CN209673979U - A kind of test platform for power distribution network single phase grounding test - Google Patents
A kind of test platform for power distribution network single phase grounding test Download PDFInfo
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- CN209673979U CN209673979U CN201822189132.XU CN201822189132U CN209673979U CN 209673979 U CN209673979 U CN 209673979U CN 201822189132 U CN201822189132 U CN 201822189132U CN 209673979 U CN209673979 U CN 209673979U
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- arc discharge
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Abstract
The utility model discloses a kind of test platforms for power distribution network single phase grounding test, the test platform of the utility model has stepping adjustable resistor and controllable arc discharge device, singlephase earth fault can be really generated on the line, realize metallic ground, different value and arc discharge phenomenon under nonmetallic Grounding, the acquisition and monitoring of signal are carried out to controllable arc discharge device, and the parameter of controllable arc discharge device is configured and is controlled, finally by breaker group, the data of stepping adjustable resistor and controllable arc discharge device are monitored, testing crew is set to be selected according to test requirements document discharge resistance resistance value, and it can control the parameter of arc discharge, it ensure that the reliability of test data, meet test demand.
Description
Technical field
The utility model belongs to one-phase earthing failure in electric distribution network test field, and in particular to one kind connects for power distribution network to be single-phase
The test platform of ground test.
Background technique
Power distribution network is to contact link the most direct in electric system with user, broad covered area, the reliability of power supply
Increasingly draw attention.And singlephase earth fault is the major failure type in distribution network failure, and it is reliable to drastically influence power supply
Property, and there may be overvoltage burning apparatus, or even cause phase fault and expand accident.Failure when therefore to single-phase earthing
Analysis, positioning, research have become current distribution urgent problem to be solved.Along with current Distribution Network Equipment producer is numerous,
In order to meet the work requirements of quality control, the links such as detection that network, it is also desirable in the different location of each outlet of power distribution network
Single-phase earthing point is set to test the protective value of Distribution Network Equipment.
Existing distribution ground connection experiment is by burying ground stud in grounding point attachment, and ground line one end passes through different Jie
Matter is connected on ground stud, and the ground line other end is connected on insulating bar, and experimenter holds insulating bar and is overlapped on ground line
On bus, to generate artificial singlephase earth fault.This experiment method cannot accurately control the initial phase angle of failure, nothing
Method accurately controls the electric parameters such as grounding resistance, is unable to get gedanken experiment data, and this experiment method is inconvenient for operation,
There is very big security risk to test operator and surrounding people.And it is current to the verifying of distribution net equipment single-phase earthing arbitration functions
All it is to inject failure by secondary terminals to be tested, single-phase earthing event is injected to terminal secondary side by relay protection experimental instrument
Hinder waveform and carry out single-phase earthing test, fault waveform is to be emulated by RTDS or remembered when practical ground fault occurs with oscillograph
The waveform of record.But RTDS simulation waveform is all reference waveform, and the waveform of oscillograph record is because the relationship of sampled point can not be remembered
Fault moment complete waveform is recorded, along with reaying protection test instrument waveform playback has certain distortion factor that can not effectively accurately reflect now
The true grounding phenomenon in field, it is not comprehensive to the functional verification of verifying distribution net equipment.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of tests for power distribution network single phase grounding test
Platform not can control the grounding resistance of ground connection experiment to solve waveform playback distortion, cannot obtain full experiment data etc. and lack
It falls into, and solves the safety problem of testing crew.
In order to achieve the above object, a kind of test platform for power distribution network single phase grounding test, including with route to be measured
The breaker group of connection, is provided with disconnecting switch between breaker and route to be measured, breaker connects stepping adjustable resistor, stepping
Adjustable resistor connects controllable arc discharge device, controllable arc discharge device connection ground line.
Breaker group and stepping adjustable resistor access PLC controller, and controllable arc discharge device connects serial port service
Device, PLC controller and the equal couple in router of serial server, router connect computer.
Fuse is provided between disconnecting switch and route to be measured.
Stepping adjustable resistor and controllable arc discharge device are provided with contactor.
Router, serial server and PLC controller and equipment power supply are all connected with UPS.
Compared with prior art, there is the test platform of the utility model stepping adjustable resistor and controllable arc discharge to fill
Set, can really generate singlephase earth fault on the line, realize metallic ground, different value under nonmetallic Grounding and
Arc discharge phenomenon carries out the acquisition and monitoring of signal to controllable arc discharge device, and to the ginseng of controllable arc discharge device
Number is configured and controls, and finally supervises the data of breaker group, stepping adjustable resistor and controllable arc discharge device
Control, enables testing crew to be selected according to test requirements document discharge resistance resistance value, and can control the parameter of arc discharge,
The reliability that ensure that test data meets test demand.The closing time of breaker can also be set, thus Control experiment
Time.Closure or disconnection, it can be achieved that far distance control three-phase intelligent breaker are controlled by external, to realize to high pressure
Isolation, do not need operator closely control, ensure that the safety of operator.
Further, breaker group and stepping adjustable resistor are accessed into PLC controller, controllable arc in the utility model
Light electric discharge device connects serial server, PLC controller and the equal couple in router of serial server, and router connects computer,
Control remotely can be carried out to equipment such as breaker, contactors and parameter is downloaded, real-time all data of collection site, simple side
Just.
Detailed description of the invention
Fig. 1 is the structure chart and principle of the utility model；
Fig. 2 is the control structure figure of the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Referring to Fig. 1, a kind of test platform architecture for the experiment of power distribution network single-phase earthing, movable detection platform includes disconnected
Road device cabinet, resistor box, arc discharge device cabinet and UPS cabinet.Breaker cabinet, resistor box and arc discharge device cabinet in cabinet according to
It is secondary to be electrically connected by female copper bar.
Breaker cabinet includes distribution line copper bar connector, high-voltage isolation device, vacuum circuit breaker and protective device.Copper bar
By flexible cable with connection is surveyed, high-voltage isolation device is connected connector with cabinet copper bar connector, vacuum circuit breaker and height
Isolating device is pressed to be connected, protective device is connected with vacuum circuit breaker.Wherein high-voltage isolation device and vacuum circuit breaker are responsible for closing
With disconnection 10kV route to be measured.
Resistor box input terminal is connected with breaker cabinet, and resistor box output end is connected with arc discharge device cabinet.Wherein resistance
Device is combined using multiple Power Resistors, and various grounding resistances when analog ground fault occurs, resistance value can expire
Sufficient metallic earthing, non-metal earthing failure, instantaneous, permanent fault test parameters requirement.
Arc discharge cabinet input terminal is connect with resistor box, and output end is connected with the earth.Entire cabinet body quartile primary side and two
Secondary side two parts, primary side use copper busbar, connect with a side bus in resistor box.Secondary side is low-voltage control circuit,
It is powered using AC220V.Arc grounding phenomenon of the arc discharge cabinet non-metal earthing occurs, can produce lasting arc light
Electric discharge, also can produce interval arc light electric discharge phenomena.
UPS cabinet includes host, battery, for powering to experimental provision secondary side.It is also equipped with wireless router, serial port service
Device, the equipment such as Switching Power Supply, all secondary control signal acquisitions are to remote operation software in realization device.
Referring to Fig. 1, a kind of test platform for power distribution network single phase grounding test, including the open circuit with connection to be measured
Device group is provided with disconnecting switch, fuse, breaker is provided between disconnecting switch and route to be measured between breaker and route to be measured
Stepping adjustable resistor is connected, stepping adjustable resistor connects controllable arc discharge device, and controllable arc discharge device connection is single
Mutually it is grounded；Stepping adjustable resistor and controllable arc discharge device are provided with contactor；
Breaker group, stepping adjustable resistor access PLC controller, and microcomputer complex protection connects string with controllable arc discharge device
Mouth server, PLC controller and the equal couple in router of serial server, router connect computer, router, serial server
UPS is all connected with equipment power supplys such as PLC controllers；
Referring to fig. 2, the control method of the utility model, comprising the following steps:
By route to be measured access after the completion of, determine stepping adjustable resistor resistance value and controllable arc discharge device it is electrical
Parameter, resistance value resistance value is arranged to test resistance value before experiment, and confirms that disconnecting switch and breaker are in gate-dividing state；
Disconnecting switch combined floodgate power transmission carries out test for ground；
Stepping adjustable resistor is remotely controlled, state acquisition and monitoring, the modification of parameter and setting；
The acquisition and monitoring of signal are carried out to controllable arc discharge device, and the parameter of controllable arc discharge device is carried out
It is set and controlled, and all data is stored into database in real time；
After completing test, last disconnecting switch separating brake.
Preferably, it can be controlled remotely by a computer breaker group combined floodgate in the utility model, and breaker is set certainly
Dynamic opening time.
Preferably, stepping adjustable resistor is remotely controlled using PLC controller in the utility model, state acquisition
With monitoring, the modification and setting of parameter.
Preferably, acquisition and the prison of signal are carried out in the utility model to controllable arc discharge device by serial server
Depending on.
Preferably, it is sent data in router, is routed by PLC controller and serial server in the utility model
Device sends the signal to computer, and computer can be to breaker group, stepping adjustable resistor and controllable arc discharge device
Data are monitored.Computer controls automatic brake separating in breaker group separating brake or setting time.
Computer is used to carry out point breaker, closes monitoring；For the switching on and off state of remote control of circuit breaker, and energy
Modify breaker time；It remotely monitors and controls for the row to controllable arc discharge device；It is adjustable for controlling stepping
Resistor carries out the switching of different grounding resistances under different discharge patterns.The long-range of breaker is controlled in addition to remote operation is
System can control, also mating Digiplex, can be carried out to breaker point by remote controler, closing operation.
Claims (1)
1. a kind of test platform for power distribution network single phase grounding test, which is characterized in that including disconnected with connection to be measured
Road device group, is provided with disconnecting switch between breaker and route to be measured, breaker connects stepping adjustable resistor, stepping adjustable resistance
Device connects controllable arc discharge device, controllable arc discharge device connection ground line；
Breaker group and stepping adjustable resistor access PLC controller, and controllable arc discharge device connects serial server,
PLC controller and the equal couple in router of serial server, router connect computer；
Router, serial server and PLC controller and equipment power supply are all connected with UPS；
Fuse is provided between disconnecting switch and route to be measured；
Stepping adjustable resistor and controllable arc discharge device are provided with contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822189132.XU CN209673979U (en) | 2018-12-25 | 2018-12-25 | A kind of test platform for power distribution network single phase grounding test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822189132.XU CN209673979U (en) | 2018-12-25 | 2018-12-25 | A kind of test platform for power distribution network single phase grounding test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209673979U true CN209673979U (en) | 2019-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822189132.XU Active CN209673979U (en) | 2018-12-25 | 2018-12-25 | A kind of test platform for power distribution network single phase grounding test |
Country Status (1)
| Country | Link |
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| CN (1) | CN209673979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444788A (en) * | 2018-12-25 | 2019-03-08 | 李勇 | A kind of test platform and control method for power distribution network single phase grounding test |
| CN112816832A (en) * | 2021-03-19 | 2021-05-18 | 国网福建省电力有限公司电力科学研究院 | Power distribution network broken line grounding test device and test method |
-
2018
- 2018-12-25 CN CN201822189132.XU patent/CN209673979U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444788A (en) * | 2018-12-25 | 2019-03-08 | 李勇 | A kind of test platform and control method for power distribution network single phase grounding test |
| CN109444788B (en) * | 2018-12-25 | 2023-12-22 | 李勇 | Test platform for single-phase grounding test of power distribution network and control method |
| CN112816832A (en) * | 2021-03-19 | 2021-05-18 | 国网福建省电力有限公司电力科学研究院 | Power distribution network broken line grounding test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220728 Address after: 710000 room 10660, unit 1, building 3, yicuiyuan I metropolis, No. 11, Tangyan South Road, Zhangba Street office, high tech Zone, Xi'an, Shaanxi Province Patentee after: Xi'an HENGWEI Electric Technology Co.,Ltd. Address before: 710000 No. 8, Fenghui South Road, Yanta District, Xi'an City, Shaanxi Province Patentee before: Li Yong |
|
| TR01 | Transfer of patent right |