CN205484600U - 10kV intelligence switch cabinet automatic test system - Google Patents
10kV intelligence switch cabinet automatic test system Download PDFInfo
- Publication number
- CN205484600U CN205484600U CN201620114680.4U CN201620114680U CN205484600U CN 205484600 U CN205484600 U CN 205484600U CN 201620114680 U CN201620114680 U CN 201620114680U CN 205484600 U CN205484600 U CN 205484600U
- Authority
- CN
- China
- Prior art keywords
- test
- equipment under
- voltage
- generator
- data acquisition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a 10kV intelligence switch cabinet automatic test system, include through net gape or serial ports and the industrial computer of equipment under test communication and the data collection station who is connected with the industrial computer the data collection station output is connected with voltage electric current collector, little current generator, big current generator, voltage generator and equipment under test respectively, and industrial computer net gape or serial ports pass through order wire and power distribution terminal net gape or serial port connection, realizes detecting the power distribution terminal communication protocol. After the cubical switchboard test is accomplished, the automatic generate test report of test system to a detectability reduces the manpower and materials cost that the not enough of the manual test of traditional approach has been overcome to test record's inquiry function, with intelligent means, procedure flow control mode, has improved the distribution cubical switchboard is provided.
Description
Technical field
The present invention relates to power distribution automation field, particularly relate to 10kV intelligent switchboard Auto-Test System.
Background technology
Urban power distribution network power supply reliability directly affects user power utilization safety.Reliable electricity consumption, improves distribution network reliability and be unable to do without intelligent switch (cabinet) stable operation, and intelligent switchboard is the basis realizing power distribution automation simultaneously.
Equipment manufacturer or power generation department according to country and industry standard, further specification intelligent switchboard test method, are effectively improved intelligent switchboard power of test, for the purpose of realizing intelligent switchboard quality management and control, needed for being also situation.At present, produce 10kV intelligent switchboard producer numerous, the producer producing panel switches is usually the condition not possessing production distribution terminal, the producer producing distribution terminal is usually the condition not possessing production panel switches, and two coordinative composition of equipments may exist electric automatization interface mismatch problem when using.The quality of most manufacturer production 10kV intelligent switchboards is very different, and limited to the automatic detection means of intelligent switchboard, and great majority use semi-automatic or test manually.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of 10kV intelligent switchboard Auto-Test System, which raises the detection efficiency of distribution switchgear cabinet, saved manpower and materials cost.
The technical solution adopted for the present invention to solve the technical problems is:
10kV intelligent switchboard Auto-Test System, it is characterized in that: include that the data acquisition unit with the industrial computer of equipment under test communication and being connected with industrial computer by network interface or serial ports, described data acquisition unit outfan are connected with voltage x current harvester, small area analysis generator, strong current generator, voltage generator and equipment under test respectively, described small area analysis generator, described strong current generator and voltage generator are connected with equipment under test input respectively, and described equipment under test outfan is connected with described voltage x current harvester；
Described industrial computer, for sending test instruction and parameter to described data acquisition unit, receives the digital signal of described voltage x current harvester feedback and carries out data analysis and compare, providing testing scheme for equipment under test, generate test report and manage storage；
Described data acquisition unit, for test instruction occurring to small area analysis generator, strong current generator, voltage generator, is automatically adjusted exciting current, obtains remote signalling and the remote control equipment under test of equipment under test；
Described voltage x current harvester, for the voltage and current that small area analysis generator, strong current generator, voltage generator produce is converted into the alternating voltage and electric current being proportional to, and it is transferred to described data acquisition unit, provides data analysis for switch motion execution with test process；
Described small area analysis generator is also connected with data acquisition unit, is used for producing excitation exchange small area analysis, provides test small area analysis signal for equipment under test；
Described strong current generator is also connected with data acquisition unit, is used for producing excitation AC great current, provides for equipment under test and tests big current signal；
Described voltage generator is also connected with data acquisition unit, is used for producing excitation alternating voltage, provides test voltage signal for equipment under test.
As the improvement of technique scheme, also including testing attention device, described test attention device is connected with industrial computer, for reporting to the police at equipment under test test process.
As the improvement of technique scheme, described industrial computer is also connected with barcode scanner and display.
As the improvement of technique scheme, described industrial computer includes testing scheme preset unit and communication protocol test cell.
As the improvement of technique scheme, described industrial computer also includes automatic testing equipment.
As the improvement of technique scheme, described industrial computer and equipment under test use communication protocol IEC60870-5-101 104.
As the improvement of technique scheme, described data acquisition unit includes that data process plate and data acquisition control plate.
Improvement as technique scheme, data process plate and are provided in PCI slot on industrial control computer mainboard, described data process plate 21 and pass through serial ports and data acquisition control board communications, and described data acquisition control plate input is connected with equipment under test and voltage x current harvester respectively.
As the improvement of technique scheme, described serial ports uses DB25 industrial-controlled general line.
Beneficial effects of the present invention has: one 10kV intelligent switchboard Auto-Test System of the present invention; intelligent switchboard Auto-Test System is tested automatically according to testing scheme set in advance, it is achieved to tested switch cubicle high-low voltage motion detection, mechanical property detection, alternate protection detection, zero-sequenceprotection detection, fast tripping protection detection etc..According to different test events, data acquisition unit be automatically adjusted big small area analysis generator and the driving source of voltage generator, thus control current feedback circuit output and voltage generator output size, by voltage x current harvester, switch cubicle input voltage and switch cubicle input current are sampled and recorded ripple, one or two interoperation characteristic curve record ripples of switch cubicle can be detected through programmed algorithm simultaneously, have collection switch cabinet body information and remote switch cabinet divide close a floodgate, it is achieved the Function detection of intelligent switchboard.Industrial computer network interface or serial ports are connected with equipment under test network interface or serial ports by order wire, it is achieved to equipment under test IEC60870-5-101 104 communication protocols detect.After equipment under test has been tested, test system automatically generates test report, to provide the query function of test record, overcome the deficiency of traditional method manual test, with intelligent means, program flow control mode, improve the power of test of distribution switchgear cabinet, reduce manpower and materials cost.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described, wherein:
Fig. 1 is present system structured flowchart；
Fig. 2 is that the small area analysis generator of the embodiment of the present invention is automatically adjusted fundamental diagram；
Fig. 3 is that the strong current generator of the embodiment of the present invention is automatically adjusted fundamental diagram；
Fig. 4 is that the voltage generator of the embodiment of the present invention is automatically adjusted fundamental diagram.
Detailed description of the invention
See Fig. 1,10kV intelligent switchboard Auto-Test System of the present invention, it is characterized in that: include industrial computer 1, data acquisition unit 2, voltage x current harvester 3, small area analysis generator 4, strong current generator 5, voltage generator 6, equipment under test 7, test attention device 8, barcode scanner 9 and display 10
Described industrial computer 1, for sending test instruction and parameter to described data acquisition unit 2, receive the digital signal of described voltage x current harvester 3 feedback and carry out data analysis and compare, testing scheme being provided for equipment under test 7, generates test report and preserve and manage storage；Described industrial computer 1 is connected and passes through network interface or serial ports and equipment under test 7 communication with data acquisition unit 2, test attention device 8, for by sending test instruction and parameter to described data acquisition unit 2, the digital signal receiving described harvester 3 feedback carries out data analysis and compares, and ultimately produces and preserve the test report of equipment under test 7；Described data acquisition unit 2 respectively with voltage x current harvester 3, small area analysis generator 4, strong current generator 5, voltage generator 6, be used for gathering equipment under test voltage 7 electric current, be automatically adjusted exciting current size and driving voltage size；Described voltage x current harvester 3 is connected with data acquisition unit 2, is proportional to for being converted into, and alternating voltage and electric current that amplitude is relatively low be transferred to described data acquisition unit 2, provides data analysis for switch motion execution with test process；Described small area analysis generator 4 is connected with data acquisition unit 2 and equipment under test 7 respectively, is used for producing excitation exchange small area analysis, provides test small area analysis signal for equipment under test 7；Described strong current generator 5 is connected with data acquisition unit 2 and equipment under test 7 respectively, is used for producing excitation AC great current, provides for equipment under test 7 and tests big current signal；Described voltage generator 6 is connected with data acquisition unit 2 and equipment under test 7 respectively, is used for producing excitation alternating voltage, provides working power to input for equipment under test 7；Described test attention device 8 is connected with industrial computer 1, in equipment under test test process warning signal.
Testing scheme is placed to described industrial computer 1, and industrial computer 1 is provided with management software, and this management software provides human-computer interaction interface, automatically tests according to testing scheme set in advance.Communication protocol test belongs to the software reusage ingredient of industrial computer 1, the stipulations of described industrial computer 1 and equipment under test 7 communication be IEC60870-5-101 104, communication protocol test is connected with equipment under test 7 network interface or serial ports by data wire.Described data acquisition unit 2 includes that data process plate and data acquisition control plate, data process plate and are mounted in PCI slot on described industrial computer 1 mainboard, it is connected with the serial ports of data acquisition control plate by 2 DB25 industrial-controlled general lines, analog quantity is converted to digital quantity, completes the conversion of data A/D and digital independent.
By to equipment under test intake collection, the amount of outputing remote pilot, detect one or two interoperation characteristic curves of panel switches.Described voltage x current harvester 3 is connected by cable with described data acquisition unit 2, the mode such as voltage transformer, current transformer of employing is converted into the relatively low alternating voltage of the amplitude being proportional to and alternating current is transferred to the data acquisition control plate of described data acquisition unit 3, provides data analysis for switch motion execution with test process.Switch motion curve gathers voltage, electric current based on Fourier space application, generates after software filtering interference signals.
Described small area analysis generator 4, described strong current generator 5, described voltage generator 6 are all connected by cable with described data acquisition unit 2; by automatic testing equipment 12 programme-control and digital quantity, intake collection; and needed for providing motion test for equipment under test, exchange high-low voltage, exchange small area analysis, High-current output and On-off signal test movement time and output switch parameter, mainly complete the test of switch on/off electric high-low pressure, zero-sequenceprotection functional test, the test of alternate defencive function and fast tripping protection functional test.
Described small area analysis generator 4, described strong current generator 5, described voltage generator 6 all can apply voltage and the magnitude of current to tested switch cubicle, described voltage x current harvester 3 cable connects, for gathering electric current and the voltage of voltage generator output of current feedback circuit output, provide the analog current in range ability, voltage for data acquisition unit 3.
Described small area analysis generator 4 is connected by controlling cable with equipment under test 7, applies secondary current signal at panel switches secondary side, tests for zero-sequenceprotection.10kV intelligent switchboard detecting system has small area analysis generator, its current value range 0.01A ~ 10A(resolution 1mA), current value range 10A ~ 30A(resolution 10mA)；There is zero-sequenceprotection detection function, exportable current value range 0.01A ~ 10A(resolution 1mA simultaneously), current value range 10A ~ 30A(resolution 10mA).Equipment under test gather zero sequence current signal, and by comparing with protection seting value after, switch protection trip, be used for detecting terminal current sampling precision.
Described strong current generator 5 is connected by controlling cable with equipment under test 7; primary current signal is applied in panel switches side; for crossing stream, fast tripping protection test; 10kV intelligent switchboard detecting system has overcurrent protection detection function; exportable current range 0A ~ 1000A, and fast conducting or the cut-out of big electric current can be realized.The big current signal of distribution terminal harvester, and by protection seting value relatively after, switch protection trips, and is used for detecting distribution terminal sampling precision and primary side current transformer precision.
Described voltage generator 6 is connected by controlling cable with equipment under test 7, the power supply input of secondary system side is provided for intelligent switchboard, detection intelligent switchboard is when high-low voltage power source inputs, and whether switch cubicle can the most reliably perform electric operating separating brake, closing operation.
Described test attention device 8 is connected by cable with described industrial computer 1, and when abnormal alarm occurs in equipment under test test process, attention device amber light is glittering；When equipment under test has been tested, attention device green light is glittering；When equipment under test test event is defective, attention device red colored lamp is glittering, configures buzzer simultaneously.
See Fig. 2, small area analysis generator is automatically adjusted operation principle: described industrial computer 1 is connected with described data acquisition unit 2, described industrial computer 1 sends test instruction and parameter to described data acquisition unit 2, and the digital signal receiving described harvester 2 feedback carries out data analysis and compares.Described voltage x current harvester 3 is connected with described data acquisition unit 2, equipment under test 7 respectively, is used for gathering excitation small area analysis signal, it is achieved be automatically adjusted electric current.Described small area analysis generator 4 is connected with described data acquisition unit 2, equipment under test 7 respectively, applies small area analysis amount to equipment under test 7, for zero-sequenceprotection detection, automation interface detection etc..
See Fig. 3, strong current generator is automatically adjusted operation principle: described industrial computer 1 is connected with described data acquisition unit 2, described industrial computer 1 sends test instruction and parameter to described data acquisition unit 2, and the digital signal receiving described harvester 2 feedback carries out data analysis and compares.Described voltage x current harvester 3 is connected with described data acquisition unit 2, equipment under test 7 respectively, for gathering the big current signal of excitation, big electric current is converted into small area analysis signal, and small area analysis is fed back to data acquisition unit 2, according to detection project settings current value, it is achieved be automatically adjusted electric current.Described strong current generator 5 is connected with described data acquisition unit 2, equipment under test 7 respectively; for producing the biggest electric current of excitation; maximum current value can reach 1000A; predominantly intelligent switchboard primary side current transformer provides test current signals, it is achieved alternate protection detection, fast tripping protection detection, automation interface detection etc..
See Fig. 4, voltage generator is automatically adjusted operation principle: described industrial computer 1 is connected with described data acquisition unit 2, described industrial computer 1 sends test instruction and parameter to described data acquisition unit 2, and the digital signal receiving described harvester 2 feedback is analyzed and compares.Described voltage x current harvester 3 is connected with described data acquisition unit 2, equipment under test 7 respectively, is used for gathering driving voltage signal, according to detection project settings current value, it is achieved be automatically adjusted voltage input size.Described voltage generator 6 is connected with described data acquisition unit 2, equipment under test 7 respectively, for producing reference voltage (80% ~ 120%), predominantly intelligent switchboard secondary side input high-low voltage input range, it is achieved electronic high-low pressure divide-shut brake remote-controlled test, the power range detection test etc. of automatization terminal.
Owing to intelligent switchboard is of a great variety, according to the different types of switch cubicle of main flow producer, the testing scheme of equipment under test can be set.Intelligent switchboard Auto-Test System is tested automatically according to testing scheme set in advance, it is achieved to equipment under test alternate protection detection, zero-sequenceprotection detection, fast tripping protection detection, automation interface detection etc..Data acquisition unit is according to different test events, data acquisition control plate control be automatically adjusted big small area analysis generator and the driving source of voltage generator, but control the magnitude of current and the voltage of tested switch cubicle, by voltage x current harvester, switch cubicle input voltage and switch cubicle input current are sampled and recorded ripple, switch action characteristic curve can be detected through programmed algorithm, it is achieved tested switch cubicle mechanical property detects simultaneously.Industrial computer network interface or serial ports are connected with equipment under test network interface or serial ports by order wire, it is achieved to equipment under test IEC60870-5-101 104 communication protocols detect.After equipment under test has been tested, test system automatically generates test report, and with the query function of offer test record, after testing extremely or having tested occur when test process in test system simultaneously, test attention device flashes different warning lamp color automatically.
One 10kV intelligent switchboard Auto-Test System scheme of the present invention, improves intelligent switchboard detection efficiency and strengthens intelligent switchboard quality testing ability.Owing to intelligent switchboard is of a great variety, according to the different types of switch cubicle of main flow producer, the testing scheme of equipment under test can be set.Intelligent switchboard Auto-Test System is tested automatically according to testing scheme set in advance, voltage input and the electric current input of tested switch cubicle are controlled by industrial computer according to different test events, by voltage x current harvester, switch cubicle input voltage and switch cubicle input current are sampled and recorded ripple, simultaneously through programmed algorithm display switch acting characteristic curve in man machine interface, it is achieved the Function detection of intelligent switchboard.Industrial computer network interface or serial ports are connected with distribution terminal network interface or serial ports by order wire, it is achieved to distribution terminal IEC60870-5-101 104 communication protocols detect.After switch cubicle has been tested, test system automatically generates test report, and to provide the query function of test record, after testing extremely or having tested occur when test process in simultaneity factor, test attention device flashes different warning lamp color automatically.
The above, the simply better embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches the technique effect of the present invention with any same or similar means, all should belong to protection scope of the present invention.
Claims (9)
1.10kV intelligent switchboard Auto-Test System, it is characterized in that: include by network interface or serial ports and the industrial computer (1) of equipment under test (7) communication and the data acquisition unit (2) being connected with industrial computer (1), described data acquisition unit (2) outfan respectively with voltage x current harvester (3), small area analysis generator (4), strong current generator (5), voltage generator (6) and equipment under test (7) connect, described small area analysis generator (4), described strong current generator (5) and voltage generator (6) are connected with equipment under test (7) input respectively, described equipment under test (7) outfan is connected with described voltage x current harvester (3)；
Described industrial computer (1), for sending test instruction and parameter to described data acquisition unit (2), receive digital signal that described voltage x current harvester (3) feeds back and carry out data analysis and compare, testing scheme being provided for equipment under test (7), generates test report and manage storage；
Described data acquisition unit (2), for test instruction occurring to small area analysis generator (4), strong current generator (5), voltage generator (6), is automatically adjusted exciting current, obtains remote signalling and the remote control equipment under test (7) of equipment under test (7)；
Described voltage x current harvester (3), for the voltage and current that small area analysis generator (4), strong current generator (5), voltage generator (6) produce is converted into the alternating voltage and electric current being proportional to, and it is transferred to described data acquisition unit (2), provides data analysis for switch motion execution with test process；
Described small area analysis generator (4) is also connected with data acquisition unit (2), is used for producing excitation exchange small area analysis, provides test small area analysis signal for equipment under test (7)；
Described strong current generator (5) is also connected with data acquisition unit (2), is used for producing excitation AC great current, provides for equipment under test (7) and tests big current signal；
Described voltage generator (6) is also connected with data acquisition unit (2), is used for producing excitation alternating voltage, provides test voltage signal for equipment under test (7).
10kV intelligent switchboard Auto-Test System the most according to claim 1, it is characterised in that also including testing attention device (8), described test attention device (8) is connected with industrial computer (1), for reporting to the police at equipment under test (7) test process.
10kV intelligent switchboard Auto-Test System the most according to claim 1, it is characterised in that described industrial computer (1) is also connected with barcode scanner (9) and display (10).
10kV intelligent switchboard Auto-Test System the most according to claim 1, it is characterised in that described industrial computer (1) includes testing scheme preset unit (11) and communication protocol test cell (13).
10kV intelligent switchboard Auto-Test System the most according to claim 1, it is characterised in that described industrial computer (1) also includes automatic testing equipment (12).
10kV intelligent switchboard Auto-Test System the most according to claim 1, it is characterised in that described industrial computer (1) and equipment under test (7) use communication protocol IEC60870-5-101 104.
10kV intelligent switchboard Auto-Test System the most according to claim 1, it is characterised in that described data acquisition unit (2) includes that data process plate (21) and data acquisition control plate (22).
10kV intelligent switchboard Auto-Test System the most according to claim 4, it is characterized in that, data process plate (21) and are provided in PCI slot on industrial computer (1) mainboard, described data are processed plate (21) and are communicated with data acquisition control plate (22) by serial ports, and described data acquisition control plate (22) input is connected with equipment under test (7) and voltage x current harvester (3) respectively.
10kV intelligent switchboard Auto-Test System the most according to claim 5, it is characterised in that described serial ports uses DB25 industrial-controlled general line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620114680.4U CN205484600U (en) | 2016-02-04 | 2016-02-04 | 10kV intelligence switch cabinet automatic test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620114680.4U CN205484600U (en) | 2016-02-04 | 2016-02-04 | 10kV intelligence switch cabinet automatic test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205484600U true CN205484600U (en) | 2016-08-17 |
Family
ID=56673819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620114680.4U Withdrawn - After Issue CN205484600U (en) | 2016-02-04 | 2016-02-04 | 10kV intelligence switch cabinet automatic test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205484600U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589002A (en) * | 2016-02-04 | 2016-05-18 | 珠海许继电气有限公司 | 10 kV intelligent switch cabinet automatic testing system |
| CN106680642A (en) * | 2017-03-24 | 2017-05-17 | 浙江群力电气有限公司 | Power-on test stand system for switch cabinets |
| CN107144756A (en) * | 2017-06-29 | 2017-09-08 | 东莞市广安电气检测中心有限公司 | Switch cubicle test device |
| CN107589331A (en) * | 2017-10-16 | 2018-01-16 | 国网河南省电力公司新乡供电公司 | A kind of test device for relay protection |
| CN110261764A (en) * | 2019-06-10 | 2019-09-20 | 浙江华电器材检测研究所有限公司 | A kind of one or two complete on-pole switch integrated debugging methods |
-
2016
- 2016-02-04 CN CN201620114680.4U patent/CN205484600U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589002A (en) * | 2016-02-04 | 2016-05-18 | 珠海许继电气有限公司 | 10 kV intelligent switch cabinet automatic testing system |
| CN105589002B (en) * | 2016-02-04 | 2019-02-12 | 珠海许继电气有限公司 | 10kV intelligent switchboard Auto-Test System |
| CN106680642A (en) * | 2017-03-24 | 2017-05-17 | 浙江群力电气有限公司 | Power-on test stand system for switch cabinets |
| CN107144756A (en) * | 2017-06-29 | 2017-09-08 | 东莞市广安电气检测中心有限公司 | Switch cubicle test device |
| CN107589331A (en) * | 2017-10-16 | 2018-01-16 | 国网河南省电力公司新乡供电公司 | A kind of test device for relay protection |
| CN107589331B (en) * | 2017-10-16 | 2024-04-05 | 国网河南省电力公司新乡供电公司 | Relay protection testing device |
| CN110261764A (en) * | 2019-06-10 | 2019-09-20 | 浙江华电器材检测研究所有限公司 | A kind of one or two complete on-pole switch integrated debugging methods |
| CN110261764B (en) * | 2019-06-10 | 2021-12-24 | 浙江华电器材检测研究所有限公司 | Integrated debugging method for primary and secondary complete column switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205484600U (en) | 10kV intelligence switch cabinet automatic test system | |
| CN202333989U (en) | Concentrated monitoring and managing system of power distribution terminals | |
| CN101738565B (en) | Adaptive fault indicator | |
| CN104849581A (en) | System and method for monitoring combined test of over-current overload protective device | |
| CN103529417A (en) | Automatic detection system for fault indicators for distributing line | |
| CN202975216U (en) | Automatic collector test tool system | |
| CN202197145U (en) | Intelligent dual-power automatic transfer switch | |
| CN110927447A (en) | Multi-core-modularization-based station area six-branch loss monitoring device and monitoring method | |
| CN202737580U (en) | Intelligent power distribution switch equipment | |
| CN103235217B (en) | Dual protection act consistance monitoring device and monitoring method | |
| CN102075015B (en) | Towline high voltage direct current (DC) power supply for geophysical exploration | |
| CN103514733A (en) | Centralized meter reading terminal for realization of power distribution and power utilization information collection | |
| CN101951022A (en) | Intelligent power distribution method and system | |
| CN201374500Y (en) | Intelligent power distribution cabinet | |
| CN105513903B (en) | A kind of breaker debugging platform | |
| CN107632198B (en) | Dual-power electric quantity acquisition device and application method thereof | |
| CN103441725A (en) | System for monitoring and controlling grounding currents of transformer core | |
| CN105589002B (en) | 10kV intelligent switchboard Auto-Test System | |
| CN102130505A (en) | High-voltage switch controller with metering function | |
| CN210327143U (en) | Automatic field test device for multi-state feeder | |
| CN204287348U (en) | A kind of voltage-time type feeder automation filed detection system | |
| CN202009265U (en) | High-voltage switch controller with metering function | |
| CN202522638U (en) | Grid failure intelligent identification device | |
| CN110198077A (en) | Distribution terminal control method based on image recognition ring network cabinet state acquisition | |
| CN201402973Y (en) | Protective device for power supply lines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20190212 |