CN102636745B - Real-time online monitoring device for electrical life of circuit breaker and monitoring method - Google Patents
Real-time online monitoring device for electrical life of circuit breaker and monitoring method Download PDFInfo
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- CN102636745B CN102636745B CN201210104643.1A CN201210104643A CN102636745B CN 102636745 B CN102636745 B CN 102636745B CN 201210104643 A CN201210104643 A CN 201210104643A CN 102636745 B CN102636745 B CN 102636745B
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- circuit breaker
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Abstract
The invention discloses an online monitoring system for a circuit breaker in a power system, particularly a real-time online monitoring device for the electrical life of a circuit breaker. The device comprises a signal processing unit, an acquisition unit in signal connection with a secondary loop of a contact of the circuit breaker and a comprehensive control unit electrically connected with an auxiliary contact of the circuit breaker, wherein the acquisition unit is electrically connected with the signal processing unit; and the signal processing unit is electrically connected with the comprehensive control unit. In the invention, the functions of online monitoring and alarming for the electrical life of the circuit breaker are realized by online monitoring of the breaking current value of the contact of the circuit breaker in real time, the stability is good, the monitoring accuracy is high, the application range is wide, and the working efficiency is improved.
Description
Technical field
The present invention relates to the on-line monitoring system of isolating switch in electric system, especially a kind of circuit breaker electrical endurance real time on-line monitoring device and monitoring method.
Background technology
Along with the development of modern society is more and more higher to the requirement of electric system, the reliability of undertaking the primary cut-out of control, protection dual-use function in electric system seems most important.In order to ensure the operational reliability of primary cut-out, cut the waste, improve the available rate of equipment, the maintenance of power equipment at present by prophylactic repair to repair based on condition of component future development.
The electric life of isolating switch is an important content of repair based on condition of component, and the accumulative total size of current of contact of breaker is the key factor that determines its electric life.In the situation that cannot determining the actual dropout current size of isolating switch, isolating switch is blindly disintegrated, not only can cause huge manpower, financial resources waste and unnecessary power failure, and can make intact isolating switch originally break down because of maintenance, the accumulative total size of current that therefore provides a kind of circuit breaker electrical endurance real time on-line monitoring device to carry out monitoring breaker contact is very necessary.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency in prior art, a kind of circuit breaker electrical endurance real time on-line monitoring device and monitoring method are provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of circuit breaker electrical endurance real time on-line monitoring device, the collecting unit that comprises signal processing unit, be connected with contact of breaker secondary circuit signal and the Comprehensive Control unit being electrically connected with auxiliary contact of breaker, collecting unit is electrically connected with signal processing unit, and signal processing unit is electrically connected with Comprehensive Control unit.
Described collecting unit has three current sensors.
Described signal processing unit has four low power operational amplifiers.
Described Comprehensive Control unit has micro controller unit, warning indicating member and communication unit.
Described communication unit has 232TTL level communication and communicates by letter with RS485.
The monitoring method of above-mentioned circuit breaker electrical endurance real time on-line monitoring device is:
(1), the three-phase secondary circuit of contact of breaker is penetrated successively to current sensor corresponding in collecting unit;
(2), current sensor is transferred to signal processing unit after the current signal of the secondary circuit collecting is converted to voltage signal;
(3) four low power operational amplifiers, in signal processing unit by the signal receiving amplify, level conversion, filtering processing, then pass the signal to Comprehensive Control unit;
(4), when contact of breaker disjunction, auxiliary contact of breaker moves simultaneously, electric current when microcontroller in Comprehensive Control unit judges contact of breaker disjunction, then after the AD sampling of microcontroller, data processing, communication unit transfers data on composite monitoring device again, is convenient to staff and checks and operate
The invention has the beneficial effects as follows: the current value of the present invention during by the disjunction of real time on-line monitoring contact of breaker realized on-line monitoring and the warning function to circuit breaker electrical endurance, stability is good, the precision of monitoring is high, applied widely, has improved work efficiency.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is framework process flow diagram of the present invention.
Embodiment
The present invention is further illustrated with preferred embodiment by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present invention is only described in a schematic way, and therefore it only shows the formation relevant with the present invention.
A kind of circuit breaker electrical endurance real time on-line monitoring device as shown in Figure 1, the collecting unit that comprises signal processing unit, be connected with contact of breaker secondary circuit signal and the Comprehensive Control unit being electrically connected with auxiliary contact of breaker, collecting unit is electrically connected with signal processing unit, and signal processing unit is electrically connected with Comprehensive Control unit.
Its collecting unit has three current sensors, and signal processing unit has four low power operational amplifiers, and Comprehensive Control unit has micro controller unit, warning indicating member and communication unit, and communication unit has 232TTL level communication and communicates by letter with RS485.
The monitoring method of above-mentioned circuit breaker electrical endurance real time on-line monitoring device is:
(1), the three-phase secondary circuit of contact of breaker is penetrated successively to current sensor corresponding in collecting unit;
(2), current sensor is transferred to signal processing unit after the current signal of the secondary circuit collecting is converted to voltage signal;
(3) four low power operational amplifiers, in signal processing unit by the signal receiving amplify, level conversion, filtering processing, then pass the signal to Comprehensive Control unit;
(4), when contact of breaker disjunction, auxiliary contact of breaker moves simultaneously, electric current when microcontroller in Comprehensive Control unit judges contact of breaker disjunction, then after the AD sampling of microcontroller, data processing, be transferred on the communication facilities relevant to isolating switch by the 232TTL level communication in communication unit, isolating switch communication facilities passes through RS485 communications again to integrated monitoring device of switch equipment again.
Staff can carry out by operating switch equipment complex monitoring device the electric current of real time on-line monitoring contact of breaker accumulative total, and in the time that electric current exceeds predefined safety value, integrated monitoring device of switch equipment will produce and report to the police according to the instruction of the warning indicating member in Comprehensive Control unit, and staff can and make corresponding judgement according to the electric life of the instruction inquiry isolating switch of reporting to the police.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (1)
1. the monitoring method of circuit breaker electrical endurance real time on-line monitoring device is:
(1), the three-phase secondary circuit of contact of breaker is penetrated successively to current sensor corresponding in collecting unit;
(2), current sensor is transferred to signal processing unit after the current signal of the secondary circuit collecting is converted to voltage signal;
(3) four low power operational amplifiers, in signal processing unit by the signal receiving amplify, level conversion, filtering processing, then pass the signal to Comprehensive Control unit;
(4), when contact of breaker disjunction, auxiliary contact of breaker moves simultaneously, electric current when microcontroller in Comprehensive Control unit judges contact of breaker disjunction, then after the AD sampling of microcontroller, data processing, communication unit transfers data on composite monitoring device again, is convenient to staff and checks and operate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210104643.1A CN102636745B (en) | 2012-04-10 | 2012-04-10 | Real-time online monitoring device for electrical life of circuit breaker and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210104643.1A CN102636745B (en) | 2012-04-10 | 2012-04-10 | Real-time online monitoring device for electrical life of circuit breaker and monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102636745A CN102636745A (en) | 2012-08-15 |
| CN102636745B true CN102636745B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210104643.1A Expired - Fee Related CN102636745B (en) | 2012-04-10 | 2012-04-10 | Real-time online monitoring device for electrical life of circuit breaker and monitoring method |
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| CN (1) | CN102636745B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297680B (en) * | 2014-10-29 | 2017-10-13 | 杭州凯达电力建设有限公司 | A kind of switch detection method and system |
| CN104793136B (en) * | 2015-05-07 | 2017-10-20 | 西安交通大学 | A kind of high pressure SF6Circuit breaker electrical endurance monitoring apparatus |
| CN109755925B (en) * | 2019-01-08 | 2021-06-25 | 李邦华 | Configurable breaker accurate state overhauling method based on existing fault storage data |
| CN112034335B (en) * | 2020-08-31 | 2023-05-12 | 蜂巢能源科技有限公司 | Method and device for estimating service life of contactor |
| CN113189481B (en) * | 2021-05-21 | 2022-09-02 | 南京慧众信息科技有限公司 | Electric power instrument with circuit breaker service life monitoring function and monitoring method |
| CN114035039B (en) * | 2021-11-29 | 2023-06-20 | 国网重庆市电力公司电力科学研究院 | Multidimensional analysis method for action state of circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328262A (en) * | 2001-04-13 | 2001-12-26 | 国家电力公司华中公司 | Electric service life monitor system for contact of breaker |
| CN102289567A (en) * | 2011-07-13 | 2011-12-21 | 常州森隆电力科技有限公司 | Intelligent self-diagnosis power switch system and self diagnosis method |
| CN102355051A (en) * | 2011-07-21 | 2012-02-15 | 常州森隆电力科技有限公司 | On-line monitoring system of breaker and on-line monitoring method thereof |
| CN202166722U (en) * | 2011-07-09 | 2012-03-14 | 上海市电力公司 | Online monitoring and fault diagnosing system of circuit breaker |
| CN202600110U (en) * | 2012-04-10 | 2012-12-12 | 常州森隆电力科技有限公司 | Device for real-time on-line monitoring of electric life of circuit breaker |
-
2012
- 2012-04-10 CN CN201210104643.1A patent/CN102636745B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328262A (en) * | 2001-04-13 | 2001-12-26 | 国家电力公司华中公司 | Electric service life monitor system for contact of breaker |
| CN202166722U (en) * | 2011-07-09 | 2012-03-14 | 上海市电力公司 | Online monitoring and fault diagnosing system of circuit breaker |
| CN102289567A (en) * | 2011-07-13 | 2011-12-21 | 常州森隆电力科技有限公司 | Intelligent self-diagnosis power switch system and self diagnosis method |
| CN102355051A (en) * | 2011-07-21 | 2012-02-15 | 常州森隆电力科技有限公司 | On-line monitoring system of breaker and on-line monitoring method thereof |
| CN202600110U (en) * | 2012-04-10 | 2012-12-12 | 常州森隆电力科技有限公司 | Device for real-time on-line monitoring of electric life of circuit breaker |
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| CN102636745A (en) | 2012-08-15 |
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