformer station for example; Just saying does not have the bus differential protection action to open into backup auto-activating device yet, therefore can't stop above-mentioned miscarrying, has formed the significant deficiency that backup auto-activating device blindly drops into.
The utility model content
The technical problem that the utility model will solve is to provide a kind of logic device of novel locking power supply prepared auto restart miscarrying.
A kind of logic device of locking power supply prepared auto restart miscarrying comprises several criterion circuit of judging busbar fault, and each said criterion circuit is opened into point through the locked loop that NAND gate is connected to backup auto-activating device.
Preferably, said a plurality of decision circuitry comprises that overcurrent sudden change starting component, direction power component and the composite voltage sudden change starting component and the throwing that are connected respectively to said NAND gate input move back pressing plate LP.
Compared with prior art, the logic device of the locking power supply prepared auto restart of the utility model miscarrying comprises several criterion circuit of judging busbar fault, and each said criterion circuit is opened into point through the locked loop that NAND gate is connected to backup auto-activating device.Therefore, when each said criterion circuit judges busbar fault, the output of each criterion circuit is opened into point at the locked loop that exports said backup auto-activating device to through after the said NAND gate.When fault, through said NAND gate said locked loop is opened into contact open and to be gone into block signal, realize the function of locking backup auto-activating device.
The logic device of a kind of locking power supply prepared auto restart miscarrying comprises overcurrent sudden change starting component, direction power component, first switch, the second switch of each phase; Also comprise composite voltage sudden change starting component and the 3rd switch; Said first switch and said second switch correspondence one by one are composed in series first switching branches, and each said first switching branches composes in parallel the second switch branch road mutually, and said second switch branch road is connected with said the 3rd switch; Said first switch of the corresponding connection of output of each said overcurrent sudden change starting component; Said second switch of the corresponding connection of the output of each said direction power component; The output of said composite voltage sudden change starting component connects said the 3rd switch; The corresponding input of each said overcurrent sudden change starting component one phase induced current; The corresponding input of each said direction power component one phase induced current and induced voltage; Said composite voltage sudden change starting component input three-phase induction voltage.
Compared with prior art; The logic device of the locking power supply prepared auto restart miscarrying of the utility model comprises said overcurrent sudden change starting component, said direction power component and said composite voltage sudden change starting component; Obtain or calculate induced current, induced voltage and the induced power of tested bus respectively; Occur when unusual at three-phase induction electric current, the voltage of bus; Can pass through said first switch, second switch and the 3rd switch and form the closed-loop path, the locked loop of said backup auto-activating device is opened into an output block signal, locking backup auto-activating device.Bus for the single mother partition in terminal station transformer station is not installed bus differential protecting, the purpose of locking backup auto-activating device when the logic device that also can miscarry through the locking power supply prepared auto restart of the utility model reaches busbar fault.The logic device of the locking power supply prepared auto restart miscarrying of the utility model can be made into the independent entity device; Add in existing backup auto-activating device or the prepared auto restart system; Make existing various prepared auto restart system can both when busbar fault, realize locking; Need not to change existing prepared auto restart system, very convenient.
Preferably, in the logic device of said locking power supply prepared auto restart miscarrying, said direction power component connects said overcurrent sudden change starting component, and through said overcurrent sudden change starting component input induced current.Can simplify the circuit connection of the logic device of the utility model locking power supply prepared auto restart miscarrying, improve the integrated level of the logic device of locking power supply prepared auto restart miscarrying.
Preferably, the logic device of said locking power supply prepared auto restart miscarrying comprises also throwing and moves back pressing plate that said throwing is moved back pressing plate and connected with said the 3rd switch.Through being set, said throwing moves back pressing plate; The logic device that can manually control the miscarrying of said locking power supply prepared auto restart whether open into; Move back pressing plate if break off said throwing, then the logic device of locking power supply prepared auto restart miscarrying is operated under the existing working method, moves back pressing plate if drop into said throwing; Then the logic device of locking power supply prepared auto restart miscarrying impels backup auto-activating device to carry out block action when busbar fault, can prevent that busbar fault from dropping into once more to cause accident to enlarge.
Description of drawings
Fig. 1 is the terminal station single-trunk segmental wiring figure of prior art;
Fig. 2 is the action logic sketch map of the logic device of prior art locking power supply prepared auto restart miscarrying;
Fig. 3 is the electrical block diagram of a kind of execution mode of logic device of the utility model locking power supply prepared auto restart miscarrying;
Fig. 4 is the action logic sketch map of backup auto-activating device of using the logic device of the utility model locking power supply prepared auto restart miscarrying;
Fig. 5 is the electrical block diagram of another kind of execution mode of the logic device of the utility model locking power supply prepared auto restart miscarrying.
Embodiment
See also Fig. 3, Fig. 3 is the electrical block diagram of a kind of execution mode of logic device of the utility model locking power supply prepared auto restart miscarrying.Wherein, be depicted as the logic device of said locking power supply prepared auto restart miscarrying in the frame of broken lines.
The logic device of said locking power supply prepared auto restart miscarrying comprises several criterion circuit of judging busbar fault, and each said criterion circuit is opened into point through the locked loop that NAND gate is connected to backup auto-activating device.
In one embodiment, said a plurality of decision circuitry comprises that overcurrent sudden change starting component, direction power component and the composite voltage sudden change starting component and the throwing that are connected respectively to said NAND gate input move back pressing plate LP.
Please consult Fig. 4, Fig. 4 is the action logic sketch map of backup auto-activating device of using the logic device of the utility model locking power supply prepared auto restart miscarrying.
The operation condition of said backup auto-activating device is: install other charge conditions and possess, 1, the 2M bus has pressure, subsequent use interval circuit has pressure, the position is being closed in operation circuit breaker at interval, subsequent use interval circuit breaker in minute position and said locked loop open into an attonity.When above-mentioned condition all satisfies, begin to carry out the prepared auto restart action behind the backup auto-activating device process time-delay t.
The criterion circuit of the logic device of said locking power supply prepared auto restart miscarrying comprises: pressing plate LP is moved back in overcurrent sudden change starting component KV, direction power component KW and composite voltage sudden change starting component KVU and throwing; Each criterion circuit is connected to the input of said NAND gate respectively, and the output of said NAND gate is connected to the locked loop of said backup auto-activating device and opens into point.
Then, the action logic of the logic device of said locking power supply prepared auto restart miscarrying is:
Said throwing is moved back pressing plate LP and is dropped into;
Said overcurrent sudden change starting component KV1, KV2, KV3 action;
Said direction power component KW1, KW2, KW3 action;
And, said composite voltage sudden change starting component KVU action.
When meeting above-mentioned operation condition, each said criterion circuit is output as 1, and said NAND gate is output as 0, opens into the said backup auto-activating device of a locking through the locked loop of said backup auto-activating device.
For example, 1M bus district is equipment fault between circuit breaker DL3, DL4, DL6 among Fig. 1, like the d1 point failure, causes working power circuit breaker DL1 would trip (knowing according to the principle analysis of 110kV route protection).Operation septal line no current, 1M, 2M bus do not have pressure, subsequent use interval circuit has pressure, the logic device action of then said locking power supply prepared auto restart miscarrying, with the prepared auto restart locking, thus reach locking miscarry into effect.2M bus district fault implementation and 1M bus district fault are basic identical, do not give unnecessary details at this.
The logic device of the locking power supply prepared auto restart miscarrying of the utility model can be made into the independent entity device; Add in existing backup auto-activating device or the prepared auto restart system; Make existing various prepared auto restart system can both when busbar fault, realize locking; Need not to change existing prepared auto restart system, very convenient.According to installation site and the difference that detects data, can be respectively to the operation septal line, and/or the fault of subsequent use septal line detects, the locking backup auto-activating device.
See also Fig. 5, Fig. 5 is the electrical block diagram of another kind of execution mode of the logic device of the utility model locking power supply prepared auto restart miscarrying.Wherein, be depicted as the logic device of said locking power supply prepared auto restart miscarrying in the frame of broken lines.
The logic device of said locking power supply prepared auto restart miscarrying comprises: corresponding respectively each overcurrent that detects mutually sudden change starting component KA1, KA2 and KA3, direction power component KW1, KW2 and KW3, first switch S 11, S12 and S13, second switch S21, S22 and S23; Also comprise composite voltage sudden change starting component KVU and the 3rd switch S 3.
Each said first switching branches composes in parallel the second switch branch road mutually, and said second switch branch road is connected with said the 3rd switch S 3.
When said first switch and the said second switch of a phase wherein all closed; And when said the 3rd switch is also closed; The circuit closed of the logic device of said locking power supply prepared auto restart miscarrying; Open into the said backup auto-activating device of a locking through the locked loop of said backup auto-activating device, when busbar fault causes other operation conditions of said backup auto-activating device all to satisfy, miscarrying can not take place yet go into.
In the logic device of said locking power supply prepared auto restart miscarrying, said first switch of the corresponding connection of output of each said overcurrent sudden change starting component.That is overcurrent sudden change starting component KA1 connects first switch S 11; Overcurrent sudden change starting component KA2 connects first switch S 12; Overcurrent sudden change starting component KA3 connects first switch S 13.And corresponding said first switch motion that triggers its connection of each said overcurrent sudden change starting component.
The induced current of one phase of the corresponding input of each said overcurrent sudden change starting component detected bus.Said induced current can obtain through on the monitoring bus, current sensing elements TA being set, and said overcurrent sudden change starting component connects current corresponding sensing element TA, thereby obtains corresponding induced current.The operation condition of said overcurrent sudden change starting component can be set through definite value and realize; For example can set trigger condition for surpassing predetermined current scope etc.; Set according to user's needs and actual conditions; When surpassing said predetermined current scope, the action of said overcurrent sudden change starting component triggers said first switch closure.
In the logic device of said locking power supply prepared auto restart miscarrying, said second switch of the corresponding connection of the output of each said direction power component.That is direction power component KW1 connects second switch S21; Direction power component KW2 connects second switch S22; Direction power component KW3 connects second switch S23.And the corresponding said second switch action that triggers its connection of each said direction power component.
One phase induced current and induced voltage of the corresponding input of each said direction power component detected bus, and according to said induced current and induced voltage rated output.Said induced current can obtain through on the monitoring bus, current sensing elements TA being set, and said induced voltage can obtain through on the monitoring bus, voltage induced elements T V being set, and no longer illustrates at this.The operation condition of said direction power component can be set through definite value equally and realize, for example can set trigger condition for surpassing the predetermined electric power scope, and the action of then said overcurrent sudden change starting component triggers said second switch closure.
As a preferred implementation, said direction power component can connect said overcurrent sudden change starting component, and through said overcurrent sudden change starting component input induced current.Can simplify the circuit connection of the logic device of the utility model locking power supply prepared auto restart miscarrying like this, improve the logic device integrated level of locking power supply prepared auto restart miscarrying.
In the logic device of said locking power supply prepared auto restart miscarrying, the output of said composite voltage sudden change starting component KVU connects said the 3rd switch S 3, and controls the action of said the 3rd switch S 3.
The three-phase induction voltage of said composite voltage sudden change starting component KVU input detected bus; As a phase induced voltage wherein in busbar fault variation constantly; When causing the input of three-phase voltage of said composite voltage sudden change starting component KVU uneven; Said composite voltage sudden change starting component KVU action triggers said the 3rd switch S 3 closures.The operation condition of said composite voltage sudden change starting component KVU can be set through definite value equally and realize, for example setting voltage fluctuation range etc.
As a kind of preferred implementation of the utility model, in the logic device of said locking power supply prepared auto restart miscarrying, further be provided with to throw and move back pressing plate LP, pressing plate LP is moved back in said throwing can manually control disconnection or input.When pressing plate LP was moved back in the said throwing of disconnection, then backup auto-activating device was operated under the existing working method, does not carry out the blocking function of busbar fault; Move back pressing plate LP when dropping into said throwing, then the logic device of locking power supply prepared auto restart miscarrying is operated under the pattern of busbar fault locking, can when busbar fault, realize blocking function.
Preferably, the logic device of said locking power supply prepared auto restart miscarrying can be made into the independent entity device, respectively operation septal line and subsequent use septal line is detected.The logic device of the locking power supply prepared auto restart miscarrying of the utility model both can be only to having moved one of them realization busbar fault blocking function of septal line and subsequent use septal line; Also can all realize the busbar fault blocking function to operation septal line and subsequent use septal line simultaneously; So that under various operational modes, can both carry out the action of locking backup auto-activating device to busbar fault; Replace the bus differential protection action connection point to come the locking backup auto-activating device with its contact, realize blocking function.
Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.The modification of being done within any spirit and principle at 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. the logic device of a locking power supply prepared auto restart miscarrying is characterized in that, comprises overcurrent sudden change starting component, direction power component, first switch, the second switch of each phase; Also comprise composite voltage sudden change starting component and the 3rd switch;
Said first switch and said second switch correspondence one by one are composed in series first switching branches, and each said first switching branches composes in parallel the second switch branch road mutually, and said second switch branch road is connected with said the 3rd switch;
Said first switch of the corresponding connection of output of each said overcurrent sudden change starting component; Said second switch of the corresponding connection of the output of each said direction power component; The output of said composite voltage sudden change starting component connects said the 3rd switch;
The corresponding input of each said overcurrent sudden change starting component one phase induced current; The corresponding input of each said direction power component one phase induced current and induced voltage; Said composite voltage sudden change starting component input three-phase induction voltage.
2. the logic device of locking power supply prepared auto restart miscarrying as claimed in claim 1 is characterized in that: said direction power component connects said overcurrent sudden change starting component, and through said overcurrent sudden change starting component input induced current.
3. like the logic device of claim 1 or 2 described locking power supply prepared auto restart miscarryings, it is characterized in that: also comprise throwing and move back pressing plate, said throwing is moved back pressing plate and is connected with said the 3rd switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120169744U CN202142905U (en) | 2011-05-25 | 2011-05-25 | Logic device for shutting mistaken switching of spare power source automatic switch device of power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120169744U CN202142905U (en) | 2011-05-25 | 2011-05-25 | Logic device for shutting mistaken switching of spare power source automatic switch device of power supply |
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| CN202142905U true CN202142905U (en) | 2012-02-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904221A (en) * | 2012-09-19 | 2013-01-30 | 深圳供电局有限公司 | Backup automatic switching locking method and device for 10kV distribution room of intelligent substation |
| CN103595120A (en) * | 2013-11-21 | 2014-02-19 | 长园深瑞继保自动化有限公司 | Multi-incoming-line standby power supply automatic switching-in method |
| CN106169740A (en) * | 2016-08-29 | 2016-11-30 | 国网江苏省电力公司镇江供电公司 | 110kV single-trunk segmental wiring incoming relay-protection locking prepared auto restart relay protecting method |
| CN106207985A (en) * | 2016-08-29 | 2016-12-07 | 国网江苏省电力公司镇江供电公司 | Incoming relay-protection subsidiary discriminant sectionalized single busbar connection bus differential protection locking spare power automatic switching method |
| CN106300292A (en) * | 2016-08-29 | 2017-01-04 | 国网江苏省电力公司镇江供电公司 | 110kV incoming relay-protection comprehensive locking prepared auto restart relay protecting method |
| CN106300282A (en) * | 2016-08-29 | 2017-01-04 | 国网江苏省电力公司镇江供电公司 | Single-trunk segmental wiring 110kV bus differential protection locking prepared auto restart guard method |
| CN109327009A (en) * | 2018-08-22 | 2019-02-12 | 贵州电网有限责任公司 | The anti-miscarrying method of risky pressing plate is directed to when a kind of breaker protection regular inspection |
| CN109831024A (en) * | 2019-04-11 | 2019-05-31 | 国网江苏省电力有限公司镇江供电分公司 | Joint in-put of spare power supply method based on stand-by heat route |
| CN109861225A (en) * | 2019-04-11 | 2019-06-07 | 国网江苏省电力有限公司镇江供电分公司 | Stand-by heat route in-put of spare power supply method based on optical-fibre channel |
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2011
- 2011-05-25 CN CN201120169744U patent/CN202142905U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102904221A (en) * | 2012-09-19 | 2013-01-30 | 深圳供电局有限公司 | Backup automatic switching locking method and device for 10kV distribution room of intelligent substation |
| CN102904221B (en) * | 2012-09-19 | 2016-01-06 | 深圳供电局有限公司 | Backup automatic switching locking method and device for 10kV distribution room of intelligent substation |
| CN103595120A (en) * | 2013-11-21 | 2014-02-19 | 长园深瑞继保自动化有限公司 | Multi-incoming-line standby power supply automatic switching-in method |
| CN103595120B (en) * | 2013-11-21 | 2015-11-18 | 长园深瑞继保自动化有限公司 | Many inlet wires standby electric power automatic throwing method |
| CN106300292B (en) * | 2016-08-29 | 2018-10-12 | 国网江苏省电力公司镇江供电公司 | 110kV incoming relay-protections synthesis locking prepared auto restart relay protecting method |
| CN106300282B (en) * | 2016-08-29 | 2018-11-23 | 国网江苏省电力公司镇江供电公司 | Single-trunk segmental wiring 110kV bus differential protection is latched prepared auto restart guard method |
| CN106300292A (en) * | 2016-08-29 | 2017-01-04 | 国网江苏省电力公司镇江供电公司 | 110kV incoming relay-protection comprehensive locking prepared auto restart relay protecting method |
| CN106300282A (en) * | 2016-08-29 | 2017-01-04 | 国网江苏省电力公司镇江供电公司 | Single-trunk segmental wiring 110kV bus differential protection locking prepared auto restart guard method |
| CN106169740B (en) * | 2016-08-29 | 2018-08-31 | 国网江苏省电力公司镇江供电公司 | 110kV single-trunk segmental wiring incoming relay-protections are latched prepared auto restart relay protecting method |
| CN106207985B (en) * | 2016-08-29 | 2018-08-31 | 国网江苏省电力公司镇江供电公司 | Incoming relay-protection subsidiary discriminant sectionalized single busbar connection bus differential protection is latched spare power automatic switching method |
| CN106169740A (en) * | 2016-08-29 | 2016-11-30 | 国网江苏省电力公司镇江供电公司 | 110kV single-trunk segmental wiring incoming relay-protection locking prepared auto restart relay protecting method |
| CN106207985A (en) * | 2016-08-29 | 2016-12-07 | 国网江苏省电力公司镇江供电公司 | Incoming relay-protection subsidiary discriminant sectionalized single busbar connection bus differential protection locking spare power automatic switching method |
| CN109327009A (en) * | 2018-08-22 | 2019-02-12 | 贵州电网有限责任公司 | The anti-miscarrying method of risky pressing plate is directed to when a kind of breaker protection regular inspection |
| CN109327009B (en) * | 2018-08-22 | 2020-01-07 | 贵州电网有限责任公司 | Method for preventing misoperation of dangerous pressing plate during circuit breaker protection scheduled inspection |
| CN109831024A (en) * | 2019-04-11 | 2019-05-31 | 国网江苏省电力有限公司镇江供电分公司 | Joint in-put of spare power supply method based on stand-by heat route |
| CN109861225A (en) * | 2019-04-11 | 2019-06-07 | 国网江苏省电力有限公司镇江供电分公司 | Stand-by heat route in-put of spare power supply method based on optical-fibre channel |
| CN109861224B (en) * | 2019-04-11 | 2021-04-13 | 国网江苏省电力有限公司镇江供电分公司 | Hot standby circuit combined standby power supply switching method based on optical fiber channel |
| CN109861225B (en) * | 2019-04-11 | 2021-04-27 | 国网江苏省电力有限公司镇江供电分公司 | Hot standby circuit standby power supply switching method based on optical fiber channel |
| CN112582989A (en) * | 2020-12-16 | 2021-03-30 | 广东电网有限责任公司 | Power system for preventing backup power automatic switching on and switching off of fault bus and control method thereof |
| CN112582989B (en) * | 2020-12-16 | 2023-02-10 | 广东电网有限责任公司 | Power system for preventing backup power automatic switching on and switching off of fault bus and control method thereof |
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Effective date of registration: 20160812 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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