CN103969576A - Dynamic characteristic analyzer for dual-grounding circuit breaker - Google Patents
Dynamic characteristic analyzer for dual-grounding circuit breaker Download PDFInfo
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- CN103969576A CN103969576A CN201410167835.6A CN201410167835A CN103969576A CN 103969576 A CN103969576 A CN 103969576A CN 201410167835 A CN201410167835 A CN 201410167835A CN 103969576 A CN103969576 A CN 103969576A
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Abstract
The invention relates to a dynamic characteristic analyzer for a dual-grounding circuit breaker. The dynamic characteristic analyzer comprises signal generators, current samplers, testing wires, a host and a signal generation and collection box. The host is connected with the signal generation and collection box through a four-core shielded wire. The signal generation and collection box is respectively connected with the signal generators and the current samplers through the testing wires. The signal generators and the current samplers are connected with static contact side grounding disconnectors respectively. When a high-voltage circuit breaker test is carried out through the dynamic characteristic analyzer, dynamic characteristics such as the opening time, the closing time, the corresponding period, the speed, the opening voltage and the closing voltage of the circuit breaker are tested under the situation that the two sides of the circuit breaker are grounded, safety of a testing device and an operator can be ensured, operation is convenient, the time spent by disassembling ground wires on one side or pulling the grounding disconnectors on one side open is shortened, and it is ensured that safety measures on a working site are complete.
Description
Technical field
The present invention relates to a kind of tester, especially relate to a kind of pair of earthing breaker Dynamic Characteristics instrument.
Background technology
At present, during known isolating switch test, if will carry out testing mechanical characteristic to isolating switch, must guarantee that isolating switch can only have one end ground connection, and isolating switch is when interruption maintenance, ground connection all will be carried out in isolating switch two ends, to prevent unexpected incoming call and to guarantee that maintainer is not subject to faradic injury, because the earth conducting resistance is very little, be about 200 milliohms, when normal circuit breaker tester detects fracture deciliter situation, no matter fracture is to disconnect or closure state, all detects as fracture closure state.Isolating switch measurement device, in order to measure fracture deciliter state, must pull open ground, fracture one end cutter or the ground wire of a fracture one end is removed, then measure, and this had both increased workload, had increased again potential safety hazard.
Summary of the invention
In order to overcome the deficiency of existing isolating switch dynamic characteristics tester, the invention provides a kind of pair of earthing breaker Dynamic Characteristics instrument, this analyser can be measured accurately and quickly the parameters such as breaker fracture on/off switch time, the same period, spring the in the situation that of primary cut-out two sides earth, reduce human cost, reduce potential safety hazard.
The technical solution adopted for the present invention to solve the technical problems is:
Two earthing breaker Dynamic Characteristics instrument, include signal generator, current sampler, p-wire, main frame, signal generation and vasculum, described main frame and signal occur and vasculum between by four-core shielding line, be connected, signal occurs to be connected with current sampler with signal generator respectively by p-wire with vasculum, and signal generator is connected with static contact side grounding switch respectively with current sampler.
Described signal generator is calipers pulse current detector.
Described current sampler is pincerlike current sensor.
Advantage and beneficial effect that the present invention has are:
When the present invention tests at primary cut-out, can all ground connection in the situation that, to acting characteristics such as the opening time of isolating switch, closing time, the same period, speed, separating brake voltage, switching voltages, test in isolating switch both sides.Energy warranty test equipment and operating personnel's safety, simultaneously easy to operate, save the time of removing a side ground wire or pulling open a side grounding switch, can also guarantee the complete of operation field safety practice.Reduce service work personnel's labour intensity, eliminate the potential safety hazard of bringing because removing ground wire, avoid operating personnel's induced voltage to get an electric shock or cause induced voltage to damage testing tool, increase work efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the present invention's schematic diagram while being grounding switch ground connection in isolating switch both sides.
Fig. 2 is the present invention's schematic diagram while being ground connection in isolating switch both sides.
Fig. 3 is the present invention's instrument wiring schematic diagram while being grounding switch ground connection in isolating switch both sides.
Fig. 4 is the present invention's instrument wiring schematic diagram while being ground connection in isolating switch both sides
1. moving contact of breaker in figure, 2. circuit breaker static contact, 3. moving contact side grounding switch, 4. static contact side grounding switch, 5. signal generator, 6. induction current, 7. current sampler, 8. moving contact side joint ground wire, 9. static contact side joint ground wire, 10. p-wire, 11. signals occur and vasculum, 12. four-core shielding lines, 13. main frames, 14. cables, 15. grounded screens.
Embodiment
Two earthing breaker Dynamic Characteristics instrument, include signal generator 5, current sampler 7, p-wire 10, main frame 13, signal generation and vasculum 11, described main frame 13 and signal occur and vasculum 11 between by four-core shielding line 12, be connected, signal occurs to be connected with current sampler 7 with signal generator 5 respectively by p-wire 10 with vasculum 11, and signal generator is connected with static contact side grounding switch respectively with current sampler.
Described signal generator is calipers pulse current detector.
Described current sampler is pincerlike current sensor.
As shown in Figure 1,3, when isolating switch both sides adopt grounding switch ground connection, on the through-flow body of static contact side grounding switch 4, snap in calipers pulse current detector and form the fixed structure of open core coil loop holding-solid, form a winding of transformer, grounding switch is through-flow, and body forms secondary single-turn circular coil.
At the two ends of primary winding, apply by the audible communication power supply that signal occurs and vasculum 11 is launched, with Us, represent, set up electromagnetic field, for reaching regular hour resolution, select suitable supply frequency.
Secondary single-turn circular coil will produce a corresponding induction electromotive force and represent with Up.
Suppose that the loop resistance after switch closure is r, the resistance of auxiliary contact is R, so:
Induction current 6 before combined floodgate, represents with i, i=0;
Induction current 6 after main contact closes, represents with i, i=Up/r.
On the through-flow body of static contact side grounding switch 4, snap in current sampler 7, pincerlike current sensor namely, measures the induction current of secondary single turn conductor.Divide state, owing to there is no current return, electric current can not be set up, and the state of closing will produce electromagnetic coupled electric current.
The electromagnetic coupled electric current of testing is carried out to conventional high-speed sampling record ripple, obtain needed measured waveform.
Current waveform starts the moment of setting up, and is exactly the moment of contact conducting; Current waveform starts the moment disappearing, and is exactly the moment of contact disjunction.
The moving contact 1 of primary cut-out, static contact 2, the moving contact side grounding switch 3 being connected with moving contact 1, the static contact side grounding switch 4 being connected with static contact 2 and the common ring-shaped core forming in transformer model of earth mat 15 being connected with them, on the through-flow body of static contact side grounding switch 4, snap in current sampler 7 and signal generator, wherein signal generator 5 is equivalent to transformer primary side, and current sampler 7 is equivalent to transformer time limit.When primary cut-out closes a floodgate, above-mentioned ring-shaped core is closed, and transformer model is in running order, and current sampler 7 can collect signal, and is judged as breaker closing with this; When primary cut-out separating brake, above-mentioned ring-shaped core does not have closure, and transformer model is in off position, and current sampler 7 does not collect signal, and is judged as breaker open operation with this.
As shown in Figure 2,4, when isolating switch both sides adopt ground connection, the moving contact 1 of primary cut-out, static contact 2, the moving contact side joint ground wire 8 being connected with moving contact 1, the static contact side joint ground wire 9 being connected with static contact 2 and the common ring-shaped core forming in transformer model of earth mat 15 being connected with them, on the through-flow body of static contact side joint ground wire 9, snap in calipers pulse current detector 5 and pincerlike current sensor 7, all the other are identical with the situation when isolating switch both sides adopt grounding switch ground connection.
Claims (3)
1. pair earthing breaker Dynamic Characteristics instrument, it is characterized in that including signal generator, current sampler, p-wire, main frame, signal generation and vasculum, described main frame and signal occur and vasculum between by four-core shielding line, be connected, signal occurs to be connected with current sampler with signal generator respectively by p-wire with vasculum, and signal generator is connected with static contact side grounding switch respectively with current sampler.
2. according to claim 1 pair of earthing breaker Dynamic Characteristics instrument, is characterized in that described signal generator is calipers pulse current detector.
3. according to claim 1 pair of earthing breaker Dynamic Characteristics instrument, is characterized in that described current sampler is pincerlike current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167835.6A CN103969576A (en) | 2014-04-24 | 2014-04-24 | Dynamic characteristic analyzer for dual-grounding circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410167835.6A CN103969576A (en) | 2014-04-24 | 2014-04-24 | Dynamic characteristic analyzer for dual-grounding circuit breaker |
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| CN103969576A true CN103969576A (en) | 2014-08-06 |
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| CN201410167835.6A Pending CN103969576A (en) | 2014-04-24 | 2014-04-24 | Dynamic characteristic analyzer for dual-grounding circuit breaker |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777420A (en) * | 2015-04-07 | 2015-07-15 | 石家庄汉迪电子仪器有限公司 | High-voltage switch contact testing system and testing method thereof |
| US20150198667A1 (en) * | 2014-01-16 | 2015-07-16 | Vanguard Instruments Company, Inc. | Dual ground breaker testing system |
| CN105203947A (en) * | 2015-08-27 | 2015-12-30 | 国网安徽省电力公司阜阳供电公司 | Performance characteristic testing method of high-voltage circuit breaker |
| CN105388418A (en) * | 2015-12-22 | 2016-03-09 | 苏州工业园区海沃科技有限公司 | A circuit breaker action time test device and method based on transformer excitation characteristics |
| CN106249142A (en) * | 2016-10-18 | 2016-12-21 | 国网江苏省电力公司电力科学研究院 | A kind of extra-high voltage switch intelligent device for measuring |
| CN106646218A (en) * | 2017-02-10 | 2017-05-10 | 云南电网有限责任公司电力科学研究院 | Device for simulating high-voltage circuit breakers and method for simulating and testing same |
| CN106959415A (en) * | 2017-03-21 | 2017-07-18 | 武汉市欧睿科技有限公司 | High voltage switch dynamic characteristics method of testing based on bicyclic electric current |
| CN107340469A (en) * | 2017-06-08 | 2017-11-10 | 广东电网有限责任公司肇庆供电局 | A kind of GIS combination electric appliance dynamic characteristic test instrument and application method |
| CN108845251A (en) * | 2018-06-26 | 2018-11-20 | 国网黑龙江省电力有限公司绥化供电公司 | The GIS combination electric appliance comprehensive tester and test method of double-station disconnecting link |
| CN109298332A (en) * | 2018-11-29 | 2019-02-01 | 广东电网有限责任公司 | A kind of portable beaker characteristic test device |
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
| CN113138332A (en) * | 2021-03-29 | 2021-07-20 | 杭州西湖电子研究所 | Three-phase high-voltage circuit breaker integrated measurement method based on double-end grounding |
| CN113267722A (en) * | 2021-05-20 | 2021-08-17 | 国网安徽省电力有限公司检修分公司 | Method and system for testing double-end grounding opening and closing time of high-voltage circuit breaker |
| CN113671364A (en) * | 2021-08-17 | 2021-11-19 | 科大智能电气技术有限公司 | Automatic test system and method for complete set of action time of circuit breaker |
| CN113740726A (en) * | 2021-09-13 | 2021-12-03 | 广东电网有限责任公司 | Instrument for testing characteristics of multi-break circuit breaker and wiring method |
| CN114325114A (en) * | 2021-11-29 | 2022-04-12 | 云南电网有限责任公司昆明供电局 | Double-end grounding loop resistance testing method of disassembly-free grounding wire |
| WO2022227047A1 (en) * | 2021-04-30 | 2022-11-03 | Abb Schweiz Ag | Method for managing a breaker and controller of a breaker |
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| CN201281748Y (en) * | 2008-05-15 | 2009-07-29 | 陈书欣 | Tester for performance characteristic of direct current circuit breaker |
| CN102435942A (en) * | 2011-09-06 | 2012-05-02 | 武汉义天科技有限公司 | Electromagnetic induction system of high-tension switch fracture and test method thereof |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150198667A1 (en) * | 2014-01-16 | 2015-07-16 | Vanguard Instruments Company, Inc. | Dual ground breaker testing system |
| US9551752B2 (en) * | 2014-01-16 | 2017-01-24 | Vanguard Instruments Company, Inc. | Dual ground breaker testing system |
| CN104777420A (en) * | 2015-04-07 | 2015-07-15 | 石家庄汉迪电子仪器有限公司 | High-voltage switch contact testing system and testing method thereof |
| CN105203947A (en) * | 2015-08-27 | 2015-12-30 | 国网安徽省电力公司阜阳供电公司 | Performance characteristic testing method of high-voltage circuit breaker |
| CN105388418A (en) * | 2015-12-22 | 2016-03-09 | 苏州工业园区海沃科技有限公司 | A circuit breaker action time test device and method based on transformer excitation characteristics |
| CN105388418B (en) * | 2015-12-22 | 2018-07-24 | 苏州工业园区海沃科技有限公司 | Breaker actuation time tester based on mutual inductor excitation feature and its method |
| CN106249142A (en) * | 2016-10-18 | 2016-12-21 | 国网江苏省电力公司电力科学研究院 | A kind of extra-high voltage switch intelligent device for measuring |
| CN106646218A (en) * | 2017-02-10 | 2017-05-10 | 云南电网有限责任公司电力科学研究院 | Device for simulating high-voltage circuit breakers and method for simulating and testing same |
| CN106959415A (en) * | 2017-03-21 | 2017-07-18 | 武汉市欧睿科技有限公司 | High voltage switch dynamic characteristics method of testing based on bicyclic electric current |
| CN107340469B (en) * | 2017-06-08 | 2023-04-28 | 广东电网有限责任公司肇庆供电局 | GIS combined electrical activity characteristic test instrument and use method |
| CN107340469A (en) * | 2017-06-08 | 2017-11-10 | 广东电网有限责任公司肇庆供电局 | A kind of GIS combination electric appliance dynamic characteristic test instrument and application method |
| CN108845251A (en) * | 2018-06-26 | 2018-11-20 | 国网黑龙江省电力有限公司绥化供电公司 | The GIS combination electric appliance comprehensive tester and test method of double-station disconnecting link |
| CN109298332A (en) * | 2018-11-29 | 2019-02-01 | 广东电网有限责任公司 | A kind of portable beaker characteristic test device |
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
| CN113138332A (en) * | 2021-03-29 | 2021-07-20 | 杭州西湖电子研究所 | Three-phase high-voltage circuit breaker integrated measurement method based on double-end grounding |
| WO2022227047A1 (en) * | 2021-04-30 | 2022-11-03 | Abb Schweiz Ag | Method for managing a breaker and controller of a breaker |
| CN113267722A (en) * | 2021-05-20 | 2021-08-17 | 国网安徽省电力有限公司检修分公司 | Method and system for testing double-end grounding opening and closing time of high-voltage circuit breaker |
| CN113671364A (en) * | 2021-08-17 | 2021-11-19 | 科大智能电气技术有限公司 | Automatic test system and method for complete set of action time of circuit breaker |
| CN113740726A (en) * | 2021-09-13 | 2021-12-03 | 广东电网有限责任公司 | Instrument for testing characteristics of multi-break circuit breaker and wiring method |
| CN114325114A (en) * | 2021-11-29 | 2022-04-12 | 云南电网有限责任公司昆明供电局 | Double-end grounding loop resistance testing method of disassembly-free grounding wire |
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Application publication date: 20140806 |
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