CN206164218U - Join in marriage net line fault control terminal - Google Patents
Join in marriage net line fault control terminal Download PDFInfo
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- CN206164218U CN206164218U CN201621264648.0U CN201621264648U CN206164218U CN 206164218 U CN206164218 U CN 206164218U CN 201621264648 U CN201621264648 U CN 201621264648U CN 206164218 U CN206164218 U CN 206164218U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to a join in marriage net line fault control terminal, including central processing unit and connect central processing unit's data input return circuit and output circuit respectively, the data input return circuit is including analog quantity acquisition circuit and division income volume acquisition circuit, analog quantity acquisition circuit is to real -time joining in marriage the voltage data of net line switching both sides, cable side and generating line side and joining in marriage net twine way current data of gathering of central processing unit input, open income volume acquisition circuit to the real -time switching value input data who respectively joins in marriage the net twine way who gathers of central processing unit input, central processing unit receives voltage data, circuit current data and switching value input data to export control signal according to voltage data, circuit current data and switching value input data to output circuit, output circuit is including relay output circuit, relay output circuit receives control signal to the join in marriage break -make of netting line -breaker or load switch that with relay output circuit be connected is controlled according to control signal.
Description
Technical field
The utility model is related to technical field of electric power, more particularly to a kind of distribution line Fault Control terminal.
Background technology
At present in the distribution automation terminal equipment for using in a large number, feed line automatization terminal (FTU), distribution can be included certainly
Dynamicization detection and control terminal (DTU), boundary switch controller, microcomputer protective relay device, cable fault indicator etc., these equipment pair
In realize Distribution Network Failure quickly isolate, Accident prevention expand, improve power supply reliability, ensure that power network safety operation is served
Critical effect.
And above-mentioned distribution automation terminal functions of the equipments are single, boundary switch controller and protective relaying device can only be applied
The automatic excision or isolation of failure are realized on branch line；Distribution automation detection and control terminal (DTU) can only realize event by main website
Phragma from and self-healing；Cable fault indicator can only carry out fault location；Feed line automatization terminal (FTU) is although can apply to
Ring network power supply circuit realizes the automatism isolation of failure and self-healing, but necessarily requires transformer station's outlet protection to possess secondary reclosing work(
Energy.
During realization, inventor has found that at least there are the following problems in conventional art：Because Distribution Network Frame structure compares
Complicated and frequently change, and boundary switch controller and protective relaying device can be only applied to realize cutting automatically for failure on branch line
Except or isolation, therefore when Distribution Network Frame structure change, will result in distribution automation terminal equipment cannot use.
Utility model content
Based on this, it is necessary to for the problem that the terminal device in Distribution Network Frame structure change cannot be used, there is provided a kind of
Distribution line Fault Control terminal.
To achieve these goals, the embodiment of technical solutions of the utility model is：
There is provided a kind of distribution line Fault Control terminal, including central processing unit and connect central processing unit respectively
Data input loop and output loop；
Data input loop, including analog quantity acquisition circuit and intake Acquisition Circuit；Analog quantity acquisition circuit is to central authorities
The voltage data and distribution line electric current of the distribution line switch both sides, cable side and bus bar side of processor input Real-time Collection
Data；Intake Acquisition Circuit is input into the On-off signal data of each distribution line of Real-time Collection to central processing unit；
Central processing unit receiving voltage data, line current data and On-off signal data, and according to voltage data, line
Road current data and On-off signal data are to output loop output control signal；
Output loop, including outputting circuit for relay；Outputting circuit for relay receives control signal, and according to control signal
Distribution line breaker or the break-make of on-load switch that control is connected with outputting circuit for relay.
Above-mentioned technical proposal has the advantages that：
The utility model distribution line Fault Control terminal, can solve the problems, such as terminal versatility, and by control netting twine is matched somebody with somebody
Circuit breaker or on-load switch, the Fault Isolation on the spot for realizing multiple distribution automation terminal equipment is collected with self-healing, using main website
In carry out Fault Isolation and self-healing or carry out fault location；Ensure in Distribution Network Frame structure change, it is also possible to using multiple
Terminal device.The utility model highly versatile, can pass through the break-make of control breaker or on-load switch in multiple-working mode
(for example voltage x current type, voltage-time type, demarcation circuit breaker type, demarcation load switch type, data transmission unit type, failure refer to
Show the mode of operations such as type, relay protection type) between switch over, so as to adapt to the change of Distribution Network Frame structure.
Description of the drawings
By being more particularly described for the preferred embodiment of the present utility model shown in accompanying drawing, it is of the present utility model on address
Other purposes, feature and advantage will become more fully apparent.Identical reference indicates identical part in whole accompanying drawings, and
Not deliberately by actual size equal proportion scaling drafting accompanying drawing, it is preferred that emphasis is illustrate purport of the present utility model.
Fig. 1 is the structural representation of the utility model distribution line Fault Control terminal embodiment 1；
Fig. 2 is the structural representation of the specific embodiment of the utility model distribution line Fault Control terminal one.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.First-selected embodiment of the present utility model is given in accompanying drawing.But, the utility model can come in many different forms real
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open content more thorough comprehensive.
It should be noted that when an element is considered as " connection " another element, it can be directly to separately
One element and it is in combination be integrated, or may be simultaneously present centering elements.It is term as used herein " one end ", " another
One end " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technology used herein and scientific terminology are led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limiting the utility model.Term as used herein " and/or " include
The arbitrary and all of combination of one or more related Listed Items.
The utility model distribution line Fault Control terminal embodiment 1：
In order to solve the problems, such as that terminal device cannot be used in Distribution Network Frame structure change, the utility model provides one
Plant distribution line Fault Control terminal embodiment 1；Fig. 1 is the knot of the utility model distribution line Fault Control terminal embodiment 1
Structure schematic diagram；As shown in figure 1, central processing unit 110 can be included and connect the data input loop of central processing unit respectively
120 and output loop 130；
Data input loop 120, including analog quantity acquisition circuit 122 and intake Acquisition Circuit 124；Analog acquisition electricity
Road 122 to central processing unit 110 be input into the distribution line switch both sides of Real-time Collection, the voltage data of cable side and bus bar side with
And distribution line current data；Intake Acquisition Circuit 124 is input into each distribution line of Real-time Collection to central processing unit 110
On-off signal data；
The receiving voltage data of central processing unit 110, line current data and On-off signal data, and according to voltage number
According to, line current data and On-off signal data to the output control signal of output loop 130；
Output loop 130, including outputting circuit for relay 132；Outputting circuit for relay 132 receives control signal, and root
The distribution line breaker being connected with outputting circuit for relay according to control signal control or the break-make of on-load switch.
Specifically, during the utility model distribution line Fault Control terminal embodiment 1 can be applied press ring main unit or
On on-pole switch, for being controlled to medium voltage switchgear equipment, automatic fault isolation, self-healing or positioning are realized.In a tool
In the example of body, the utility model distribution line Fault Control terminal embodiment 1 may be installed the different location of distribution line, bag
Include overhead transmission line either cable run, ring network power supply circuit or single radial line and branched line, small resistance grounding system or
On person's arc suppression coil earthing system, breaker or on-load switch.Can be new by this practicality by existing computer programming
Type distribution line Fault Control terminal embodiment 1 is configured to voltage x current pattern formula, voltage-time type pattern, DTU patterns, failure
Indicator modes, demarcation load switch pattern (being commonly called as on-load switch dog), demarcation circuit breaker pattern (being commonly called as breaker dog), relay
Protected mode.Both the isolation on the spot and self-healing of failure be capable of achieving, main website hubbed mode can have been passed through again and is realized the isolation of failure and oneself
More or set up fault location system.
In a specific embodiment, also including one end connection data input loop, other end connection central processing unit
Memory；Memory includes program storage, data storage and fixed value memory；
In a specific embodiment, program storage is FLASH (Flash Memory), data storage is RAM
(Random-Access Memory：Random access memory)；Fixed value memory EEPROM (Electrically Erasable
Programmable Read-Only Memory：EEPROM).
Specifically, memory can include program storage, data storage, fixed value memory；It is respectively used to difference
The data storage of type and purposes, so as to improve PDR of the present utility model.
In a specific embodiment, analog quantity acquisition circuit, intake Acquisition Circuit and outputting circuit for relay
Respectively central processing unit is connected by data/address bus.
Specifically, data input loop of the present utility model, output loop and central processing unit can using CPU (in
Central processor：Central Processing Unit) connected mode of digital circuit is attached.
In a specific embodiment, also including the clock circuit of connection central processing unit；Clock circuit is clock core
Piece.
Specifically, the clock chip is high precision clock chip, can to year, month, day, Sunday, when, minute, second enters
The real-time timing of row.
In a specific embodiment, switch power module can also be included.
Specifically, switch power module is used to give the utility model each module for power supply, can provide including 5V and 24V
Supply voltage.I.e. terminal is powered can be provided by high-performance wide scope Switching Power Supply.
In a specific embodiment, analog quantity acquisition circuit include connection central processing unit analog-digital converter and
Connect multiple voltage transformers and multiple current transformers of analog-digital converter respectively.
Specifically, input circuit is divided into analog quantity and intake, and analog acquisition has switch both sides cable side and bus
A, B, C three-phase voltage of side, residual voltage and A, B, C three-phase current, zero-sequence current, outside high voltage by inside PT (i.e.
Voltage transformer) low-voltage is converted into, then it is transferred directly to analog-digital converter and is acquired.
In a specific embodiment, also including the first photoisolator of connection intake Acquisition Circuit；First light
The input connection central processing unit of electric isolator, output end connect each distribution line switch-side.
Specifically, intake collection can have 12 way switch amounts to be input into.First photoisolator can realize it is anti-interference,
Without electrical link between ensureing input and exporting, but contacted by optical signal, therefore ordinary electromagnetic interference is new to this practicality
The correlation signal transmission process of type does not result in impact.
In a specific embodiment, also including the second photoisolator of connection outputting circuit for relay；Second light
The input connection central processing unit of electric isolator, output end connect each breaker or on-load switch.
Specifically, output loop can include relay output par, c and communications portion, and relay output is respectively electricity
Gas is anti-jump, protect combined floodgate, trip protection, remote control combined floodgate, remote control tripping operation.I.e. by the second photoisolator control each breaker or
The break-make of on-load switch come realize electric trip-preventing, protection combined floodgates, trip protection, remote control combined floodgate, remote control trip.
In a specific embodiment, output loop also includes the communication unit of connection central processing unit；Communication unit
Including RS485 communication modules and ethernet communication module.
Specifically, communications portion can include RS485 communication interfaces and all the way ethernet interface all the way.
In a specific embodiment, central processing unit is 32 single-chip microcomputers.
Specifically, the utility model can pass through the current and voltage data process that 32 high-speed microprocessors realize correlation.
The utility model distribution line Fault Control terminal embodiment 1, can solve the problems, such as terminal versatility, by control
Distribution line breaker or on-load switch, realize Fault Isolation on the spot and self-healing, the employing of multiple distribution automation terminal equipment
Main website is concentrated to carry out Fault Isolation and self-healing or carries out fault location；Ensure in Distribution Network Frame structure change, it is also possible to make
Use multiple terminal devices.The utility model highly versatile, can pass through the break-make of control breaker or on-load switch in various works
Operation mode (for example voltage x current type, voltage-time type, demarcation circuit breaker type, demarcation load switch type, data transmission unit type,
The mode of operations such as indicating fault type, relay protection type) between switch over, so as to adapt to the change of Distribution Network Frame structure.
The specific embodiment of the utility model distribution line Fault Control terminal one：
In order to solve the problems, such as that terminal device cannot be used in Distribution Network Frame structure change, while further very thin elaboration
The technical solution of the utility model, the special different location to be arranged on distribution line, including overhead transmission line or cable run, ring
Net supply line either single radial line and branched line, small resistance grounding system or arc suppression coil earthing system, breaker
Or as a example by the utility model on on-load switch, illustrate of the present utility model to implement process：
Fig. 2 is the structural representation of the specific embodiment of the utility model distribution line Fault Control terminal one, i.e. integration
The hardware elementary diagram of Fault Control terminal；As shown in Fig. 2 the numerical portion of terminal can include 32 high-speed microprocessors and modulus
Converter, program storage, data storage, fixed value memory, high precision clock chip etc., and it is furnished with button and Chinese liquid crystal
Display man-machine interface loop.Input circuit is divided into analog quantity and intake, and analog acquisition has switch both sides cable side and mother
A, B, C three-phase voltage of line side, residual voltage and A, B, C three-phase current, zero-sequence current, intake collection has 12 way switch amounts defeated
Enter.Output loop is then divided into relay output par, c and communications portion, relay output be respectively electric trip-preventing, protection close a floodgate,
Trip protection, remote control combined floodgate, remote control tripping operation, communications portion is by RS485 communication interfaces and all the way ethernet interface group all the way
Into.Terminal is powered and is then provided by high-performance wide scope Switching Power Supply.
And in order to solve the problems, such as that terminal device cannot be used in Distribution Network Frame structure change, distribution line Fault Control
The software of terminal can be programmed using C language, and modularized design mainly configures following functions：1st, phase-to phase fault alarm；2nd, it is grounded
Fault warning；3rd, three sections of overcurrent protections of the three-phase with rear acceleration components；4th, with rear acceleration components and phase current blocking element
Zero sequence excess current is protected；5th, the protection of the self-produced zero sequence excess current with rear acceleration components and phase current blocking element；6th, with rear acceleration
The zero sequence overcurrent protection of element；7th, the under-voltage protection with overcurrent memory cell, undercurrent blocking element；8th, it is powered to press off
Locking element has a pressure closing function；9th, the contact backup power automatic switching function of blocking element with voltage；10th, the secondary reclosing function of three-phase.
Based on above-mentioned 10 kinds protections and the combination of function, this terminal can be based on existing programming technique, be operated in following 7
The pattern of kind：
1. voltage x current pattern formula, is adapted to ring network power supply circuit, using breaker, is realized by transforming plant primary reclosing
Automatic fault isolation and self-healing on the spot；
Specifically, i.e., the utility model distribution line Fault Control terminal can adopt the ring network power supply line of breaker
Road, by voltage x current type logic, the single shot reclosing cooperation with transformer station's outlet switch, is independent of any communication and main website,
The automatism isolation on the spot of failure and self-healing are completed through the time of 1 minute or so.
2. voltage-time type pattern, is adapted to ring network power supply circuit, using on-load switch, by substation secondary reclosing reality
Now automatic fault isolation and self-healing on the spot；
Specifically, i.e., the utility model distribution line Fault Control terminal can adopt the ring network power supply line of on-load switch
Road, by voltage-time type logic, the secondary reclosing cooperation with transformer station's outlet switch, is independent of any communication and main website,
The automatism isolation on the spot of failure and self-healing are completed through the time of 100 seconds or so.
And the defencive function combination of above-mentioned voltage x current pattern formula and voltage-time type pattern is suitable for neutral point Jing small resistors
Earthed system, if neutral by arc extinction coil grounding system, then only need to be changed to zero sequence by punching zero sequence after accelerated protection
Overvoltage after accelerated protection.
3.DTU patterns, are adapted to ring network power supply circuit, by with distribution master station communication, realize automatic fault isolation and self-healing；
Specifically, you can using the ring network power supply circuit of on-load switch, to run on DTU patterns, it is necessary to rely on communication
And main website could realize the isolation and self-healing of failure.
4. fault detector pattern, is adapted to all places of distribution line, by with distribution master station communication, realize failure from
Dynamic positioning；
Specifically, using the ring network power supply circuit of on-load switch, the utility model can be operated in fault detector mould
Formula, realizes being automatically positioned for failure.With DTU model comparisions, maximum advantage is exactly because being sentenced using the compound criterion of Current Voltage
Other failure, the scope of application of its definite value is wider, is hardly needed to adjust setting valve with the change because of distribution network.
5. demarcation circuit breaker pattern, is adapted to single radiation or branched line, using breaker, realizes cutting automatically for failure
Remove；
Specifically, its defencive function of demarcation circuit breaker pattern is identical with common protective relaying device, can only connect nothing
Fault message after action is uploaded to distribution main station system by line or fiber optic communication.
6. demarcation load switch pattern, is adapted to single radiation or branched line, using on-load switch, by overlapping with higher level
Lock coordinates, and realizes the automatism isolation of failure；
Specifically, demarcation load switch pattern is exactly to make full use of the characteristics of on-load switch and relay protection, using with
The cooperation of higher level's reclosing, realizes the automatism isolation of failure, and because on-load switch is just tripped after decompression, there is no relay guarantor
Shield time differential matching problem.
7. relay protection pattern, is adapted to terminal use, using breaker, realizes the automatic excision of failure.
Specifically, relay protection pattern is adapted to using the terminal temperature difference of breaker, by differential with higher level's guard time
Cooperation, realize the automatic excision of failure.
One specific embodiment of the utility model distribution line Fault Control terminal, can solve the problems, such as terminal versatility,
By controlling distribution line breaker or on-load switch, realize the Fault Isolation on the spot of multiple distribution automation terminal equipment with from
More, Fault Isolation and self-healing are carried out using main website concentration or carries out fault location；Ensure in Distribution Network Frame structure change,
Multiple terminal devices can be used.The utility model highly versatile, can pass through control breaker or the break-make of on-load switch exists
Multiple-working mode (such as voltage x current type, voltage-time type, demarcation circuit breaker type, demarcation load switch type, data transfer list
The mode of operations such as first type, indicating fault type, relay protection type) between switch over, so as to adapt to the change of Distribution Network Frame structure
Change.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be defined by claims.
Claims (10)
1. a kind of distribution line Fault Control terminal, it is characterised in that connect the central authorities including central processing unit and respectively
The data input loop of processor and output loop；
The data input loop, including analog quantity acquisition circuit and intake Acquisition Circuit；The analog quantity acquisition circuit to
Voltage data and the distribution of the distribution line switch both sides, cable side and bus bar side of the central processing unit input Real-time Collection
Line current data；The intake Acquisition Circuit is input into the switch of each distribution line of Real-time Collection to the central processing unit
Amount input data；
The central processing unit receives the voltage data, the line current data and the On-off signal data, and root
Believe to the output loop output control according to the voltage data, the line current data and the On-off signal data
Number；
The output loop, including outputting circuit for relay；The outputting circuit for relay receives the control signal, and according to
Distribution line breaker or the break-make of on-load switch that the control signal control is connected with the outputting circuit for relay.
2. distribution line Fault Control terminal according to claim 1, it is characterised in that also connect the number including one end
Connect the memory of the central processing unit according to input circuit, the other end；The memory includes program storage, data storage
Device and fixed value memory.
3. distribution line Fault Control terminal according to claim 2, it is characterised in that described program memory is
FLASH；The data storage is RAM；The fixed value memory is EEPROM.
4. distribution line Fault Control terminal according to claim 1, it is characterised in that the analog quantity acquisition circuit,
The intake Acquisition Circuit and the outputting circuit for relay connect the central processing unit by data/address bus respectively.
5. distribution line Fault Control terminal according to claim 1, it is characterised in that also including connecting the centre
The clock circuit of reason device；The clock circuit is clock chip.
6. the distribution line Fault Control terminal according to claim 1 to 5 any one, it is characterised in that the simulation
Amount Acquisition Circuit includes the analog-digital converter of the connection central processing unit and connects the multiple of the analog-digital converter respectively
Voltage transformer and multiple current transformers.
7. the distribution line Fault Control terminal according to claim 1 to 5 any one, it is characterised in that also including even
Connect the first photoisolator of the intake Acquisition Circuit；The input of first photoisolator connects the centre
Reason device, output end connect each distribution line switch-side.
8. the distribution line Fault Control terminal according to claim 1 to 5 any one, it is characterised in that also including even
Connect the second photoisolator of the outputting circuit for relay；The input of second photoisolator connects the centre
Reason device, output end connect each breaker or the on-load switch.
9. the distribution line Fault Control terminal according to claim 1 to 5 any one, it is characterised in that the output
Loop also includes the communication unit of the connection central processing unit；The communication unit includes RS485 communication modules and Ethernet
Communication module.
10. the distribution line Fault Control terminal according to claim 1 to 5 any one, it is characterised in that the central authorities
Processor is 32 single-chip microcomputers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264648.0U CN206164218U (en) | 2016-11-21 | 2016-11-21 | Join in marriage net line fault control terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264648.0U CN206164218U (en) | 2016-11-21 | 2016-11-21 | Join in marriage net line fault control terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164218U true CN206164218U (en) | 2017-05-10 |
Family
ID=58661086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621264648.0U Active CN206164218U (en) | 2016-11-21 | 2016-11-21 | Join in marriage net line fault control terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164218U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632235A (en) * | 2017-07-21 | 2018-01-26 | 河北旭辉电气股份有限公司 | A kind of identification device of faulty line of small resistance grounding system and recognition methods |
| CN114221295A (en) * | 2022-02-21 | 2022-03-22 | 广东电网有限责任公司珠海供电局 | Automatic reclosing method based on circuit breaker |
-
2016
- 2016-11-21 CN CN201621264648.0U patent/CN206164218U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632235A (en) * | 2017-07-21 | 2018-01-26 | 河北旭辉电气股份有限公司 | A kind of identification device of faulty line of small resistance grounding system and recognition methods |
| CN114221295A (en) * | 2022-02-21 | 2022-03-22 | 广东电网有限责任公司珠海供电局 | Automatic reclosing method based on circuit breaker |
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Effective date of registration: 20210305 Address after: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee after: China Southern Power Grid Power Technology Co.,Ltd. Address before: 296 Cuixiang Road, Xiangzhou District, Zhuhai City, Guangdong Province 519099 Patentee before: ZHUHAI POWER SUPPLY BUREAU, GUANGDONG POWER GRID Co.,Ltd. |