CN209148812U - Distribution broken string is grounded live test loop and fault simulation platform - Google Patents
Distribution broken string is grounded live test loop and fault simulation platform Download PDFInfo
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- CN209148812U CN209148812U CN201821704239.7U CN201821704239U CN209148812U CN 209148812 U CN209148812 U CN 209148812U CN 201821704239 U CN201821704239 U CN 201821704239U CN 209148812 U CN209148812 U CN 209148812U
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- 238000012360 testing method Methods 0.000 title claims abstract description 78
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
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Abstract
Break the utility model discloses a kind of distribution and is grounded live test loop and fault simulation platform.The utility model includes single-phase wire break Actual Simulation circuit, polynary networked control systems and information acquisition system, ground connection medium analog loopback and ground connection medium switching platform；The single-phase wire break Actual Simulation circuit includes overhead transmission line broken string ontology, broken string circuit support component and broken string mechanical switch；The polynary networked control systems and information acquisition system are secondary acquisition and control loop, including measuring unit, failure high-precision wave recording device, quick photographic device, switch control and data display platform.The utility model is for the single-phase wire break ground fault new equipment new technology of installation and operation, the functional effects verifying such as realization studies and judges different technologies failure, extinguishing arc, compensation.
Description
Technical field
The utility model belongs to distribution experimental rig, specifically a kind of live test of packaged type distribution broken string ground connection
Circuit and fault simulation platform.
Background technique
As distribution construction application is paid more and more attention, power distribution network single-phase fault Processing Technology Research is also more and more deep.
Occur neutral point in power grid production in recent years to study and judge, matching through novel electric power electric equipment ground progress singlephase earth fault
Net carries out singlephase earth fault with intelligent switch, Intelligent current magnification assisting equipment and the technologies such as studies and judges.Therefore, single-phase to distribution
Ground fault new equipment, new technology inspection are put forward new requirements, and it is new to verify to need to carry out distribution single-phase earthing simulation test
Equipment, new technology singlephase earth fault study and judge functional effect.
Currently, distribution single-phase earthing simulation test generally uses two kinds of modeling schemes:
First is that with regard to simulation, choose test for ground periphery meadow, cement floor, sandstone etc. different mediums as test for ground
Point is drawn with distribution 10kV outlet through switchyard outlet cable or overhead line, by a segment frame hollow wire after extraction, directly
It is placed at the different medium of testing site.Using 10kV outlet switch or looped network cabinet switch as single phase grounding test control switch, carry out
Test for ground, while external mounted measuring unit and wave recording device are configured in grounding point, test data is acquired.This kind of scheme
Major defect: (1) test for ground that breaks is limited by live field medium type.General single-phase wire break test for ground need to select grass
The media such as ground, cement floor, sandstone, and medium is needed to be tested in different humidity, guarantee single-phase earthing simulated environment
Integrality.In-site modeling is limited by place type, can not generally carry out multiple types working condition tests.(2) there is certain security risk.
Scene is using actual place as broken string simulation test, and security risk is larger, and there are step voltages for pedestrian, vehicle etc. around grounding point
Security risk.(3) data acquire limited power system.Typically grounded point chooses progress more from far-off regions, and be put to the test place limitation,
The generally more difficult searching of wave recording device power supply, influences single phase grounding test effect.
Second is that being simulated by integrated form single-phase earthing simulator.With distribution 10kV outlet through switchyard outlet cable
Or overhead line is drawn, and is connected to grounding copper bar through integrated form single-phase earthing simulator, is opened with 10kV outlet switch or ring network cabinet
It closes and is used as single phase grounding test control switch, carry out test for ground.Contain different ground connection inside integrated form single-phase earthing simulator
Mode is generally divided into and is directly grounded (i.e. metallic earthing), through different transition resistance ground connection, arc grounding etc..Simultaneously integrated
Formula single-phase earthing simulator configures wave recording device, is acquired to test data.This kind of scheme major defect: list cannot be simulated
Mutually broken string operating condition.Generally only configuration is directly grounded (i.e. metallic earthing), through different transition electricity to single-phase earthing simulator at present
Three kinds of resistance ground connection, arc grounding modes, can not real simulation circuit breaking operating condition.
As power grid personal safety is got more and more attention, the rapid treating technology research of distribution single-phase wire break failure is increasingly
Extensively, there are the new troubleshooting technologies such as the full compensation technique of neutral point fault current, grounding point fault current transfer techniques,
It needs to carry out compliance test result to the rapid treating technology of distribution single-phase wire break failure.
Utility model content
Technical problem to be solved in the utility model is to overcome the problems of the above-mentioned prior art, is provided a kind of removable
Dynamic formula distribution broken string is grounded live test loop and fault simulation platform, for the single-phase wire break ground fault of installation and operation
New equipment new technology, realization studies and judges different technologies failure, extinguishing arc, the functional effects verifying such as compensation.
For this purpose, the utility model adopts the following technical solutions: distribution broken string is grounded live test loop and fault simulation
Platform comprising single-phase wire break Actual Simulation circuit, polynary networked control systems and information acquisition system, ground connection medium analog loopback
With ground connection medium switching platform；
The single-phase wire break Actual Simulation circuit includes overhead transmission line broken string ontology, broken string circuit support component and broken string
Mechanical switch；The broken string circuit support component includes left side brackets and right side bracket, the left end of overhead transmission line broken string ontology
Axis connects in left side brackets, and the right end of overhead transmission line broken string ontology is connected on the bracket of right side by the mechanical switch that breaks, and passes through
Broken string circuit support component makes the broken string ontology of the overhead transmission line under normality be in suspension status；The overhead transmission line broken string ontology
Left end is electrically connected with the outgoing line side of a breaker；By the operation for the mechanical switch that breaks, overhead transmission line broken string ontology right end is realized
It is disengaged with right side bracket and is rocked to it downwards and connect with ground connection medium analog loopback, realize single-phase wire break Actual Simulation；
The polynary networked control systems and information acquisition system are secondary acquisition and control loop, including measuring unit,
Failure high-precision wave recording device, quick photographic device, switch control and data display platform；
The measuring unit is installed on the outgoing line side of breaker, main to acquire faulty line electrical quantity parameter, i.e. voltage
And electric current；
The failure high-precision wave recording device is multichannel wave recording device, is connected to the outgoing line side of measuring unit, mainly adopts
Collect faulty line electrical quantity Temporal Data；And reserved channel is for acquiring other non-fault line voltages, current parameters；
The quick photographic device generates to OFF state for recording ground connection instant earthing arc light, verifies different quilts
Measurement equipment extinguishing arc effect.
The utility model realizes broken string test simulation by broken string mechanical switch, adjustable by adjusting broken string body length
Break contact surface, at the same by be grounded medium switching platform can flexibly switch meadow, sandstone, the different ground connection such as cement floor are situated between
Matter, grounded medium analog loopback carry out ground resistance and adjust simulation；It is real by polynary networked control systems and information acquisition system
Now break instantaneous high speed video and high-precision recording, for the single-phase wire break ground fault new equipment new technology of installation and operation,
Realization studies and judges different technologies failure, extinguishing arc, the functional effects verifying such as compensation.
Supplement as above-mentioned technical proposal, the switch control and data display platform include switch control circuit,
Switch state circuit, electrical quantity stationary acquisition circuit, the control of high-precision oscillograph and data show circuit, quick photographic device control
System and show circuit；
Switch control circuit is mainly used for controlling the separating brake and combined floodgate of the breaker and the mechanical switch that breaks；Switch state
Circuit is mainly used for acquiring the separating brake of the breaker and the mechanical switch that breaks, "on" position information and show；Electrical quantity stable state
Acquisition circuit mainly connects measuring unit secondary outgoing line, and shows steady state data；The control of high-precision oscillograph and data are shown back
Road mainly connects measuring unit secondary outgoing line, and record is grounded instantaneous electrical quantity variation, carries out through oscillograph recording and on platform
Display；Quick photographic device control and show circuit are connected to quick photographic device outlet, mainly control quick photographic device and open
It is dynamic, and the acquisition data integration of quick photographic device is shown to platform, and control slow motion playback and time record, display ground connection
Instant earthing arc light is generated to OFF state, synchronizes analysis together with recording situation.
Supplement as above-mentioned technical proposal, the ground connection medium analog loopback mainly provide different ground states, packet
Ground connection medium, adjustable resistance and grounding copper bar are included, the ground connection medium is derived from ground connection medium switching platform, is installed on single-phase disconnected
The lower section in line Actual Simulation circuit, the adjustable resistance are connected between ground connection medium outlet and grounding copper bar, for adjusting examination
Test integral ground resistance；The grounding copper bar: it is installed on pilot external place nearby before test, is mainly used for test ground connection.
Supplement as above-mentioned technical proposal, the ground connection medium adjust test integral ground by increasing humidity mode
Resistance.
Supplement as above-mentioned technical proposal, the measuring unit are conventional zero sequence measuring unit.
Supplement as above-mentioned technical proposal, the ground connection medium switching platform include stainless steel supporter and are placed in not
The multiple ground connection dielectric-slabs to become rusty on steel supporter, multiple ground connection dielectric-slabs arrange from top to bottom；The ground connection medium
Switching platform provides a ground connection medium by idler wheel for ground connection medium analog loopback.
Supplement as above-mentioned technical proposal, the broken string mechanical switch are conductor grip, and structure is simple and easy to operate.
Compared with prior art, the technical effect that the utility model has is as follows:
It 1) can Actual Simulation overhead transmission line broken string singlephase earth fault.
Aerial broken string is set and carries out broken string simulation by combined floodgate outlet switch behind ground by existing test platform, different to reflect
Broken string and ground face contact transient state transient earthing arc light state.The utility model really reflects broken string ground connection by the analog loopback that breaks
Transient change, and arc light state is recorded and analyzed by wave recording device and quick photographic device, effectively more all kinds of distribution
Net single-phase fault processing equipment effect is verified to personal safety protecting effect.
2) different live ground connection media can flexibly be switched.
Existing outdoor type ground connection simulation test (non-test base) broken string ground connection medium can only be by live surrounding medium
It carries out, cannot replace.The utility model can anywhere carry out meadow, sandstone, cement or other ground connection media etc. are a variety of connects
Ground medium Test Effect Analysis compares, and adjusts test ground resistance by the adjustable resistance of earth-return circuit, perfect test bar
Part increases the true type of test result and comprehensive.
3) moveable platform.
The utility model realizes the mobility test platform based on different ground connection media, can carry out at the remote place in countryside,
Condition needed for testing is fairly simple, and more traditional outdoor single-phase test for ground saves test space and test period, greatly improves
Test efficiency.
4) the integrated height in test loop.
The utility model electrical primary part will break Actual Simulation circuit, ground connection medium analog loopback integrate, connect
A whole set of test can completely be completed in a platform by passing through control switch after the completion of line, can one-stop completion ground connection broken string examination
It tests, has test controllability strong, external interference is small, and operating condition of test switches the features such as flexible.
Controlling test circuit, recording circuit, camera shooting circuit are integrated to a control by the utility model electric secondary part
Display platform, realize test overall control it is synchronouss with acquisition, recording is synchronous with high-speed camera acquisition, be convenient for test data parse with
Test effect verifying analysis.
Detailed description of the invention
Fig. 1 is the structural block diagram that the utility model distribution broken string is grounded live test loop and fault simulation platform；
Fig. 2 is the structure diagram in the utility model single-phase wire break Actual Simulation circuit；
Fig. 3 is the functional block diagram of the polynary networked control systems of the utility model and information acquisition system；
Fig. 4 is the functional block diagram of the utility model switch control and data display platform；
Fig. 5 is that the utility model distribution broken string is grounded live experiment process figure.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawings of the specification.
Break the present embodiment provides a kind of distribution and be grounded live test loop and fault simulation platform, as shown in Figure 1, it is wrapped
Single-phase wire break Actual Simulation circuit, polynary networked control systems and information acquisition system, ground connection medium analog loopback and ground connection is included to be situated between
Matter switching platform.Measuring unit in Fig. 1 is voltage measurement unit CT and current measuring unit PT.
As shown in Fig. 2, the single-phase wire break Actual Simulation circuit includes overhead transmission line broken string ontology 1, broken string circuit branch
Supportting broken string mechanical switch described in element and broken string mechanical switch 2(the present embodiment is conductor grip).The broken string circuit branch
Support element includes left side brackets 3 and right side bracket 4, and the left end shaft of overhead transmission line broken string ontology 1 connects in left side brackets 3, makes somebody a mere figurehead
Circuit breaking ontology 1 is one section of 1 meter of long conducting wire, and the right end of overhead transmission line broken string ontology 1 is connected to by the mechanical switch 2 that breaks
On right side bracket 4, the broken string ontology of the overhead transmission line under normality is set to be in suspension status by the circuit support component that breaks；The frame
The left end of empty circuit breaking ontology is electrically connected with the outgoing line side of 10kV breaker 5；By the operation for the mechanical switch that breaks, frame is realized
Empty circuit breaking ontology right end disengages with right side bracket and is rocked to it downwards and connect with ground connection medium analog loopback, realizes single-phase
Break Actual Simulation.
As shown in figure 3, the polynary networked control systems and information acquisition system are secondary acquisition and control loop, including
Measuring unit, failure high-precision wave recording device, quick photographic device, switch control and data display platform.
The measuring unit is conventional zero sequence measuring unit, is installed on the outgoing line side of breaker, mainly acquires fault wire
Road electrical quantity parameter, i.e. electric current and voltage.
The failure high-precision wave recording device is multichannel wave recording device, is connected to the outgoing line side of measuring unit, mainly adopts
Collect faulty line electrical quantity Temporal Data；And reserved channel is for acquiring other non-fault line voltages, current parameters.
The quick photographic device generates to OFF state for recording ground connection instant earthing arc light, verifies different quilts
Measurement equipment extinguishing arc effect.
As shown in figure 4, the switch control and data display platform include switch control circuit, switch state circuit,
Electrical quantity stationary acquisition circuit, the control of high-precision oscillograph and data show circuit, the control of quick photographic device and show circuit.
Switch control circuit is mainly used for controlling the separating brake and combined floodgate of the breaker and the mechanical switch that breaks；Switch state
Circuit is mainly used for acquiring the separating brake of the breaker and the mechanical switch that breaks, "on" position information and show；Electrical quantity stable state
Acquisition circuit mainly connects measuring unit secondary outgoing line, and shows steady state data；The control of high-precision oscillograph and data are shown back
Road mainly connects measuring unit secondary outgoing line, and record is grounded instantaneous electrical quantity variation, carries out through oscillograph recording and on platform
Display；Quick photographic device control and show circuit are connected to quick photographic device outlet, mainly control quick photographic device and open
It is dynamic, and the acquisition data integration of quick photographic device is shown to platform, and control slow motion playback and time record, display ground connection
Instant earthing arc light is generated to OFF state, synchronizes analysis together with recording situation.
The ground connection medium analog loopback mainly provides different ground states, including is grounded medium, adjustable resistance and connects
Ground copper bar, the ground connection medium are derived from ground connection medium switching platform, meadow, sandstone, cement floor multiselect one, specification is
0.5m*0.5m, is installed on the lower section in single-phase wire break Actual Simulation circuit, and to adjust test whole by increasing humidity mode for ground connection medium
Body ground resistance.The adjustable resistance is connected between ground connection medium outlet and grounding copper bar, can flexible modulation 0-5000 Ω electricity
Resistance, for adjusting test integral ground resistance；The grounding copper bar: pilot external place nearby is installed on before test, mainly
It is grounded for testing.
Multiple ground connection that the ground connection medium switching platform includes stainless steel supporter and is placed on stainless steel supporter
Dielectric-slab, multiple ground connection dielectric-slabs arrange from top to bottom；The ground connection medium switching platform is ground connection by idler wheel
Medium analog loopback provides a ground connection medium.
Above-mentioned distribution broken string is grounded the test method of live test loop and fault simulation platform, as shown in Figure 5 comprising
Following steps.
1) it is grounded the wiring of medium analog loopback: determining that operating condition of test, Selection experiment ground connection medium simultaneously install fixation, installation connects
Ground copper bar adjusts adjustable resistance after measurement of Grounding Resistance, until ground resistance meets test requirements document.
2) single-phase wire break Actual Simulation circuit connection: mounting and fixing support sky circuit breaking ontology carries out not before accessing power supply
Electrification broken string simulated operation determines that broken string reliable contacts are grounded medium.It determines and connects tested set in the not charged situation of equipment under test
For outlet to 10kV breaker inlet wire.
3) single-phase wire break ground connection simulation: connecting equipment under test power supply, close 10kV breaker, and separately break mechanical switch,
The right side of overhead transmission line broken string ontology is set to fall, contact ground connection medium completes ground connection operating mode, is set after the time that disconnect 10kV disconnected
Road device completes single phase grounding test.
4) test data records and analyzes: controlling 10kV breaker, broken string mechanical switch on console simultaneously, it is high to open failure
Precision wave recording device, quick photographic device are acquired record to electrical quantity waveform in the ground connection time, to the arc that breaks during broken string
Light, broken string spring degree etc. are recorded with fast photographic device of reading, and camera shooting record synchronizes analysis together with recording record, are evaluated
Equipment under test functional effect.
5) power supply is disconnected, replacement ground connection medium carries out next operating condition of test test.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (7)
1. distribution broken string is grounded live test loop and fault simulation platform, which is characterized in that including single-phase wire break Actual Simulation
Circuit, polynary networked control systems and information acquisition system, ground connection medium analog loopback and ground connection medium switching platform；
The single-phase wire break Actual Simulation circuit includes overhead transmission line broken string ontology (1), broken string circuit support component and broken string
Mechanical switch (2)；The broken string circuit support component includes left side brackets (3) and right side bracket (4), and overhead transmission line broken string is originally
The left end shaft of body (1) connects on left side brackets (3), and the right end of overhead transmission line broken string ontology (1) is connected by broken string mechanical switch (2)
It connects on right side bracket (4), so that the broken string ontology of the overhead transmission line under normality is in suspension status by the circuit support component that breaks；
The left end of overhead transmission line broken string ontology (1) is electrically connected with the outgoing line side of a breaker (5)；Pass through the behaviour for the mechanical switch that breaks
Make, realizes that overhead transmission line broken string ontology right end and right side bracket disengage and be rocked to it downwards and connect with ground connection medium analog loopback
It connects, realizes single-phase wire break Actual Simulation；
The polynary networked control systems and information acquisition system are secondary acquisition and control loop, including measuring unit, failure
High-precision wave recording device, quick photographic device, switch control and data display platform；
The measuring unit is installed on the outgoing line side of breaker, main to acquire faulty line electrical quantity parameter；
The failure high-precision wave recording device is multichannel wave recording device, is connected to the outgoing line side of measuring unit, main acquisition event
Hinder route electrical quantity Temporal Data；And reserved channel is for acquiring other non-fault line voltages, current parameters；
The quick photographic device is generated for recording ground connection instant earthing arc light to OFF state, is verified different be tested and is set
Standby extinguishing arc effect.
2. distribution broken string according to claim 1 is grounded live test loop and fault simulation platform, which is characterized in that institute
The switch control and data display platform stated include switch control circuit, switch state circuit, electrical quantity stationary acquisition circuit, height
The control of precision oscillograph and data show circuit, the control of quick photographic device and show circuit；
Switch control circuit is mainly used for controlling the separating brake and combined floodgate of the breaker and the mechanical switch that breaks；Switch state circuit
It is mainly used for acquiring the separating brake of the breaker and the mechanical switch that breaks, "on" position information and shows；Electrical quantity stationary acquisition
Circuit mainly connects measuring unit secondary outgoing line, and shows steady state data；The control of high-precision oscillograph and data show circuit master
Measuring unit secondary outgoing line is connected, record is grounded instantaneous electrical quantity variation, is shown through oscillograph recording and on platform；
Quick photographic device control and show circuit are connected to quick photographic device outlet, mainly control quick photographic device starting, and
The acquisition data integration of quick photographic device is shown to platform, and controls slow motion playback and time record, display ground connection moment
Ground connection arc light is generated to OFF state, synchronizes analysis together with recording situation.
3. distribution broken string according to claim 1 or 2 is grounded live test loop and fault simulation platform, feature exist
In the ground connection medium analog loopback mainly provides different ground states, including ground connection medium, adjustable resistance and grounding copper
Row, the ground connection medium is derived from ground connection medium switching platform, is installed on the lower section in single-phase wire break Actual Simulation circuit, described
Adjustable resistance is connected between ground connection medium outlet and grounding copper bar, for adjusting test integral ground resistance；The grounding copper
Row: it is installed on pilot external place nearby before test, is mainly used for test ground connection.
4. distribution broken string according to claim 3 is grounded live test loop and fault simulation platform, which is characterized in that institute
The ground connection medium stated adjusts test integral ground resistance by increasing humidity mode.
5. distribution broken string according to claim 1 or 2 is grounded live test loop and fault simulation platform, feature exist
In the measuring unit is conventional zero sequence measuring unit.
6. distribution broken string according to claim 1 or 2 is grounded live test loop and fault simulation platform, feature exist
In multiple ground connection media that the ground connection medium switching platform includes stainless steel supporter and is placed on stainless steel supporter
Plate, multiple ground connection dielectric-slabs arrange from top to bottom；The ground connection medium switching platform is ground connection medium by idler wheel
Analog loopback provides a ground connection medium.
7. distribution broken string according to claim 1 or 2 is grounded live test loop and fault simulation platform, feature exist
In the broken string mechanical switch is conductor grip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821704239.7U CN209148812U (en) | 2018-10-19 | 2018-10-19 | Distribution broken string is grounded live test loop and fault simulation platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821704239.7U CN209148812U (en) | 2018-10-19 | 2018-10-19 | Distribution broken string is grounded live test loop and fault simulation platform |
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| Publication Number | Publication Date |
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| CN209148812U true CN209148812U (en) | 2019-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375056A (en) * | 2018-10-19 | 2019-02-22 | 国网浙江省电力有限公司电力科学研究院 | Distribution broken string is grounded live test loop and fault simulation platform and test method |
-
2018
- 2018-10-19 CN CN201821704239.7U patent/CN209148812U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375056A (en) * | 2018-10-19 | 2019-02-22 | 国网浙江省电力有限公司电力科学研究院 | Distribution broken string is grounded live test loop and fault simulation platform and test method |
| CN109375056B (en) * | 2018-10-19 | 2023-11-07 | 国网浙江省电力有限公司电力科学研究院 | Distribution network broken line grounding live test loop, fault simulation platform and test method |
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