CN202443105U - Device and system for detecting operation mechanism of breaker - Google Patents
Device and system for detecting operation mechanism of breaker Download PDFInfo
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- CN202443105U CN202443105U CN2012200609707U CN201220060970U CN202443105U CN 202443105 U CN202443105 U CN 202443105U CN 2012200609707 U CN2012200609707 U CN 2012200609707U CN 201220060970 U CN201220060970 U CN 201220060970U CN 202443105 U CN202443105 U CN 202443105U
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Abstract
The utility model discloses a device and a system for detecting an operation mechanism of a breaker. The detecting device comprises a first detecting module, a current comparing module and a fault determining module, wherein the first detecting module is used for detecting on-off switch coil current of the operation mechanism of the breaker, the current comparing module is used for comparing the on-off switch coil current with preset on-off switch coil current or former on-off switch coil current, and the fault determining module is used for determining the fault locations of the operation mechanism of the breaker according to the comparison results. The detecting device detects the on-off switch coil current of the operation mechanism of the breaker, and determines the fault locations of the operation mechanism of the breaker according to detecting results and corresponding relationships of mechanism motion sates of current waveforms and the whole switching on/off process of the breaker; a detecting process is free of power supply interruption; and the availability of the breaker during the detecting process is guaranteed.
Description
Technical field
The utility model relates to power domain, more specifically, relates to a kind of circuit breaker operation mechanism pick-up unit and system.
Background technology
The breaker mechanism defective is to cause the first cause of operation of power networks divide-shut brake failure, and the operation of power networks problem brings massive losses can for relevant enterprise even society.According to statistics, isolating switch defective or the fault of 60%-70% are caused by the breaker mechanism defective, comprising: mechanism's bite, grease solidify, spring wears out, Slow-disconnecting and slow-connecting, connecting rod drive shafts fracture, mechanism's tripping etc.Carrying out state-detection to the breaker mechanism defective is the important means of effectively preventing the breaker mechanism defective to impact.
The state inspection of conventional circuit breaker is put (containing ultrahigh frequency, ultrasound wave, transient state ground electric wave) only to electrically contacting defective and insulating element (medium) defective is diagnosed like infrared drawn game, and breaker mechanical mechanism is not still had effective state-detection means.
In the correlation technique, circuit breaker operation mechanism is detected need be out of service with isolating switch, reduced the available rate of isolating switch.
The utility model content
The utility model aims to provide a kind of circuit breaker operation mechanism pick-up unit and system, can solve in the correlation technique, and circuit breaker operation mechanism is detected need be out of service with isolating switch, reduces problems such as isolating switch available rate.
An aspect according to the utility model provides a kind of circuit breaker operation mechanism pick-up unit, comprising: first detection module is used to detect the divide-shut brake coil current of circuit breaker operation mechanism; Current comparing module is used for the divide-shut brake coil current of divide-shut brake coil current and predefined divide-shut brake coil current or detection last time is compared; Fault determination module is used for confirming according to comparative result the trouble location of circuit breaker operation mechanism.
Preferably, said apparatus also comprises: second detection module is used to detect the electric current of a major loop at isolating switch place; Computing module was used for according to the galvanometer point counting/closing time of a major loop and three-phase same period not.
Preferably, said apparatus also comprises: the 3rd detection module is used to detect the voltage that controls of circuit breaker operation mechanism.
Preferably, above-mentioned first detection module comprises: detection sub-module, be used to respond user's operation, and detect the divide-shut brake coil current of circuit breaker operation mechanism.
Preferably, said apparatus also comprises: display module is used for the divide-shut brake coil current is shown to the user.
According to the utility model on the other hand; A kind of circuit breaker operation mechanism detection system is provided; Comprise: circuit breaker operation mechanism and circuit breaker operation mechanism pick-up unit, wherein, the circuit breaker operation mechanism pick-up unit is connected to circuit breaker operation mechanism; Comprise: first detection module is used to detect the divide-shut brake coil current of circuit breaker operation mechanism; Current comparing module is used for the divide-shut brake coil current of divide-shut brake coil current and predefined divide-shut brake coil current or detection last time is compared; Fault determination module is used for confirming according to comparative result the trouble location of circuit breaker operation mechanism.
Preferably, above-mentioned circuit breaker operation mechanism pick-up unit also comprises second detection module, is used to detect the electric current of a major loop at isolating switch place; Computing module was used for according to the galvanometer point counting/closing time of a major loop and three-phase same period not.
Preferably, above-mentioned circuit breaker operation mechanism pick-up unit also comprises the 3rd detection module, is used to detect the voltage that controls of circuit breaker operation mechanism.
Preferably, above-mentioned first detection module comprises: detection sub-module, be used to respond user's operation, and detect the divide-shut brake coil current of circuit breaker operation mechanism.
Preferably, above-mentioned circuit breaker operation mechanism pick-up unit also comprises display module, is used for the divide-shut brake coil current is shown to the user.
In the utility model; The circuit breaker operation mechanism pick-up unit detects the divide-shut brake coil current of circuit breaker operation mechanism; And according to the corresponding relation of the mechanism kinematic state of testing result and current waveform and isolating switch branch/combined floodgate overall process; Confirm the trouble location of circuit breaker operation mechanism, and testing process need not cut off the power supply, guarantee the available rate of isolating switch in the testing process.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, constitutes the application's a part, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structured flowchart according to the circuit breaker operation mechanism pick-up unit of the utility model embodiment;
Fig. 2 is the concrete structure block diagram one according to the circuit breaker operation mechanism pick-up unit of the utility model embodiment;
Fig. 3 is the concrete structure block diagram two according to the circuit breaker operation mechanism pick-up unit of the utility model embodiment;
Fig. 4 is the concrete structure block diagram three according to the circuit breaker operation mechanism pick-up unit of the utility model embodiment;
Fig. 5 is the concrete structure block diagram four according to the circuit breaker operation mechanism pick-up unit of the utility model embodiment;
Fig. 6 is the structured flowchart according to the circuit breaker operation mechanism detection system of the utility model embodiment;
Fig. 7 is according to the structure of the circuit breaker operation mechanism detection system of the utility model preferred embodiment and annexation synoptic diagram;
Fig. 8 is the current waveform synoptic diagram according to the circuit breaker operation mechanism detection system detection of the utility model preferred embodiment.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the utility model.
In the correlation technique, circuit breaker operation mechanism is detected need be out of service with isolating switch, reduced the available rate of isolating switch.And the mechanism kinematic state of the corresponding isolating switch branch of the current waveform of typical divide-shut brake coil/combined floodgate overall process; Therefore the utility model utilizes pick-up unit to detect the divide-shut brake coil current of circuit breaker operation mechanism; Thereby confirm fault and trouble location thereof that circuit breaker operation mechanism exists in the process of running; And utilize this pick-up unit need not cut off the power supply, guaranteed the available rate of isolating switch in the testing process.
Based on above analysis; The utility model embodiment provides a kind of circuit breaker operation mechanism pick-up unit; Fig. 1 is the structured flowchart according to the circuit breaker operation mechanism pick-up unit of the utility model embodiment; As shown in Figure 1, this pick-up unit comprises first detection module 11, current comparing module 12 and fault determination module 13.Be described in detail in the face of its structure down.
In the foregoing description; The circuit breaker operation mechanism pick-up unit detects the divide-shut brake coil current of circuit breaker operation mechanism; And according to the corresponding relation of the mechanism kinematic state of testing result and divide-shut brake coil current waveform and isolating switch branch/combined floodgate overall process; Confirm the trouble location of circuit breaker operation mechanism, and testing process need not cut off the power supply, guarantee the available rate of isolating switch in the testing process.
Particularly, the divide-shut brake coil current that detects circuit breaker operation mechanism can be regularly to detect, and also can be that the user detects; So referring to Fig. 2; Above-mentioned first detection module 11 comprises detection sub-module 112, is used to respond user's operation, detects the divide-shut brake coil current of circuit breaker operation mechanism.
Referring to Fig. 3, confirm that parameter such as branchs/closing time can be through following structure realization: second detection module 14 is used to detect the electric current of the major loop that isolating switch belongs to; Computing module 15 is connected to second detection module 14, and the galvanometer point counting/closing time of a major loop that is used for detecting according to second detection module 14, three-phase be the same period not.Calculate branch wire time and also combine divide-shut brake coil current waveform, can confirm corresponding trouble location through the time-delay of the electric current that detects.
Considering can be through detecting the voltage that controls of circuit breaker operation mechanism; Whether direct supply and the accumulator of confirming this isolating switch need to change; So as shown in Figure 4, above-mentioned detection device also comprises: the 3rd detection module 16 is used to detect the voltage that controls of circuit breaker operation mechanism.Like this, can confirm earlier whether the isolating switch power supply has problems,, remove to detect this isolating switch again and whether have other problem, can avoid blind detection if power supply need not changed.
In addition, except pick-up unit is confirmed trouble location, can also the divide-shut brake coil current that detect be shown to the user, let the user relatively also confirm trouble location.As shown in Figure 5, said apparatus also comprises: display module 17, be connected to first detection module 11, and be used for the divide-shut brake coil current that first detection module 11 detects is shown to the user, supply the user to carry out relatively also definite trouble location of electric current.
The utility model embodiment also provides a kind of circuit breaker operation mechanism detection system; As shown in Figure 6; This system comprises: circuit breaker operation mechanism 61 and circuit breaker operation mechanism pick-up unit 62, and wherein, circuit breaker operation mechanism pick-up unit 62 is connected to circuit breaker operation mechanism 61; Comprise: first detection module 622 is used to detect the divide-shut brake coil current of circuit breaker operation mechanism; Current comparing module 624 is connected to first detection module 622, is used for the divide-shut brake coil current of first detection module 622 detections and the divide-shut brake coil current of predefined divide-shut brake coil current or detection last time are compared; Fault determination module 626 is connected to current comparing module 624, is used for confirming according to the comparative result of current comparing module 624 trouble location of circuit breaker operation mechanism.
The concrete structure of above-mentioned circuit breaker operation mechanism pick-up unit 62 is consistent to structure shown in Figure 5 with Fig. 2, repeats no more here.
Below in conjunction with concrete accompanying drawing and concrete embodiment the utility model is described further.
The circuit breaker operation mechanism detection system that the utility model provides; Its structure and connected mode are as shown in Figure 7, and this detection system comprises detecting device (corresponding to above-mentioned circuit breaker operation mechanism pick-up unit), current signal collector, sub-switch circuit, circuit breaker operation mechanism and some leads.Here the current signal collector is an example with current transformer (Current Transformer abbreviates CT as), and that label 1 is direct current jaw type CT among the figure, charged access transformer and distribution power station control bus bar circuit; Label 2 be to exchange jaw type CT, the charged secondary side that is contained in a major loop CT of circuit breaker operation mechanism.
Particularly, detecting device is measured the divide-shut brake coil current of circuit breaker operation mechanism through direct current jaw type CT, and obtains the waveform of this divide-shut brake coil current.As shown in Figure 8, the current waveform that can detection be obtained when dispatching from the factory or the current waveform that detected last time compare, judge whether circuit breaker operation mechanism needs maintenance thereby draw, and the position that needs emphasis to overhaul.Because the mechanism kinematic state of the corresponding isolating switch branch of the current waveform of typical branch/closing coil/combined floodgate overall process; So can extract time-parameters, mechanism action parameter, branch/information such as closing coil electric parameter isolating switch branch/making process from curve shown in Figure 7, and then confirm fault and the position of breaking down according to these information.For example: time-delay appears in T1 among Fig. 8 constantly, proves that then its corresponding position breaks down.
Detecting device is also through exchanging the electric current that jaw type CT detects a major loop at isolating switch place, this alternating current be used for calculating divide, closing time and three-phase same period not, thereby can be according to the fault of the delay decision operation mechanism of electric current.It should be noted that three phase time CT sides answer 3 lines to pick out, only show a line among Fig. 7 and pick out.
In addition; Detecting device can also detect the voltage that controls of circuit breaker operation mechanism, and this voltage can reflect the state of isolating switch direct supply and accumulator, if it is lower to detect the voltage that obtains; Explain that then this isolating switch power supply breaks down, and perhaps need change power supply.Can judge tentatively with respect to the change under the normal condition whether needs are changed power supply to circuit breaker operation mechanism, if do not need to change, then measure the divide-shut brake coil current according to operating voltage like this, confirm the trouble location of operating mechanism again through comparison.
Detecting device in the utility model can be a hand-held tester, not only possesses the function of test both opens device mechanical property, and smaller and more exquisite more portable than traditional mechanical property appearance.In conjunction with conventional grid switching operation; The operations staff inserts transformer and distribution power station control bus bar circuit with manual testing device; Inlet wire and outlet isolating switch are divided/closed in a scheduling distant place successively, can catch the current waveform of the branch/closing coil of all isolating switchs in this transformer and distribution power station successively, and the operations staff at the scene can be with current waveform that obtains and reference waveform contrast then; Draw the position that whether isolating switch need overhaul or need to confirm to overhaul, thereby instruct the maintenance strategy.
The detection technique of the utility model embodiment can replace the mechanical characteristic test of breaker mechanism light maintenance at the scene fully; Particularly in the inapplicable occasion of traditional mechanical characteristic appearance (as: inflatable switch cubicle); Use this commercial measurement isolating switch branch/closing time, three-phase not same period etc. key parameter; Can fill up the blank of distribution net equipment maintenance equipment, improve produced on-site efficient.
From above description, can find out that the utility model the above embodiments have realized following technique effect: can judge the fault of circuit breaker operation mechanism, and need not to cut off the power supply and to measure.In conjunction with conventional grid switching operation, to test and judge that every isolating switch only needs 1 operations staff, the time is merely 10 minutes, and isolating switch of traditional interruption maintenance then needs 2-3 people, 2-3 consuming time hour.Greatly improved on-the-spot labour productivity, also avoided because the distribution switchgear maintenance supercycle phenomenon that personnel and number of devices difference cause greatly.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. circuit breaker operation mechanism pick-up unit is characterized in that comprising:
First detection module is used to detect the divide-shut brake coil current of circuit breaker operation mechanism;
Current comparing module is used for the divide-shut brake coil current of said divide-shut brake coil current and predefined divide-shut brake coil current or detection last time is compared;
Fault determination module is used for confirming according to said comparative result the trouble location of said circuit breaker operation mechanism.
2. device according to claim 1 is characterized in that, also comprises:
Second detection module is used to detect the electric current of a major loop at isolating switch place;
Computing module was used for according to the galvanometer point counting/closing time of a said major loop and three-phase same period not.
3. device according to claim 1 is characterized in that, also comprises: the 3rd detection module is used to detect the voltage that controls of said circuit breaker operation mechanism.
4. according to each described device in the claim 1 to 3, it is characterized in that said first detection module comprises: detection sub-module, be used to respond user's operation, detect the divide-shut brake coil current of said circuit breaker operation mechanism.
5. device according to claim 4 is characterized in that, also comprises: display module is used for said divide-shut brake coil current is shown to said user.
6. circuit breaker operation mechanism detection system is characterized in that comprising: circuit breaker operation mechanism and circuit breaker operation mechanism pick-up unit, wherein,
Said circuit breaker operation mechanism pick-up unit is connected to said circuit breaker operation mechanism, comprising:
First detection module is used to detect the divide-shut brake coil current of said circuit breaker operation mechanism;
Current comparing module is used for the divide-shut brake coil current of said divide-shut brake coil current and predefined divide-shut brake coil current or detection last time is compared;
Fault determination module is used for confirming according to said comparative result the trouble location of said circuit breaker operation mechanism.
7. system according to claim 6 is characterized in that, said circuit breaker operation mechanism pick-up unit also comprises:
Second detection module is used to detect the electric current of a major loop at isolating switch place;
Computing module was used for according to the galvanometer point counting/closing time of a said major loop and three-phase same period not.
8. system according to claim 6 is characterized in that, said circuit breaker operation mechanism pick-up unit also comprises: the 3rd detection module is used to detect the voltage that controls of said circuit breaker operation mechanism.
9. according to each described system in the claim 6 to 8, it is characterized in that said first detection module comprises: detection sub-module, be used to respond user's operation, detect the divide-shut brake coil current of said circuit breaker operation mechanism.
10. system according to claim 9 is characterized in that, said circuit breaker operation mechanism pick-up unit also comprises: display module is used for said divide-shut brake coil current is shown to said user.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012200609707U CN202443105U (en) | 2012-02-22 | 2012-02-22 | Device and system for detecting operation mechanism of breaker |
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| CN2012200609707U CN202443105U (en) | 2012-02-22 | 2012-02-22 | Device and system for detecting operation mechanism of breaker |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931023A (en) * | 2012-11-13 | 2013-02-13 | 北京交通大学 | Realization of control method and device for vacuum circuit breaker based on coil current |
| CN103854711A (en) * | 2012-12-07 | 2014-06-11 | 中国核动力研究设计院 | Method for analyzing turn-off time performance of shut-down circuit breaker of reactor |
| CN104267343A (en) * | 2014-10-17 | 2015-01-07 | 广东电网有限责任公司佛山供电局 | Method and device for diagnosing failure state of circuit breaker |
| CN104656011A (en) * | 2013-11-19 | 2015-05-27 | 国家电网公司 | Circuit and system for monitoring |
| CN104765001A (en) * | 2015-04-27 | 2015-07-08 | 句容华源电器设备有限公司 | Spring energy storage type circuit breaker closing iron core non-action fault detection method |
| CN105242199A (en) * | 2015-09-28 | 2016-01-13 | 国家电网公司 | Real-time diagnosis method and apparatus of opening-closing coil state of high-voltage breaker |
| CN105548876A (en) * | 2016-01-28 | 2016-05-04 | 国网北京市电力公司 | Method and device for detection of mechanical features of disconnection switch |
| CN105572583A (en) * | 2016-03-10 | 2016-05-11 | 保定市水木电器设备有限公司 | Spring operating mechanism detection device |
| CN105807162A (en) * | 2016-03-25 | 2016-07-27 | 神华集团有限责任公司 | Action monitoring circuit for secondary circuits in electrical system and terminal strip |
| CN106199415A (en) * | 2016-07-06 | 2016-12-07 | 广东电网有限责任公司电力调度控制中心 | Bus disconnecting link method for detecting position and system during mother is fallen based on main station system heat |
| CN104406785B (en) * | 2014-12-05 | 2017-06-06 | 北京合锐清合电气有限公司 | A kind of on-Line Monitor Device applied on intelligent ring main unit |
| CN107490761A (en) * | 2017-08-28 | 2017-12-19 | 浙江方圆电气设备检测有限公司 | The detection method and system of a kind of circuit breaker operation mechanism |
| CN107643482A (en) * | 2017-07-25 | 2018-01-30 | 陕西斯瑞新材料股份有限公司 | A kind of on off state judgment models based on coil current waveform |
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2012
- 2012-02-22 CN CN2012200609707U patent/CN202443105U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931023B (en) * | 2012-11-13 | 2015-05-27 | 北京交通大学 | Realization of control method and device for vacuum circuit breaker based on coil current |
| CN102931023A (en) * | 2012-11-13 | 2013-02-13 | 北京交通大学 | Realization of control method and device for vacuum circuit breaker based on coil current |
| CN103854711B (en) * | 2012-12-07 | 2016-06-29 | 中国核动力研究设计院 | A kind of method of analytical reactions heap shutdown breaker opening times performance |
| CN103854711A (en) * | 2012-12-07 | 2014-06-11 | 中国核动力研究设计院 | Method for analyzing turn-off time performance of shut-down circuit breaker of reactor |
| CN104656011A (en) * | 2013-11-19 | 2015-05-27 | 国家电网公司 | Circuit and system for monitoring |
| CN104267343A (en) * | 2014-10-17 | 2015-01-07 | 广东电网有限责任公司佛山供电局 | Method and device for diagnosing failure state of circuit breaker |
| CN104406785B (en) * | 2014-12-05 | 2017-06-06 | 北京合锐清合电气有限公司 | A kind of on-Line Monitor Device applied on intelligent ring main unit |
| CN104765001A (en) * | 2015-04-27 | 2015-07-08 | 句容华源电器设备有限公司 | Spring energy storage type circuit breaker closing iron core non-action fault detection method |
| CN105242199A (en) * | 2015-09-28 | 2016-01-13 | 国家电网公司 | Real-time diagnosis method and apparatus of opening-closing coil state of high-voltage breaker |
| CN105548876A (en) * | 2016-01-28 | 2016-05-04 | 国网北京市电力公司 | Method and device for detection of mechanical features of disconnection switch |
| CN105548876B (en) * | 2016-01-28 | 2018-07-27 | 国网北京市电力公司 | A kind of disconnecting switch mechanical property detection method and device |
| CN105572583A (en) * | 2016-03-10 | 2016-05-11 | 保定市水木电器设备有限公司 | Spring operating mechanism detection device |
| CN105807162A (en) * | 2016-03-25 | 2016-07-27 | 神华集团有限责任公司 | Action monitoring circuit for secondary circuits in electrical system and terminal strip |
| CN106199415A (en) * | 2016-07-06 | 2016-12-07 | 广东电网有限责任公司电力调度控制中心 | Bus disconnecting link method for detecting position and system during mother is fallen based on main station system heat |
| CN106199415B (en) * | 2016-07-06 | 2019-02-15 | 广东电网有限责任公司电力调度控制中心 | Female process median generatrix disconnecting link method for detecting position and system are fallen based on main station system heat |
| CN107643482A (en) * | 2017-07-25 | 2018-01-30 | 陕西斯瑞新材料股份有限公司 | A kind of on off state judgment models based on coil current waveform |
| CN107490761A (en) * | 2017-08-28 | 2017-12-19 | 浙江方圆电气设备检测有限公司 | The detection method and system of a kind of circuit breaker operation mechanism |
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Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: BEIJING ELECTRIC POWER CORP. Effective date: 20130531 Owner name: BEIJING ELECTRIC POWER CORP. Effective date: 20130531 |
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Free format text: CORRECT: ADDRESS; FROM: 100031 XICHENG, BEIJING TO: 100031 DONGCHENG, BEIJING |
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Effective date of registration: 20130531 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Beijing Electric Power Corp. Address before: 100031 Beijing Qianmen West Street, Xicheng District, No. 41 Patentee before: Beijing Electric Power Corp. |
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Granted publication date: 20120919 |