CN204615507U - Storage batteries of transformer substation remote core to be discharged attending device to property - Google Patents
Storage batteries of transformer substation remote core to be discharged attending device to property Download PDFInfo
- Publication number
- CN204615507U CN204615507U CN201420867290.5U CN201420867290U CN204615507U CN 204615507 U CN204615507 U CN 204615507U CN 201420867290 U CN201420867290 U CN 201420867290U CN 204615507 U CN204615507 U CN 204615507U
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- 238000012423 maintenance Methods 0.000 claims abstract description 11
- 238000012806 monitoring device Methods 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 230000006854 communication Effects 0.000 claims description 6
- 238000007405 data analysis Methods 0.000 claims description 6
- 230000003862 health status Effects 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a kind of storage batteries of transformer substation remote core to discharge attending device to property, the technical problem that storage batteries of transformer substation maintenance work takes time and effort can be solved.Comprise batteries, storage battery on-Line Monitor Device, switch cubicle, charger, discharge instrument, switch operation device, described switch cubicle is mother, female throwing, charging, discharge switch, also comprise equipment management device, described storage battery on-Line Monitor Device is connected with batteries respectively with switch cubicle, described charger, discharge instrument, switch operation device is connected with switch cubicle respectively, described storage battery monitoring device, switch operation device, charger and discharge instrument are connected with the input of equipment management device respectively, equipment management device is connected with PC server by local area network (LAN), described PC server is connected with user terminal by local area network (LAN), realize the remote operation and maintenance work to the electric discharge of the storage batteries of transformer substation property checked.Reasonable in design, time saving and energy saving, accurately and timely.
Description
Technical field
The utility model relates to a kind of storage battery checking electric discharge attending device, is specifically related to a kind of storage batteries of transformer substation property checked electric discharge attending device.
Background technology
Maintenance clearly for DC power supply in new promulgation " State Grid Corporation of China's 18 electrical network major accidents measure " claims: new valve controlled sealed accumulator group of installing, full checking discharging test should be carried out, carried out a checking discharging test every 2 years later, run 4 years later batteries, do a checking discharging test every year.But in the maintenance management work of reality, due to the restriction of various condition, the maintenance work of storage batteries of transformer substation is complicated, loaded down with trivial details and consuming time.The property the checked electric discharge maintenance work of every group storage battery at present approximately needs the three day time of two to three staff, before the property checked electric discharge, staff also needs to guarantee that equipment connection and normal operation, storage battery are in floating charge state, the overall process of the property checked electric discharge all requires that staff carries out uninterruptedly monitoring in 24 hours at the scene, takes time and effort.
Utility model content
The purpose of this utility model is to provide a kind of storage batteries of transformer substation remote core and discharges attending device to property, can solve the technical problem that storage batteries of transformer substation maintenance work takes time and effort.
For achieving the above object, the utility model have employed following technical scheme: a kind of storage batteries of transformer substation remote core to be discharged attending device to property, comprise batteries, storage battery on-Line Monitor Device, switch cubicle, charger, discharge instrument, switch operation device, described switch cubicle is mother, female throwing, charging, discharge switch, it is characterized in that: also comprise equipment management device, described storage battery on-Line Monitor Device is connected with batteries respectively with switch cubicle, described charger, discharge instrument, switch operation device is connected with switch cubicle respectively, described storage battery monitoring device, switch operation device, charger and discharge instrument are connected with the input of equipment management device respectively, equipment management device is connected with PC server by local area network (LAN), described PC server is connected with user terminal by local area network (LAN), by the long-range transmitting-receiving of the property checked electric discharge instruction, realize the remote operation and maintenance work to the electric discharge of the storage batteries of transformer substation property checked.
The storage batteries of transformer substation remote core that the utility model is announced to be discharged attending device to property, and described equipment management device is connected with PC server by Ethernet, and PC server passes through network and short message server and is connected with user terminal, and user terminal is user mobile phone.
The storage batteries of transformer substation remote core that the utility model is announced to be discharged attending device to property, described equipment management device comprises charge management module, electric discharge administration module, storage battery on-line monitoring device management module, data analysis management module, with PC server com-munication module, and the one-touch property the checked discharge module of remote auto/on-site manual;
Wherein, described Charge Management is, after battery discharging terminates, transfer the charging of three stages to, the first stage is constant current voltage limiting, after batteries pressure reaches certain set point, transfers second stage to and all fills, when charging current drops to 0.1I
10time, transfer phase III floating charge to, i.e. storage battery running status under normal circumstances, simultaneously the charging current of Real-time Obtaining charger and the group pressure of batteries;
Described electric discharge management is, storage battery discharges with 10 hours discharge rates, and when reaching discharging condition, electric discharge can stop; Described discharging condition stops voltage for group pressure reaches, reaches discharge capacity, reaches electric discharge duration, temperature/electric current alarm, monomer voltage reach lower limit, Real-time Obtaining discharge instrument is current simultaneously discharging current, load temperature and batteries pressure;
The equipment control of described storage battery on-line monitoring is, the voltage of single-unit storage battery in Real-time Collection discharge process, and the internal resistance value of storage battery under calculating current voltage, in order to the assessment of storage battery health status.
Described data analysis management is, presses according to current flow, group the state judging current batteries, and determines according to the data gathered the state that next step needs of batteries switch;
Described is that the data of collection, batteries state are uploaded to PC server in real time with PC server communication; When PC server issues electric discharge order, judge whether current batteries is in floating charge state, otherwise upload discharge condition false command; When PC server issues and stops electric discharge order, can switch be recovered, stop electric discharge;
The described one-touch property checked electric discharge is, when PC server issues the property checked electric discharge order or on-site manual star t-up discharge and current batteries meet the property checked discharging condition, control switch operating unit completes the switch motion flow process of discharge operation, then electric discharge order is issued to discharge instrument, start electric discharge; When reaching discharging condition or PC server issues stopping electric discharge order or on-site manual stopping electric discharge, control switch operating unit completes the switch motion flow process of charging operations, starts to charge.
Technique effect of the present utility model: PC server realizes long-range the issuing of the property checked electric discharge instruction (electric discharge is opened, stop order), the gathering, analyze, diagnose and back up of data, warning information and batteries state handover information are by network and short message server SMS notification user; Transport layer adopts Ethernet to communicate with PC server, achieves the long-range of instruction and issues the transmission with field data; Mechanical floor comprises switch operation device, charger, discharge instrument, storage battery on-Line Monitor Device, equipment monitoring apparatus; User only needs long-rangely to send instructions under PC server, and equipment monitoring apparatus intelligence can realize one-touch remote core and discharge to property, and meanwhile, field data is uploaded to PC server by equipment monitoring apparatus; The utility model is reasonable in design, easily implement; batteries state switch time (as electric discharge terminate, constant current charge turn all fill, all fill turn floating charge etc.); PC server automatically can be sent short messages and be reminded to user mobile phone; if any exception or fault in the course of work; system meeting autostop; the concurrent signal that is out of order; fault message is sent to user mobile phone simultaneously; staff also long-rangely can send instructions and switch batteries state under PC server is manual; really achieve automatic remote monitoring; time saving and energy saving, there is after popularization good economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment;
Fig. 2 is internal resistance unit theory diagram;
Fig. 3 collecting unit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, technical scheme disclosed in the utility model is described further:
As shown in Figure 1, storage batteries of transformer substation remote core to be discharged attending device to property, comprise batteries, switch cubicle, charger, discharge instrument, switch operation device, described switch cubicle is mother, female throwing, charging, discharge switch, also comprise storage battery on-Line Monitor Device and equipment management device, described storage battery on-Line Monitor Device is connected with batteries respectively with switch cubicle, described charger, discharge instrument, switch operation device is connected with switch cubicle respectively, described storage battery monitoring device, switch operation device, charger and discharge instrument are connected with the input of equipment management device respectively, equipment management device is connected with PC server by Ethernet, achieve the long-range of instruction and issue the transmission with field data, described PC server is connected with user terminal by local area network (LAN), the remote operation and maintenance work to the electric discharge of the storage batteries of transformer substation property checked is realized by user terminal.
Described user terminal, can carry out issuing of the remote command of switch, carries out remote core and discharges to property; Can the block diagram of displaying monomer voltage and internal resistance, check the health status of storage battery more intuitively; Can also query history record.
Described user terminal is mobile phone; described server is network and short message server; when Server remote receives the electric discharge start stop command that user terminal issues; complete the gathering of data, analyze, issue; set up the health status model of storage battery; (floating charge is turned as all filled during batteries transition state; electric discharge terminates); inform by short message can be sent from trend user mobile phone; note abnormalities in the course of work or fault time, automatically issuing and stopping electric discharge order, sending fault-signal and simultaneously send short message alarm to user mobile phone; more convenient, safety.
The above equipment management device has six large modules: (1), Charge Management (2), electric discharge manage (3), storage battery on-line monitoring equipment control (4), data analysis management (5), discharge with PC server communication (6), the one-touch property checked of remote auto/on-site manual.
Described Charge Management is, after battery discharging terminates, transfer the charging of three stages to, the first stage is constant current voltage limiting, after batteries pressure reaches certain set point, transfers second stage to and all fills, when charging current drops to 0.1I
10time, transfer phase III floating charge to, i.e. storage battery running status under normal circumstances, simultaneously the charging current of Real-time Obtaining charger and the group pressure of batteries.
Described electric discharge management is, storage battery discharges with 10 hours discharge rates, and when reaching discharging condition, electric discharge can stop; Described discharging condition stops voltage for group pressure reaches, reaches discharge capacity, reaches electric discharge duration, temperature/electric current alarm, monomer voltage reach lower limit, Real-time Obtaining discharge instrument is current simultaneously discharging current, load temperature and batteries pressure.
The equipment control of described storage battery on-line monitoring is, the voltage of single-unit storage battery in Real-time Collection discharge process, and the internal resistance value of storage battery under calculating current voltage, in order to the assessment of storage battery health status.Fig. 2 is internal resistance unit theory diagram, gather the voltage at constantan-made resistances two ends, receive AD through signal condition and carry out voltage acquisition, internal resistance unit is communicated by RS485 with between host computer, in accordance with MODBUS agreement, isolation scheme, isolate i2c between STM32F103RBT6 and AD and communicate, signal conditioning circuit carries out impedance transformation, dividing potential drop etc.Fig. 3 is collecting unit schematic diagram, and AD8628 is the amplifier of zero-drift type, and the imbalance of input and noise are very little, is applicable to high-precision application; AD7683 is the picking rate of 100K, can to 14 significance bits, and digital mouth is SPI, and isolates with ADUM1411 between MCU; ADM2577E is selected in 485 isolation.
Described data analysis management is, presses according to current flow, group the state judging current batteries, and determines according to the data gathered the state that next step needs of batteries switch.
Described is that the data of collection, batteries state are uploaded to PC server in real time with PC server communication; When PC server issues electric discharge order, judge whether current batteries is in floating charge state, otherwise upload discharge condition false command; When PC server issues and stops electric discharge order, can switch be recovered, stop electric discharge.
The described one-touch property checked electric discharge is, when PC server issues the property checked electric discharge order or on-site manual star t-up discharge and current batteries meet the property checked discharging condition, control switch operating unit completes the switch motion flow process of discharge operation, then electric discharge order is issued to discharge instrument, start electric discharge; When reaching discharging condition or PC server issues stopping electric discharge order or on-site manual stopping electric discharge, control switch operating unit completes the switch motion flow process of charging operations, starts to charge.
The switch motion flow process of described discharge operation is, bus connection switch is closed-and that > mother throws switch disconnections-> charge switch disconnection-> discharge switch is closed, switch has software and hardware and closes function, guarantees that switch is according to intended flow action.
The switch motion flow process of described charging operations is, discharge switch disconnection-> charge switch is closed-> mother throw switch closed-> bus connection switch cut-off switch has software and hardware interlock function, guarantees that switch is according to intended flow action.
As from the foregoing, the storage batteries of transformer substation remote core of the present embodiment to be discharged attending device to property, and by user terminal transmit-receive switch operational order, PC Server remote issues electric discharge start stop command, complete the gathering of data, analyze, issue, set up the health status model of storage battery; (floating charge is turned as all filled during batteries transition state; electric discharge terminates); inform by short message can be sent from trend user mobile phone; note abnormalities in the course of work or fault time; automatically issue and stop electric discharge order, send fault-signal and send short message alarm to user mobile phone simultaneously, realize storage batteries of transformer substation remote core property electric discharge attending device remote operation and maintenance; time saving and energy saving, accurately and timely.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.
Claims (3)
1. storage batteries of transformer substation remote core to be discharged attending device to property, comprise batteries, storage battery on-Line Monitor Device, switch cubicle, charger, discharge instrument, switch operation device, described switch cubicle is mother, female throwing, charging, discharge switch, it is characterized in that: also comprise equipment management device, described storage battery on-Line Monitor Device is connected with batteries respectively with switch cubicle, described charger, discharge instrument, switch operation device is connected with switch cubicle respectively, described storage battery monitoring device, switch operation device, charger and discharge instrument are connected with the input of equipment management device respectively, equipment management device is connected with PC server by local area network (LAN), described PC server is connected with user terminal by local area network (LAN), by the long-range transmitting-receiving of the property checked electric discharge instruction, realize the remote operation and maintenance work to the electric discharge of the storage batteries of transformer substation property checked.
2. storage batteries of transformer substation remote core according to claim 1 to be discharged attending device to property, it is characterized in that: described equipment management device is connected with PC server by Ethernet, PC server is connected with user terminal by network and short message server, and user terminal is user mobile phone.
3. storage batteries of transformer substation remote core according to claim 1 to be discharged attending device to property, it is characterized in that: described equipment management device comprises charge management module, electric discharge administration module, storage battery on-line monitoring device management module, data analysis management module, with PC server com-munication module, and the one-touch property the checked discharge module of remote auto/on-site manual;
Wherein, described Charge Management is, after battery discharging terminates, transfer the charging of three stages to, the first stage is constant current voltage limiting, after batteries pressure reaches certain set point, transfers second stage to and all fills, when charging current drops to 0.1I
10time, transfer phase III floating charge to, i.e. storage battery running status under normal circumstances, simultaneously the charging current of Real-time Obtaining charger and the group pressure of batteries;
Described electric discharge management is, storage battery discharges with 10 hours discharge rates, and when reaching discharging condition, electric discharge can stop; Described discharging condition stops voltage for group pressure reaches, reaches discharge capacity, reaches electric discharge duration, temperature/electric current alarm, monomer voltage reach lower limit, Real-time Obtaining discharge instrument is current simultaneously discharging current, load temperature and batteries pressure;
The equipment control of described storage battery on-line monitoring is, the voltage of single-unit storage battery in Real-time Collection discharge process, and the internal resistance value of storage battery under calculating current voltage, in order to the assessment of storage battery health status;
Described data analysis management is, presses according to current flow, group the state judging current batteries, and determines according to the data gathered the state that next step needs of batteries switch;
Described is that the data of collection, batteries state are uploaded to PC server in real time with PC server communication; When PC server issues electric discharge order, judge whether current batteries is in floating charge state, otherwise upload discharge condition false command; When PC server issues and stops electric discharge order, can switch be recovered, stop electric discharge;
The described one-touch property checked discharge module is, when PC server issues the property checked electric discharge order or on-site manual star t-up discharge and current batteries meet the property checked discharging condition, control switch operating unit completes the switch motion flow process of discharge operation, then electric discharge order is issued to discharge instrument, start electric discharge; When reaching discharging condition or PC server issues stopping electric discharge order or on-site manual stopping electric discharge, control switch operating unit completes the switch motion flow process of charging operations, starts to charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867290.5U CN204615507U (en) | 2014-12-31 | 2014-12-31 | Storage batteries of transformer substation remote core to be discharged attending device to property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867290.5U CN204615507U (en) | 2014-12-31 | 2014-12-31 | Storage batteries of transformer substation remote core to be discharged attending device to property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204615507U true CN204615507U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420867290.5U Expired - Fee Related CN204615507U (en) | 2014-12-31 | 2014-12-31 | Storage batteries of transformer substation remote core to be discharged attending device to property |
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| CN (1) | CN204615507U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786859A (en) * | 2016-12-12 | 2017-05-31 | 国网北京市电力公司 | Method for discharging storage batteries, device and system |
| CN106959395A (en) * | 2017-03-28 | 2017-07-18 | 国网浙江省电力公司温州供电公司 | It is a kind of can novel maintenance transformer station direct current system |
| CN107086636A (en) * | 2017-06-07 | 2017-08-22 | 深圳市华海联能科技有限公司 | Batteries verification property discharge system and method |
| CN109473740A (en) * | 2018-10-12 | 2019-03-15 | 国网浙江省电力有限公司信息通信分公司 | The charging/discharging thereof of battery remote maintenance equipment |
| CN109546236A (en) * | 2018-10-12 | 2019-03-29 | 国网浙江省电力有限公司信息通信分公司 | A kind of protection system of battery remote maintenance equipment |
| CN110794293A (en) * | 2019-09-23 | 2020-02-14 | 国网辽宁省电力有限公司丹东供电公司 | Method for detecting automatic nuclear capacity switch state of storage battery |
| CN110928226A (en) * | 2019-12-05 | 2020-03-27 | 国网河北省电力有限公司 | System and method for remotely switching on and off unattended terminal |
| CN111049245A (en) * | 2019-11-25 | 2020-04-21 | 国网浙江省电力有限公司湖州供电公司 | High-reliability direct-current power supply for transformer substation and detection method |
| CN112491101A (en) * | 2019-09-12 | 2021-03-12 | 北京国双科技有限公司 | Control method and system of storage battery pack, storage medium and electronic device |
| CN113030747A (en) * | 2021-02-05 | 2021-06-25 | 国网宁夏电力有限公司吴忠供电公司 | Station storage battery pack checking discharge test system |
-
2014
- 2014-12-31 CN CN201420867290.5U patent/CN204615507U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786859A (en) * | 2016-12-12 | 2017-05-31 | 国网北京市电力公司 | Method for discharging storage batteries, device and system |
| CN106959395A (en) * | 2017-03-28 | 2017-07-18 | 国网浙江省电力公司温州供电公司 | It is a kind of can novel maintenance transformer station direct current system |
| CN106959395B (en) * | 2017-03-28 | 2023-09-05 | 国网浙江省电力公司温州供电公司 | Transformer substation direct current system capable of being operated and maintained remotely |
| CN107086636A (en) * | 2017-06-07 | 2017-08-22 | 深圳市华海联能科技有限公司 | Batteries verification property discharge system and method |
| CN107086636B (en) * | 2017-06-07 | 2019-04-05 | 深圳市华海联能科技有限公司 | Battery group proof discharge system and method |
| CN109473740A (en) * | 2018-10-12 | 2019-03-15 | 国网浙江省电力有限公司信息通信分公司 | The charging/discharging thereof of battery remote maintenance equipment |
| CN109546236A (en) * | 2018-10-12 | 2019-03-29 | 国网浙江省电力有限公司信息通信分公司 | A kind of protection system of battery remote maintenance equipment |
| CN112491101A (en) * | 2019-09-12 | 2021-03-12 | 北京国双科技有限公司 | Control method and system of storage battery pack, storage medium and electronic device |
| CN110794293A (en) * | 2019-09-23 | 2020-02-14 | 国网辽宁省电力有限公司丹东供电公司 | Method for detecting automatic nuclear capacity switch state of storage battery |
| CN111049245A (en) * | 2019-11-25 | 2020-04-21 | 国网浙江省电力有限公司湖州供电公司 | High-reliability direct-current power supply for transformer substation and detection method |
| CN111049245B (en) * | 2019-11-25 | 2022-01-07 | 国网浙江省电力有限公司湖州供电公司 | High-reliability direct-current power supply for transformer substation and detection method |
| CN110928226A (en) * | 2019-12-05 | 2020-03-27 | 国网河北省电力有限公司 | System and method for remotely switching on and off unattended terminal |
| CN113030747A (en) * | 2021-02-05 | 2021-06-25 | 国网宁夏电力有限公司吴忠供电公司 | Station storage battery pack checking discharge test system |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20211231 |