CN109298329A - A kind of circuit-breaker switching on-off test method - Google Patents
A kind of circuit-breaker switching on-off test method Download PDFInfo
- Publication number
- CN109298329A CN109298329A CN201811407466.8A CN201811407466A CN109298329A CN 109298329 A CN109298329 A CN 109298329A CN 201811407466 A CN201811407466 A CN 201811407466A CN 109298329 A CN109298329 A CN 109298329A
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- China
- Prior art keywords
- signal
- frequency
- circuit
- test method
- breaker switching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
Abstract
The present invention relates to power equipment test method technical fields, more specifically, it is related to a kind of circuit-breaker switching on-off test method, the following steps are included: S101: applying high-frequency signal injection in disconnect switch side, S102: S103: acquisition sensor current signal judges disconnect switch opening and closing state and test branch wire time according to faradic state.Accurately circuit-breaker switching on-off can be measured, and easy to operate, reduce the risk of operation, improve the safety of operation.
Description
Technical field
The present invention relates to power equipment test method technical fields, test more particularly, to a kind of circuit-breaker switching on-off
Method.
Background technique
High-voltage circuitbreaker bears control and protection dual role in the power system, and the quality of state directly affects
The safe operation of electric system.The switching on and off time of high-tension switch gear and alternate same period performance, except directly affecting switch just
Normal division function and safe operation are outer, are also relate to the safe switching of system other equipment, the height of internal overvoltage, to its into
Row correctly measures significant.Common brake switch tester is to apply positive supply to one end of fracture at present, fracture it is another
End connects the earth by earthing switch and is formed into a loop, and the switching on and off movement of breaker is the on-off in above-mentioned circuit.Pass through sampling
The on-off moment in circuit measures the branch wire time of breaker.
Traditional test method need to use the two sides for the port that primary connection is connected to breaker, therefore it is required that breaker
Fracture at least side is in open-circuit condition and just can be carried out.Part combined electrical apparatus is switched since breaker two sides are without leading point, needs mother
Line has a power failure and is unlocked operation, is tested with adjacent outgoing line interval, wherein can be related to difficult, the quiet and comfortable full blast danger of increase that has a power failure
The problems such as.And part breaker is in open-circuit condition to meet test condition at least side, needs to carry out high-altitude solution line work,
Increase workload and security risk.
Summary of the invention
The present invention in order to overcome at least one of the drawbacks of the prior art described above, provides a kind of circuit-breaker switching on-off test side
Method can accurately measure circuit-breaker switching on-off, and easy to operate, reduce the risk of operation, improve the peace of operation
Quan Xing.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of circuit-breaker switching on-off test method, packet
Include following steps:
S101: apply high-frequency signal injection in disconnect switch side；
S102: acquisition sensor current signal；
S103: disconnect switch opening and closing state and test branch wire time are judged according to faradic state.
Further, in step s101, the method for applying high-frequency signal injection is to apply high frequency in disconnect switch side
Alternating current.
Further, in step s 102, with high frequency induction current nesting in disconnect switch side, high frequency induction current pincers
Acquisition sensor current signal simultaneously amplifies rectification processing to sensor current signal.
Further, the sensor current signal of high frequency induction current pincers acquisition different frequency, believes induced current
Number carry out the processing of frequency-selecting phase demodulation, filter out the signal of corresponding phase.
Further, the sensor current signal is acquired by switch testing host, on the switch testing host
Equipped with wireless RF receivers, the high frequency induction current pincers emit the radio frequency signal of fixed frequency and by less radio-frequency
Receiver receives.
Further, anti-interference process is carried out to radio frequency signal using mixing Anti-Jamming Technique.
Further, the mixing Anti-Jamming Technique is the radiofrequency signal in addition to every phase, separately adds the fundamental wave of a high frequency
Signal, by high-frequency noise control can fixed frequency signal, select corresponding useful signal finally by frequency-selecting technology.
Further, the switch testing host carries out frequency-selecting phase demodulation to the radio frequency signal received and amplifies whole
Stream process restores disconnect switch switching on and off signal.
Compared with prior art, beneficial effect is: this method can precisely measure the time of circuit-breaker switching on-off,
And it is easy to operate, the risk of operation is reduced, the safety of operation is improved, avoids artificial high altitude operation installation test lead, section
The dart time, while ensure that the personal safety of operating personnel, accomplish to contact with high-pressure system real 0, be worth in the whole industry
It promotes the use of.
Detailed description of the invention
Fig. 1 is flow diagram of the present invention；
Fig. 2 is testing principle block diagram of the present invention；
Fig. 3 is the model framework chart of through-flow body in the present invention.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of positional relationship is described in attached drawing
Illustrate, should not be understood as the limitation to this patent.
Embodiment 1:
As shown in Figure 1, a kind of circuit-breaker switching on-off test method, comprising the following steps:
S101: apply high-frequency signal injection in disconnect switch side；
S102: acquisition sensor current signal；
S103: disconnect switch opening and closing state and test branch wire time are judged according to faradic state.
Wherein, as shown in Fig. 2, in the present embodiment, the method for applying high-frequency signal injection is in the side of disconnect switch
Apply high-frequency ac current, and sensor current signal is acquired in disconnect switch side with high frequency induction current nesting, breaks
Way switch two sides earth, according to electromagnetic induction principle, as shown in figure 3, the earth, open circuit are opened in the state that disconnect switch closes a floodgate
It closes and cable constitutes through-flow body, through-flow body applies excitation through high-frequency ac current and generates sensor current signal, generated induction
Current signal is clamped by high frequency induction current to be incuded, and is handled the sensor current signal.Sensor current signal passes through switch
Host collecting test is tested, wireless RF receivers, the fixed frequency of high frequency induction current pincers transmitting are equipped on switch testing host
The radio frequency signal of rate is simultaneously received by wireless RF receivers.Switch testing host is after receiving radio frequency signal to letter
Number processing recovery is carried out, tests out opening and closing state and the division slag time of disconnect switch.
Wherein, since there may be the not same periods between three-phase fracture, therefore high frequency induction current can shunt back in alternate formation
Road will cause interphase interference, influence test result, therefore high frequency induction current pincers amplify at rectification sensor current signal
Reason carries out the processing of frequency-selecting phase demodulation to sensor current signal, filters out when the sensor current signal for collecting different frequency
The signal of corresponding phase, when the sensor current signal of high frequency induction current pincers is after frequency-selecting, rectification processing, control radiofrequency signal is sent out
It penetrates the radio frequency signal of fixed frequency and is received by the wireless RF receivers on switch testing host.
After wireless RF receivers are to radio frequency signal, frequency-selecting phase demodulation is carried out to radio frequency signal and amplification rectifies
Disconnect switch switching on and off signal is restored in processing.If disconnect switch under gate-dividing state, does not generate sensor current signal, therefore
Radio frequency signal will not be received on switch testing host, when disconnect switch is in "on" position, switch testing master
Radio frequency signal can be received on machine, and disconnect switch can be accurately measured according to the time for receiving radio frequency signal
Branch wire time.This method is having multiple grounding switchs using multistage amplification, multistage frequency-selecting phase demodulation, out-phase frequency-selecting mistake frequency technology
In the case where also can measure, through-flow body can also sampling and measuring in 10 Europe resistance value below.It is initiated on signal processing and uses radio frequency
Radio Transmission Technology avoids artificial high altitude operation installation test lead, saving time, while ensure that the person of operating personnel
Safety, accomplishes to contact with high-pressure system real 0, is worth promoting the use of in the whole industry.
Embodiment 2:
The present embodiment is similar to Example 1, the difference is that, in the present embodiment, in order to avoid rf wireless signal is done
Influence test result is disturbed, anti-interference process is carried out to radio frequency signal using mixing Anti-Jamming Technique, in addition to the radio frequency of every phase
Signal, separately plus a high frequency fundamental signal, by high-frequency noise control can fixed frequency signal, selected finally by frequency-selecting technology
Corresponding useful signal.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (8)
1. a kind of circuit-breaker switching on-off test method, which comprises the following steps:
S101: apply high-frequency signal injection in disconnect switch side；
S102: acquisition sensor current signal；
S103: disconnect switch opening and closing state and test branch wire time are judged according to faradic state.
2. a kind of circuit-breaker switching on-off test method according to claim 1, which is characterized in that in step s101, apply
The method for adding high-frequency signal injection is to apply high-frequency ac current in disconnect switch side.
3. a kind of circuit-breaker switching on-off test method according to claim 1, which is characterized in that in step s 102, use
High frequency induction current nesting is in disconnect switch side, high frequency induction current pincers acquisition sensor current signal and to sensor current signal
Amplify rectification processing.
4. a kind of circuit-breaker switching on-off test method according to claim 3, which is characterized in that the high-frequency induction electricity
The sensor current signal of stream pincers acquisition different frequency, carries out the processing of frequency-selecting phase demodulation to sensor current signal, filters out corresponding phase
Signal.
5. a kind of circuit-breaker switching on-off test method according to claim 4, which is characterized in that the induced current letter
It number is acquired by switch testing host, the switch testing host is equipped with wireless RF receivers, the high-frequency induction
The radio frequency signal of current clamp transmitting fixed frequency is simultaneously received by wireless RF receivers.
6. a kind of circuit-breaker switching on-off test method according to claim 5, which is characterized in that using the anti-interference skill of mixing
Art carries out anti-interference process to radio frequency signal.
7. a kind of circuit-breaker switching on-off test method according to claim 6, which is characterized in that the mixing is anti-interference
Technology be in addition to every phase radiofrequency signal, separately plus a high frequency fundamental signal, by high-frequency noise control can fixed frequency signal,
Corresponding useful signal is selected finally by frequency-selecting technology.
8. according to a kind of any circuit-breaker switching on-off test method of claim 5-7, which is characterized in that the switch
Test host carries out frequency-selecting phase demodulation and amplification rectification processing to the radio frequency signal received, restores disconnect switch switching on and off
Signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407466.8A CN109298329A (en) | 2018-11-23 | 2018-11-23 | A kind of circuit-breaker switching on-off test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407466.8A CN109298329A (en) | 2018-11-23 | 2018-11-23 | A kind of circuit-breaker switching on-off test method |
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| CN109298329A true CN109298329A (en) | 2019-02-01 |
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| CN201811407466.8A Pending CN109298329A (en) | 2018-11-23 | 2018-11-23 | A kind of circuit-breaker switching on-off test method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932646A (en) * | 2019-03-15 | 2019-06-25 | 西门子电力自动化有限公司 | The online test method of leading time, device and system in simultaneous interconnecting |
| CN110261763A (en) * | 2019-06-03 | 2019-09-20 | 杭州国洲电力科技有限公司 | A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time |
| CN114280475A (en) * | 2021-12-29 | 2022-04-05 | 广东电网有限责任公司 | Tester for testing characteristics of circuit breaker |
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| CN1276061A (en) * | 1997-08-14 | 2000-12-06 | 亨德里机械工厂 | Electric arc monitoring systems |
| US20040189319A1 (en) * | 2003-03-31 | 2004-09-30 | Zoran Stanisic | Methods and apparatus for analyzing high voltage circuit breakers |
| CN101573847A (en) * | 2006-10-31 | 2009-11-04 | 西门子能量及自动化公司 | Systems and methods for arc fault detection |
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| CN103823179A (en) * | 2014-01-15 | 2014-05-28 | 云南电力试验研究院（集团）有限公司电力研究院 | Non-contact spatial high-frequency high-voltage circuit breaker operation characteristics measurement method |
| CN104101832A (en) * | 2014-06-18 | 2014-10-15 | 国家电网公司 | High voltage circuit breaker movement characteristic test method |
| CN106597275A (en) * | 2017-03-02 | 2017-04-26 | 福建瑞能博尔电力设备有限公司 | High-voltage switch motion characteristic test method and tester |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1276061A (en) * | 1997-08-14 | 2000-12-06 | 亨德里机械工厂 | Electric arc monitoring systems |
| US20040189319A1 (en) * | 2003-03-31 | 2004-09-30 | Zoran Stanisic | Methods and apparatus for analyzing high voltage circuit breakers |
| CN101573847A (en) * | 2006-10-31 | 2009-11-04 | 西门子能量及自动化公司 | Systems and methods for arc fault detection |
| CN102288907A (en) * | 2011-07-06 | 2011-12-21 | 内蒙古东部电力有限公司赤峰电业局 | Comprehensive condition testing method of circuit breaker |
| CN102590739A (en) * | 2012-02-18 | 2012-07-18 | 山西省电力公司晋城供电分公司 | On-line detecting device and detecting method for switch-on and switch-off period of power switch cabinet circuit breaker |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932646A (en) * | 2019-03-15 | 2019-06-25 | 西门子电力自动化有限公司 | The online test method of leading time, device and system in simultaneous interconnecting |
| CN109932646B (en) * | 2019-03-15 | 2022-01-28 | 西门子电力自动化有限公司 | Online detection method, device and system for lead time in synchronization grid connection |
| CN110261763A (en) * | 2019-06-03 | 2019-09-20 | 杭州国洲电力科技有限公司 | A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time |
| CN114280475A (en) * | 2021-12-29 | 2022-04-05 | 广东电网有限责任公司 | Tester for testing characteristics of circuit breaker |
| CN114280475B (en) * | 2021-12-29 | 2024-01-23 | 广东电网有限责任公司 | Tester for testing breaker characteristics |
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Application publication date: 20190201 |