CN206573687U - Arc current detection means under a kind of primary cut-out simulated defect - Google Patents
Arc current detection means under a kind of primary cut-out simulated defect Download PDFInfo
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- CN206573687U CN206573687U CN201720292124.0U CN201720292124U CN206573687U CN 206573687 U CN206573687 U CN 206573687U CN 201720292124 U CN201720292124 U CN 201720292124U CN 206573687 U CN206573687 U CN 206573687U
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- 230000007547 defect Effects 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 230000002950 deficient Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 10
- 230000007246 mechanism Effects 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses arc current detection means under a kind of primary cut-out simulated defect, including the test loop being in series by test product breaker, combined floodgate breaker, AC power, current measuring device, and to breaker actuation control system that test product breaker and combined floodgate breaker are controlled；Defective component is set in the test product breaker, for high voltage breaker simulator defect.Breaker actuation control system triggers each breaker actuation, realizes a complete separating brake process；Pass through arc current signal during oscillograph and detection impedance collection primary cut-out separating brake.The number of drawbacks that the utility model can effectively simulate actual high-voltage breaker running mesohigh breaker body, mechanism easily occurs, and detect the arc current under simulated defect during breaker open operation.
Description
Technical field
The utility model belongs to primary cut-out field of fault detection, and more particularly to one kind realizes that primary cut-out simulation lacks
Sag arc current detection means.
Background technology
Primary cut-out is the control and protection equipment for ensureing that power network safety operation is mostly important, its number in power network
Amount is huge and structure is extremely complex.Primary cut-out is in During Process of Long-term Operation, by environmental factor or component aging itself
All kinds of defects occur in the influence of factor, body, mechanism, and open circuit may be caused by such as cut-offfing the electric arc produced during fault current
Device contact burning, arc-chutes SF6 gas-insulateds hydraulic performance decline, partially slow etc. defect of breaker open operation speed, and these defects may
Breaker drop-out current can be caused to fail, breaker arc extinguishing failure, so as to cause serious equipment or power grid accident, the damage caused
Mistake is far longer than breaker self-value.Meanwhile, because during these defects can cause breaker open operation (drop-out current)
Arc current waveform is abnormal, so by detecting that the arc current waveform during breaker open operation can effectively find these in advance
Latency defect.Therefore, the arc current waveform under research simulated defect during breaker open operation cut-offs to research breaker
Performance and arc-chutes state, the safe and stable operation important in inhibiting for ensureing breaker.
At present, the country not yet has based on the arc current detection means under primary cut-out simulated defect, systematically opens
Breaker simulated defect is opened up to study with arc current signal incidence relation during drop-out current.Therefore, primary cut-out is built
Arc current detection means, the primary cut-out detected based on arc current during breaker open operation are lacked under simulated defect
It is very necessary to fall into analysis and break performance research.
Utility model content
The technical problems to be solved in the utility model is that there is provided a kind of primary cut-out mould in view of the shortcomings of the prior art
Intend arc current detection means under defect, effectively to simulate actual high-voltage breaker running mesohigh breaker body, machine
The number of drawbacks that structure easily occurs, and detect the arc current under simulated defect during breaker open operation.
The technical solution of the utility model is：
Arc current detection means under a kind of primary cut-out simulated defect, including by test product breaker 2, combined floodgate breaker
4th, the test loop that AC power 5, current measuring device 6 are in series, and test product breaker 2 and combined floodgate breaker 4 are entered
The breaker actuation control system 1 of row control；Defective component is set in the test product breaker 2, it is disconnected for simulated high-pressure
Road device defect.
The AC power 5 is used for the alternating current for providing test loop, and current measuring device 6 is opened for testing breaker
Arc current waveform during disconnected.
Auxiliary circuit breaker 3 is also in series with the test loop, the auxiliary circuit breaker 3 is controlled by breaker actuation control
System 1, for being protected to test product breaker, prevents failure of interruption from exploding.
The breaker actuation control system 1 includes delayer and relay, and the relay is used to be each breaker
Divide-shut brake auxiliary contact provide divide-shut brake signal；The delayer is used to control to be supplied to each circuit-breaker switching on-off signal
Time.
The delay time resolution ratio of the delayer is 1ms.
The current measuring device 6 includes oscillograph and detection impedance, and detection impedance is series in test loop, two ends electricity
Press signal by cable transmission into oscillograph.
The oscillograph model Agilent DSO81004A.
Utility model works method is：
The branch wire time of test product breaker 2, auxiliary circuit breaker 3 and combined floodgate breaker 4 is tested first, then according to survey
The actuation time that result presets each breaker in breaker actuation control system 1 is measured, is cut-off with simulating actual breaker as far as possible
Electric current (separating brake) process；Each breaker is triggered finally by breaker actuation control system 1 according to default actuation time to move
(control combined floodgate breaker closes input test current to work by assigning to, and control test product breaker is by conjunction to a point mimic-disconnecting switch separating brake mistake
Journey, control auxiliary circuit breaker protects test product breaker by closing to code insurance), realize a complete separating brake process；By oscillograph and
Detect arc current signal during impedance collection primary cut-out separating brake.
Primary cut-out simulated defect is all realized by breaker component itself or material.Carried by dismounting, replacing
The part of defect can realize the switching of different type defect；The a variety of allusion quotations occurred in primary cut-out actual motion can truly be reflected
Type defect.
The utility model can simulate actual high-voltage breaker and occur arc-chutes insulation defect, mechanism in During Process of Long-term Operation
The partially slow defect of opening velocity, arcing contact scaling loss defect etc. cause arc current in breaker interrupting process to change, by studying electricity
Arc current waveform changes to reflect breaker arc extinguishing ability, to study primary cut-out defect situation to breaker arc extinguishing ability
Influence.The concrete operations of arc current detection means can be by breaker control system under the utility model primary cut-out simulated defect
System is automatically performed, with it is safe and stable, reliable the characteristics of.
The beneficial effects of the utility model are：
The utility model can effectively simulate actual high-voltage breaker running mesohigh breaker body, mechanism and easily go out
Existing number of drawbacks, and the arc current under simulated defect during primary cut-out separating brake is detected, so that systematic Study is high
Voltage breaker body, mechanical defect and arc current relation.With advantages below：
(1) primary cut-out simulated defect is all realized by breaker component itself or material, it is easy to dismounting and replacing；
The switching of different type defect can be realized with defective part by dismounting, replacing；It can truly reflect that primary cut-out is actual
A variety of typical defects of emerged in operation；
(2) opening for test loop electric current can be effectively ensured in the case of test product breaker failure of interruption in auxiliary circuit breaker
It is disconnected, ensure personal equipment safety；
(3) simulated by the number of drawbacks being likely to occur in being run to actual high-voltage breaker, can be hair in time
Existing primary cut-out defect, accurate evaluation breaker arc extinguishing ability and the decision-making of formulation overhaul of line breaker provide foundation；To carry out base
The primary cut-out defect analysis and break performance research that arc current is detected during breaker open operation provide test platform；
Experimental study can instruct actual high-voltage breaker arc extinguishing ability and break performance analysis work.
Brief description of the drawings
Fig. 1 is the structure chart of one specific embodiment of the utility model, is denoted as in figure：
1-breaker actuation control system
2-test product breaker
3-auxiliary circuit breaker
4-combined floodgate breaker
5-AC power
6-current measuring device
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality
It is new to be described in further detail.
Referring to accompanying drawing 1, the utility model discloses arc current detection means under a kind of primary cut-out simulated defect, bag
The test loop being in series by test product breaker 2, combined floodgate breaker 4, AC power 5, current measuring device 6 is included, and it is right
The breaker actuation control system 1 that test product breaker 2 and combined floodgate breaker 4 are controlled；It is provided with the test product breaker 2
Defect component, for high voltage breaker simulator defect.
The AC power 5 is used for the alternating current for providing test loop, and current measuring device 6 is opened for testing breaker
Arc current waveform during disconnected.
Auxiliary circuit breaker 3 is also in series with the test loop, the auxiliary circuit breaker 3 is controlled by breaker actuation control
System 1, for being protected to test product breaker, prevents failure of interruption from exploding.
The breaker actuation control system 1 includes delayer and relay, and the relay is used to be each breaker
Divide-shut brake auxiliary contact provide divide-shut brake signal；The delayer is used to control to be supplied to each circuit-breaker switching on-off signal
Time.
The delay time resolution ratio of the delayer is 1ms.
The current measuring device 6 includes oscillograph and detection impedance, and detection impedance is series in test loop, two ends electricity
Press signal by cable transmission into oscillograph.
The oscillograph model Agilent DSO81004A.
Utility model works method is：
The branch wire time of test product breaker 2, auxiliary circuit breaker 3 and combined floodgate breaker 4 is tested first, then according to survey
The actuation time that result presets each breaker in breaker actuation control system 1 is measured, is cut-off with simulating actual breaker as far as possible
Electric current (separating brake) process；Each breaker is triggered finally by breaker actuation control system 1 according to default actuation time to move
(control combined floodgate breaker closes input test current to work by assigning to, and control test product breaker is by conjunction to a point mimic-disconnecting switch separating brake mistake
Journey, control auxiliary circuit breaker protects test product breaker by closing to code insurance), realize a complete separating brake process；By oscillograph and
Detect arc current signal during impedance collection primary cut-out separating brake.
The utility model can simulate actual high-voltage breaker and occur arc-chutes insulation defect, mechanism in During Process of Long-term Operation
The partially slow defect of opening velocity, arcing contact scaling loss defect etc. cause arc current in breaker interrupting process to change, by studying electricity
Arc current waveform changes to reflect breaker arc extinguishing ability, to study primary cut-out defect situation to breaker arc extinguishing ability
Influence.The concrete operations of arc current detection means can be by breaker control system under the utility model primary cut-out simulated defect
System is automatically performed, with it is safe and stable, reliable the characteristics of.
Embodiment 1：
A specific embodiment of the present utility model is adopted using the structure shown in Fig. 1, wherein breaker actuation control system 1
With the control system voluntarily developed, the system uses delayer and relay, presets the delay time of delayer, and it is delayed
Temporal resolution can reach 1ms, then produce the action auxiliary contact that relay signal passes to breaker；Test product breaker 2
Using commercially available breaker, the component or material of simulated defect voluntarily to develop, can mimic-disconnecting switch polytype defect, such as go out
Arc chamber insulation declines, mechanism opening velocity slow, arcing contact scaling loss partially is serious etc.；Auxiliary circuit breaker 3 uses commercially available breaker, auxiliary
Breaker protects test product breaker by closing to code insurance；Combined floodgate breaker 4 uses commercially available breaker, and combined floodgate breaker closes input by assigning to
Electric current；AC power 5 is commercial power sources, it is possible to provide 0-2500A alternating current；Current measuring device 6 uses commercially available high accuracy
Oscillograph Agilent DSO81004A and detection impedance, detection impedance are series in test loop, and both end voltage signal passes through electricity
Cable is transferred in oscillograph；Oscillograph bandwidth is in more than 1GHz.
Arc current detection means product, is proved to effect through trial operation under the primary cut-out simulated defect of the present embodiment
Well, it is esy to use, safe and reliable, design requirement is fully achieved.
Claims (6)
1. arc current detection means under a kind of primary cut-out simulated defect, it is characterised in that including by test product breaker
(2), the test loop that combined floodgate breaker (4), AC power (5), current measuring device (6) are in series, and it is disconnected to test product
The breaker actuation control system (1) that road device (2) and combined floodgate breaker (4) are controlled；Set in the test product breaker (2)
Defective component, for high voltage breaker simulator defect.
2. arc current detection means under primary cut-out simulated defect according to claim 1, it is characterised in that described
Auxiliary circuit breaker (3) is also in series with test loop, the auxiliary circuit breaker (3) is controlled by breaker actuation control system (1).
3. arc current detection means under primary cut-out simulated defect according to claim 1, it is characterised in that described
Breaker actuation control system (1) includes delayer and relay, and the relay is used for auxiliary for the divide-shut brake of each breaker
Contact is helped to provide divide-shut brake signal；The delayer is used for the time for controlling to be supplied to each circuit-breaker switching on-off signal.
4. arc current detection means under primary cut-out simulated defect according to claim 3, it is characterised in that described
The delay time resolution ratio of delayer is 1ms.
5. arc current detection means under primary cut-out simulated defect according to claim 1, it is characterised in that electric current
Measurement apparatus (6) includes oscillograph and detection impedance, and detection impedance is series in test loop, and both end voltage signal passes through cable
It is transferred in oscillograph.
6. arc current detection means under primary cut-out simulated defect according to claim 5, it is characterised in that described
Oscillograph model Agilent DSO81004A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720292124.0U CN206573687U (en) | 2017-03-23 | 2017-03-23 | Arc current detection means under a kind of primary cut-out simulated defect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720292124.0U CN206573687U (en) | 2017-03-23 | 2017-03-23 | Arc current detection means under a kind of primary cut-out simulated defect |
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| CN206573687U true CN206573687U (en) | 2017-10-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932716A (en) * | 2017-03-23 | 2017-07-07 | 国家电网公司 | Arc current detection means and method under a kind of primary cut-out simulated defect |
| CN112345928A (en) * | 2020-10-16 | 2021-02-09 | 大连理工大学 | Method for measuring current after arc based on tunnel magnetoresistive element |
-
2017
- 2017-03-23 CN CN201720292124.0U patent/CN206573687U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932716A (en) * | 2017-03-23 | 2017-07-07 | 国家电网公司 | Arc current detection means and method under a kind of primary cut-out simulated defect |
| CN112345928A (en) * | 2020-10-16 | 2021-02-09 | 大连理工大学 | Method for measuring current after arc based on tunnel magnetoresistive element |
| CN112345928B (en) * | 2020-10-16 | 2021-09-24 | 大连理工大学 | Method for measuring current after arc based on tunnel magnetoresistive element |
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