CN203535118U - Device for measuring dynamic contact resistance among contacts of high voltage circuit breaker - Google Patents
Device for measuring dynamic contact resistance among contacts of high voltage circuit breaker Download PDFInfo
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- CN203535118U CN203535118U CN201320626462.5U CN201320626462U CN203535118U CN 203535118 U CN203535118 U CN 203535118U CN 201320626462 U CN201320626462 U CN 201320626462U CN 203535118 U CN203535118 U CN 203535118U
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- 238000000034 method Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 238000013523 data management Methods 0.000 claims abstract description 12
- 230000011664 signaling Effects 0.000 claims description 21
- 238000012545 processing Methods 0.000 abstract description 7
- 230000003750 conditioning effect Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model relates to a device for measuring dynamic contact resistance among contacts of a high voltage circuit breaker. The device is formed by connection of a zero internal resistance DC power supply (1), a four-pole method measurement contact resistance (2), a circuit breaker closing-opening control module (3), a fracture operation time measurement module (4), a contact travel measurement module (5), a signal conditioning and high-speed high-precision A/D conversion module (6), a signal processing or control unit (7) and a high voltage circuit breaker contact dynamic resistance data management system (9). The device can be used for assessing contact states among moving and static contacts of each phase of the high voltage circuit breaker in the case that the high voltage circuit breaker is not disintegrated and providing powerful reference for repairing a high voltage circuit breaker fracture. Through trial production and trial run, products are proved to be good in results, easy to use and safe and reliable.
Description
Technical field
The utility model belongs to breaker technical field, be specifically related to dynamic contact resistance measurement mechanism between a kind of High Voltage Circuit Breaker Contacts, be applicable to not disassemble under condition dynamic contact resistance between SF6 type contact of breaker is measured, think that contact and arc-chutes state carry out analysis and evaluation foundation is provided.
Background technology
Along with the rapid raising of economic develop rapidly and living standard, people have higher requirement to power equipment reliability of operation.The primary cut-out of serving as protection and control function in electric system is the equipment that is difficult to ensure card reliability most, and quantity is many, maintenance amount is large, expense is high.Once break down, lose inestimable.And so far to SF
6the maintenance of type isolating switch still follows relevant provision that manufacturer recommends, and various isolating switchs need be determined different maintenance schemes according to different operating modes; And, it is the value while cut-offfing specified maximum short circuit current that isolating switch manufacturer recommends trouble hunting condition, be not inconsistent with isolating switch practical operation situation, data show, isolating switch rarely cut-offs the situation of specified maximum short circuit current throughout one's life, therefore, in the situation that cannot determining the actual dropout current size of arc-extinguishing chamber of circuit breaker and electrical wear, arc-extinguishing chamber of circuit breaker is blindly disintegrated, not only can cause unnecessary power failure, waste of manpower, financial resources, and can make originally intact isolating switch instead because maintenance is broken down.Simultaneously until also never there is at present special measurement mechanism and appraisal procedure for dynamic contact resistance between High Voltage Circuit Breaker Contacts.
Utility model content
The technical problems to be solved in the utility model is that the defect existing for prior art, provides dynamic contact resistance measurement mechanism between a kind of High Voltage Circuit Breaker Contacts.This device can be measured the curve that the contact resistance of High Voltage Circuit Breaker Contacts in close-separating brake motion process changes along with time and stroke, for contact state and arc-chutes state being carried out to analysis and evaluation in the situation that not disassembling isolating switch, provides foundation.And then determine whether to disassemble maintenance, avoid the waste of manpower and materials, improve safe operation of power system level.
The technical solution of the utility model is, dynamic contact resistance measurement mechanism between a kind of High Voltage Circuit Breaker Contacts providing, referring to accompanying drawing 1, by zero internal resistance direct supply 1, four-electrode method, measure contact resistance 2, close-separating brake of isolating switch control module 3, fracture motion time measurement module 4, contact travel measurement module 5, signal condition and high-speed, high precision A/D conversion module 6, signal processing or control module 7, High Voltage Circuit Breaker Contacts dynamic resistance data management system 9 and connect to form.The output terminal of the wherein said zero internal resistance direct supply 1 described four-electrode method that is connected in parallel is measured the input end of input end, signal condition and the high-speed, high precision A/D conversion module 6 of contact resistance 2, and the signaling interface of this zero internal resistance direct supply 1 is connected with the signaling interface of described four-electrode method measurement contact resistance 2; The output terminal that described four-electrode method is measured contact resistance 2 the be connected in parallel input end of described fracture motion time measurement module 4 and the input end of contact travel measurement module 5; The output terminal of close-separating brake of described isolating switch control module 3 connects the input end that described four-electrode method is measured contact resistance 2, and the signaling interface of close-separating brake of this isolating switch control module 3 processes with described signal or the signaling interface of control module 7 is connected; The input end of signal condition and high-speed, high precision A/D conversion module 6 described in the output termination of described fracture motion time measurement module 4; The output terminal of described contact travel measurement module 5 also connects the input end of described signal condition and high-speed, high precision A/D conversion module 6, the signaling interface of this signal condition and high-speed, high precision A/D conversion module 6, processes with described signal or the signaling interface of control module 7 is connected; Described signal is processed or the PORT COM 8 of control module 7 is connected with the signaling interface of described High Voltage Circuit Breaker Contacts dynamic resistance data management system 9.
When between the of the present utility model a kind of High Voltage Circuit Breaker Contacts forming thus, dynamic contact resistance measurement mechanism uses, by the output current line of zero internal resistance direct supply 1 and signal measurement pressure-wire according to the requirement of four-electrode method, be connected on respectively the dynamic/static contact two ends of the isolating switch of close-separating brake of isolating switch control module 3, connecting close-separating brake of isolating switch control module 3 action controls goes between to the on/off switch control node of close-separating brake of isolating switch control module 3, the fracture two ends of close-separating brake control module 3 that the signal lead of fracture time measurement module 4 is connected to isolating switch, the signal lead of contact travel measurement module is connected to isolating switch and closes-moving component of separating brake control module 3, signal is processed or control module 7 sends close-separating brake control signal, 3 outputs of close-separating brake of isolating switch control module are controlled power supply to closing coil and the switching winding of close-separating brake of isolating switch control module 3, and trigger A/D sampling module simultaneously, dynamic contact resistance between the contact in close-separating brake of the isolating switch course of action of close-separating brake of collection isolating switch control module 3, actuation time and run-length data, obtain the relation curve of dynamic contact resistance and contact travel between contact, and the relation curve of dynamic contact resistance and contact working time.According to the specification of the current feed of configuration, the electric current maximum amplitude of testing for dynamic contact resistance between contact can reach 3000A.During operation, by signal, processed or control module 7 controls and trigger pip conditioning and high-speed, high precision A/D conversion module 6, complete the parameter measurements such as contact action time, displacement, contact Contact resistance simultaneously, through signal, process and obtain dynamic resistance-stroke curve and dynamic resistance-time curve, by High Voltage Circuit Breaker Contacts () historical data longitudinal comparison and the alternate data lateral comparison of primary cut-out fracture shown in relevant Fig. 1 of dynamic resistance data management system 9, carry out the judgement of contact Contact state.Concrete measurement operation is selected to carry out by mouse; Data can be printed, show and be preserved, and also can be transferred to by communication interface that data management system is carried out historical longitudinal data comparative analysis and alternate data across comparison is analyzed.
The beneficial effects of the utility model are: can in the situation that primary cut-out does not disintegrate, utilize this device to assess the contact condition between each phase dynamic/static contact of this primary cut-out, for the maintenance of the fracture of primary cut-out shown in Fig. 1 provides solid reference.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a specific embodiment of dynamic contact resistance measurement mechanism between a kind of High Voltage Circuit Breaker Contacts of the utility model, in figure, is denoted as:
1-zero internal resistance direct supply,
2-four-electrode method is measured contact resistance,
Close-separating brake of 3-isolating switch control module,
4-fracture motion time measurement module,
5-contact travel measurement module,
6-signal condition and high-speed, high precision A/D conversion module,
7-signal is processed or control module,
8-PORT COM,
9-High Voltage Circuit Breaker Contacts dynamic resistance data management system.
Embodiment:
Referring to an embodiment of dynamic contact resistance measurement mechanism between the utility model High Voltage Circuit Breaker Contacts shown in accompanying drawing 1, the general zero internal resistance direct supply that commercially available its internal resistance of zero internal resistance direct supply 1 employing of this embodiment is less than 1 micro-ohm is as contact Contact resistance test power supply; Four-electrode method is measured contact resistance 2 and is adopted commercially available general four-electrode method to measure contact resistance; Close-separating brake of isolating switch control module 3 adopts commercially available close-separating brake of general isolating switch control module; Fracture motion time measurement module 4 adopts commercially available general fracture motion time measurement module; Contact travel measurement module 5 adopts commercially available general contact travel measurement module; Signal condition and high-speed, high precision A/D conversion module 6 adopt commercially available universal signal conditioning and high-speed, high precision A/D conversion module; Signal is processed or control module 7 adopts commercially available general signal processing/controller; High Voltage Circuit Breaker Contacts dynamic resistance data management system 9 adopts online High Voltage Circuit Breaker Contacts dynamic resistance data management system;
Described zero internal resistance direct supply 1, four-electrode method are measured contact resistance 2, close-separating brake of isolating switch control module 3, fracture motion time measurement module 4, contact travel measurement module 5, signal condition and high-speed, high precision A/D conversion module 6, signal processing or control module 7, High Voltage Circuit Breaker Contacts dynamic resistance data management system 9 and with reference to connected mode shown in accompanying drawing 1, are connected to form dynamic contact resistance measurement mechanism between High Voltage Circuit Breaker Contacts by technique scheme.Wherein the output terminal of zero internal resistance direct supply 1 four-electrode method in parallel is measured the input end of input end, signal condition and the high-speed, high precision A/D conversion module 6 of contact resistance 2.The signaling interface of zero internal resistance direct supply 1 connects the signaling interface that four-electrode method is measured contact resistance 2; The input end of the output terminal fracture motion time measurement in parallel module 4 of four-electrode method measurement contact resistance 2 and the input end of contact travel measurement module 5; The output termination four-electrode method of close-separating brake of isolating switch control module 3 is measured the input end of contact resistance 2.The signaling interface of close-separating brake of isolating switch control module 3 connects the signaling interface of signal processing or control module 7; The input end of the output termination signal condition of fracture motion time measurement module 4 and high-speed, high precision A/D conversion module 6; The input end of the output termination signal condition of contact travel measurement module 5 and high-speed, high precision A/D conversion module 6.Signal condition and high-speed, high precision A/D change the signaling interface of module 6, connect the signaling interface of signal processing or control module 7; The PORT COM 8 of signal processing or control module 7 connects the signaling interface of High Voltage Circuit Breaker Contacts dynamic resistance data management system 9.
By dynamic contact resistance measurement mechanism product between the High Voltage Circuit Breaker Contacts of this embodiment forming above, through trial-production and trial run, be proved to be respond well, esy to use, safe and reliable, reach designing requirement completely.
Claims (1)
1. dynamic contact resistance measurement mechanism between a High Voltage Circuit Breaker Contacts, it is characterized in that, it is by zero internal resistance direct supply (1), four-electrode method is measured contact resistance (2), close-separating brake of isolating switch control module (3), fracture motion time measurement module (4), contact travel measurement module (5), signal condition and high-speed, high precision A/D conversion module (6), signal is processed or control module (7), High Voltage Circuit Breaker Contacts dynamic resistance data management system (9) connects to form, the output terminal of wherein said zero internal resistance direct supply (1) the described four-electrode method that is connected in parallel is measured the input end of contact resistance (2), the input end of signal condition and high-speed, high precision A/D conversion module (6), the signaling interface of this zero internal resistance direct supply (1) is connected with the signaling interface that described four-electrode method is measured contact resistance (2), the output terminal that described four-electrode method is measured contact resistance (2) the be connected in parallel input end of described fracture motion time measurement module (4) and the input end of contact travel measurement module (5), the output terminal of close-separating brake of described isolating switch control module (3) connects the input end that described four-electrode method is measured contact resistance (2), and the signaling interface of close-separating brake of this isolating switch control module (3) processes with described signal or the signaling interface of control module (7) is connected, the input end of signal condition and high-speed, high precision A/D conversion module (6) described in the output termination of described fracture motion time measurement module (4), the output terminal of described contact travel measurement module (5) also connects the input end of described signal condition and high-speed, high precision A/D conversion module (6), the signaling interface of this signal condition and high-speed, high precision A/D conversion module (6), also processes with described signal or the signaling interface of control module (7) is connected, described signal is processed or the PORT COM (8) of control module (7) is connected with the signaling interface of described High Voltage Circuit Breaker Contacts dynamic resistance data management system (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320626462.5U CN203535118U (en) | 2013-10-11 | 2013-10-11 | Device for measuring dynamic contact resistance among contacts of high voltage circuit breaker |
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| CN201320626462.5U CN203535118U (en) | 2013-10-11 | 2013-10-11 | Device for measuring dynamic contact resistance among contacts of high voltage circuit breaker |
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| CN203535118U true CN203535118U (en) | 2014-04-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301362A (en) * | 2015-11-02 | 2016-02-03 | 清华大学 | Portable large-current dynamic loop resistance detection device |
| CN105467309A (en) * | 2015-12-01 | 2016-04-06 | 天津市电力科技发展公司 | State evaluation method and maintenance strategy for contact of high-voltage circuit breaker |
| CN106443186A (en) * | 2016-08-31 | 2017-02-22 | 李全海 | Contact resistance test system |
| CN106814255A (en) * | 2015-11-27 | 2017-06-09 | 中国电力科学研究院 | A kind of SF6 breakers dynamic contact resistance detection means |
| CN109596892A (en) * | 2018-12-20 | 2019-04-09 | 陕西意联电气设备有限公司 | A kind of combined electric switches conductive loop resistance method for fast measuring and device |
-
2013
- 2013-10-11 CN CN201320626462.5U patent/CN203535118U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301362A (en) * | 2015-11-02 | 2016-02-03 | 清华大学 | Portable large-current dynamic loop resistance detection device |
| CN105301362B (en) * | 2015-11-02 | 2018-02-09 | 深圳供电局有限公司 | Walkie high-current dynamic loop resistor detecting device |
| CN106814255A (en) * | 2015-11-27 | 2017-06-09 | 中国电力科学研究院 | A kind of SF6 breakers dynamic contact resistance detection means |
| CN105467309A (en) * | 2015-12-01 | 2016-04-06 | 天津市电力科技发展公司 | State evaluation method and maintenance strategy for contact of high-voltage circuit breaker |
| CN106443186A (en) * | 2016-08-31 | 2017-02-22 | 李全海 | Contact resistance test system |
| CN109596892A (en) * | 2018-12-20 | 2019-04-09 | 陕西意联电气设备有限公司 | A kind of combined electric switches conductive loop resistance method for fast measuring and device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180919 Address after: No. 398, Xinshao East Road, Tianxin District, Changsha, Hunan, Hunan Co-patentee after: STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED ELECTRIC POWER Research Institute Patentee after: STATE GRID HUNAN ELECTRIC POWER Co.,Ltd. Co-patentee after: State Grid Corporation of China Address before: 100033 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Co-patentee before: STATE GRID HUNAN ELECTRIC POWER COMPANY Research Institute Patentee before: State Grid Corporation of China Co-patentee before: WUHAN YITIAN TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
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| CX01 | Expiry of patent term |