CN111077445A - Circuit breaker anti-tripping tester - Google Patents

Circuit breaker anti-tripping tester Download PDF

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Publication number
CN111077445A
CN111077445A CN201911417625.7A CN201911417625A CN111077445A CN 111077445 A CN111077445 A CN 111077445A CN 201911417625 A CN201911417625 A CN 201911417625A CN 111077445 A CN111077445 A CN 111077445A
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CN
China
Prior art keywords
module
circuit breaker
tripping
power supply
microprocessor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911417625.7A
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Chinese (zh)
Inventor
付晨晓
丁瑞
张龙清
马永强
陈立威
王杰
马建文
沈亮
史维平
马晓琴
马珍珍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Ningxia Electric Power Co Wuzhong Power Supply Co
Original Assignee
State Grid Ningxia Electric Power Co Wuzhong Power Supply Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Ningxia Electric Power Co Wuzhong Power Supply Co filed Critical State Grid Ningxia Electric Power Co Wuzhong Power Supply Co
Priority to CN201911417625.7A priority Critical patent/CN111077445A/en
Publication of CN111077445A publication Critical patent/CN111077445A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Breakers (AREA)

Abstract

The invention discloses a circuit breaker anti-tripping tester which is used for solving the problems that circuit breaker anti-tripping test work is too complicated and time consumption is too long in the prior art. The method comprises the following steps: the device comprises a microprocessor module, a display module, a timing module, a time comparison module and a power supply module; the pair of auxiliary contacts, the opening contact and the closing contact of the circuit breaker are electrically connected with the microprocessor module, the normally closed contact of the anti-tripping relay is connected in series in the closing loop of the circuit breaker and used for cutting off the closing loop, the normally open contact of the anti-tripping relay is connected in parallel in the anti-tripping loop and used for starting the anti-tripping relay, the pair of auxiliary contacts of the anti-tripping relay is electrically connected with the microprocessor module, the power supply module is respectively connected with the circuit breaker and the microprocessor module, and the display module, the timing module and the time comparison module are all connected with the microprocessor module. The automatic feeding device has the beneficial effects that the labor intensity of workers is reduced, and the working efficiency is improved.

Description

Circuit breaker anti-tripping tester
Technical Field
The invention relates to the technical field of power equipment, in particular to an anti-tripping tester for a circuit breaker.
Background
When the breaker is switched on a permanent fault circuit, the relay protection acts, and the breaker trips; if the closing command of the breaker is not released at the moment, the breaker is closed again, and the repeated on-off and on-off of the breaker are called breaker jump. The occurrence of jumping condition may cause serious accident of explosion of the circuit breaker when burning loss of the moving contact and the static contact in the arc extinguish chamber of the circuit breaker is serious. The anti-jumping device, i.e., the anti-jumping device, must be installed for a possible closing jumping problem of the circuit breaker.
The anti-tripping circuit of the circuit breaker is realized by an anti-tripping relay, a normally open node is connected in the anti-tripping circuit in parallel, and the anti-tripping relay is started when the closing circuit has a fault. The normally closed node is connected in series in a closing loop of the circuit breaker and is mainly used for cutting off the closing loop and preventing the circuit breaker from being closed again due to a fault of the closing loop.
The traditional inspection mode has no special test instrument, needs test personnel to use the circuit breaker characteristic tester for auxiliary test, can not simulate the fault state of the circuit breaker, can only utilize the opening and closing control channel and two pairs of test time channels of the circuit breaker characteristic tester, and measures the action time of the anti-tripping relay and the circuit breaker auxiliary switch through multiple tests. The problems lead to the traditional test method, time and labor are wasted, accuracy is low, certain potential safety hazards exist, and the anti-tripping test work flow of the circuit breaker is too complicated and time-consuming and too long.
Disclosure of Invention
The embodiment of the invention provides a circuit breaker anti-tripping tester, which is used for solving the problems of excessively complicated circuit breaker anti-tripping test work and excessively long consumed time in the prior art.
The embodiment of the invention provides a circuit breaker anti-tripping tester, which comprises: the device comprises a microprocessor module, a display module, a timing module, a time comparison module and a power supply module; the pair of auxiliary contacts, the opening contact and the closing contact of the circuit breaker are electrically connected with the microprocessor module, the normally closed contact of the anti-tripping relay is connected in series in the closing loop of the circuit breaker and used for cutting off the closing loop, the normally open contact of the anti-tripping relay is connected in parallel in the anti-tripping loop and used for starting the anti-tripping relay, the pair of auxiliary contacts of the anti-tripping relay is electrically connected with the microprocessor module, the power supply module is respectively connected with the circuit breaker and the microprocessor module, and the display module, the timing module and the time comparison module are all connected with the microprocessor module.
Preferably, the method comprises the following steps: the power supply module is connected with the microprocessor module through the first power supply conversion module and is connected with the circuit breaker through the second power supply conversion module.
Preferably, the method comprises the following steps: the first power conversion module is a GZM-U25S24 switching power supply, and the second power conversion module is an S-480-250 switching power supply.
Preferably, the method comprises the following steps: the microprocessor module is an ARMAT91SAM3U4E system board.
Preferably, the method comprises the following steps: the display module is a TFT liquid crystal display.
The beneficial effects of the invention include: this circuit breaker anti-bounce tester is applicable to all circuit breakers, and small, and portable, and is easy to operate, sufficient withstand voltage has, the state of separating brake combined floodgate when can simulating the circuit breaker trouble, measure the action time of circuit breaker auxiliary contact and prevent bouncing relay's action time simultaneously, whether qualified through the comparison this circuit breaker prevent bouncing performance, and after using the device, the circuit breaker prevent bouncing test work's time by 70 minutes before fall to 30 minutes, staff's intensity of labour has significantly reduced, and work efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a circuit breaker anti-tripping tester in an embodiment of the invention;
fig. 2 is a schematic diagram of a test line in the circuit breaker anti-tripping tester in the embodiment of the invention;
fig. 3 is a logic diagram of a test mode of the circuit breaker anti-tripping tester in the embodiment of the invention.
Detailed Description
The embodiment of the invention provides an anti-tripping tester for a circuit breaker, and the preferred embodiment of the invention is described below by combining the attached drawings of the specification.
Referring to fig. 1-3, a circuit breaker anti-trip tester includes: the device comprises a microprocessor module 1, a display module 5, a timing module, a time comparison module and a power supply module 4; a pair of auxiliary contacts, a separating brake contact and a closing contact of the circuit breaker 2 are electrically connected with the microprocessor module 1, a normally closed contact of the anti-tripping relay 3 is connected in series in a closing loop of the circuit breaker 2 and used for cutting off the closing loop, a normally open contact of the anti-tripping relay 3 is connected in parallel in the anti-tripping loop and used for starting the anti-tripping relay 3, a pair of auxiliary contacts of the anti-tripping relay 3 is electrically connected with the microprocessor module 1, the power supply module 4 is respectively connected with the circuit breaker 2 and the microprocessor module 1, and the display module 5, the timing module and the time comparison module are all connected with the microprocessor module.
The power module 4 is connected to the microprocessor module 1 through a first power conversion module 6 and to the circuit breaker 2 through a second power conversion module 7. The first power conversion module 6 is a GZM-U25S24 switching power supply, and the second power conversion module 7 is an S-480-250 switching power supply. The microprocessor module 1 is an ARMAT91SAM3U4E system board. The display module 5 is a TFT liquid crystal display.
Specifically, the use method of the anti-tripping tester for the circuit breaker 2 comprises the following steps: a pair of auxiliary contacts of the circuit breaker 2 is connected into the microprocessor module 1, the opening contact, the closing contact and the public ground end of the circuit breaker 2 are connected onto an interface of a tester through a novel connecting wire, and a pair of auxiliary contacts of the anti-tripping relay 3 is also electrically connected with the microprocessor module 1; when the microprocessor module 1 is used for simulating the fault of the circuit breaker 2, an opening signal and a closing signal are simultaneously given to the circuit breaker 2 through an opening contact and a closing contact, and after the circuit breaker 2 is opened under the simulated fault, the action time of an auxiliary contact of the circuit breaker 2 after the opening signal and the closing signal are sent is counted through a timing module; meanwhile, the circuit breaker 2 generates jumping under simulated faults due to various reasons, namely a closing signal is received, under the condition that the anti-tripping relay 3 exists, a normally open contact of the anti-tripping relay 3 is closed, after the anti-tripping loop acts, a normally closed node of the anti-tripping relay 3 is opened, the closing loop of the circuit breaker 2 is cut off, the circuit breaker 2 is prevented from being closed, in the process, a timing module counts the time from the opening of an auxiliary node of the anti-tripping relay 3 from the circuit breaker 2 to the action of the anti-tripping relay 3, a time comparison module compares the opening time of the circuit breaker 2 after receiving the opening and closing signal with the action time of the anti-tripping relay 3 after opening the circuit breaker 2, if the opening time of the circuit breaker 2 after receiving the opening and closing signal is greater than the action time of the anti-tripping relay 3 after opening from the circuit breaker 2, the test result is judged to be qualified, and the action time Ams of the anti-tripping relay 3 is displayed on a, the circuit breaker 2 has the auxiliary switch (auxiliary contact) action time Bms, and the test result is qualified (the starting time of the anti-tripping relay 3 is less than the auxiliary switch action time).
Because no special test wire exists, the existing test wire is not matched with a test element, a simple test wire needs to be manufactured on site, the consumed test time is 6.5min, the self-made test wire is connected with the wire clamp, and the exposed part of the wire clamp can cause the risk of electric shock of a tester; the contact area of the wire clamp and the test wire is small, poor contact of the test wire is easily caused, and the voltage deviation dispersion degree is large; the average voltage deviation rate of the existing connection mode is 7.13%, which is obviously larger than the requirement of standard test voltage (less than or equal to +/-5%) of test equipment. The circuit breaker 2 and prevent jumping relay 3 and circuit breaker 2 and prevent that the line part of jumping the tester adopts novel test wire, and novel test wire includes that a terminal head bends 90 degrees pin type plug, and the plug is connected with the plug-in terminal, and a plug that adds the elongated promptly, the both ends of test wire are the terminal head 90 degrees pin type plug of bending on one side, and the other end is the plug-in terminal. 1. The lengthened pin type plug is not only suitable for the wiring end of the relay, but also suitable for the wiring hole of the terminal row without changing wires. 2. After the pin-type plug is made to 90 degrees, the pin-type plug can better adapt to the condition that the space around the wiring end or the wiring hole of the terminal strip is narrow and the special condition that the wiring end goes deep into the mechanism box, and has stronger applicability. 3. After the pin-type plug is connected with the wiring terminal, the female head at the tail part can be easily connected with a test wire, and the operation is convenient.
The working power supply of the microprocessor module 1 is a standard direct current 5.5V direct current power supply, the opening and closing brake voltage of the circuit breaker 2 is a 250V adjustable direct current power supply, and the power supply module 4 adopts 220V alternating current commercial power and converts the commercial power to proper voltage through the power supply conversion module to supply power for the system and the circuit breaker 2.

Claims (5)

1. The utility model provides a circuit breaker anti-bounce tester which characterized in that includes: the device comprises a microprocessor module, a display module, a timing module, a time comparison module and a power supply module; the pair of auxiliary contacts, the opening contact and the closing contact of the circuit breaker are electrically connected with the microprocessor module, the normally closed contact of the anti-tripping relay is connected in series in the closing loop of the circuit breaker and used for cutting off the closing loop, the normally open contact of the anti-tripping relay is connected in parallel in the anti-tripping loop and used for starting the anti-tripping relay, the pair of auxiliary contacts of the anti-tripping relay is electrically connected with the microprocessor module, the power supply module is respectively connected with the circuit breaker and the microprocessor module, and the display module, the timing module and the time comparison module are all connected with the microprocessor module.
2. The circuit breaker trip protection tester of claim 1, comprising: the power supply module is connected with the microprocessor module through the first power supply conversion module and is connected with the circuit breaker through the second power supply conversion module.
3. The circuit breaker trip protection tester of claim 2, comprising: the first power conversion module is a GZM-U25S24 switching power supply, and the second power conversion module is an S-480-250 switching power supply.
4. The circuit breaker trip protection tester of claim 1, comprising: the microprocessor module is an ARMAT91SAM3U4E system board.
5. The circuit breaker trip protection tester of claim 1, comprising: the display module is a TFT liquid crystal display.
CN201911417625.7A 2019-12-31 2019-12-31 Circuit breaker anti-tripping tester Pending CN111077445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911417625.7A CN111077445A (en) 2019-12-31 2019-12-31 Circuit breaker anti-tripping tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911417625.7A CN111077445A (en) 2019-12-31 2019-12-31 Circuit breaker anti-tripping tester

Publications (1)

Publication Number Publication Date
CN111077445A true CN111077445A (en) 2020-04-28

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CN201911417625.7A Pending CN111077445A (en) 2019-12-31 2019-12-31 Circuit breaker anti-tripping tester

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112067984A (en) * 2020-09-03 2020-12-11 国家电网有限公司 Non-full-phase function testing device for circuit breaker
CN112986815A (en) * 2021-04-30 2021-06-18 帝森克罗德集团有限公司 Circuit and method for testing anti-tripping loop of circuit breaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201663094U (en) * 2010-02-04 2010-12-01 宁波华通电器集团股份有限公司 Vacuum circuit breaker
CN107290658A (en) * 2017-07-13 2017-10-24 国网浙江省电力公司绍兴供电公司 A kind of Anti-jump Circuit of Breaker method of testing
CN108919107A (en) * 2018-06-14 2018-11-30 国网宁夏电力有限公司中卫供电公司 A kind of anti-jump test device of breaker
CN109782657A (en) * 2018-12-26 2019-05-21 河南平高电气股份有限公司 A kind of circuit-breaker switching on-off integrated control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201663094U (en) * 2010-02-04 2010-12-01 宁波华通电器集团股份有限公司 Vacuum circuit breaker
CN107290658A (en) * 2017-07-13 2017-10-24 国网浙江省电力公司绍兴供电公司 A kind of Anti-jump Circuit of Breaker method of testing
CN108919107A (en) * 2018-06-14 2018-11-30 国网宁夏电力有限公司中卫供电公司 A kind of anti-jump test device of breaker
CN109782657A (en) * 2018-12-26 2019-05-21 河南平高电气股份有限公司 A kind of circuit-breaker switching on-off integrated control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112067984A (en) * 2020-09-03 2020-12-11 国家电网有限公司 Non-full-phase function testing device for circuit breaker
CN112986815A (en) * 2021-04-30 2021-06-18 帝森克罗德集团有限公司 Circuit and method for testing anti-tripping loop of circuit breaker

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