CN106885983A - Breaker mechanic property on-Line Monitor Device - Google Patents

Breaker mechanic property on-Line Monitor Device Download PDF

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Publication number
CN106885983A
CN106885983A CN201510933435.6A CN201510933435A CN106885983A CN 106885983 A CN106885983 A CN 106885983A CN 201510933435 A CN201510933435 A CN 201510933435A CN 106885983 A CN106885983 A CN 106885983A
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CN
China
Prior art keywords
circuit
breaker
phase
current sensor
displacement transducer
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Granted
Application number
CN201510933435.6A
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Chinese (zh)
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CN106885983B (en
Inventor
成月
戚启忠
张金波
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Jiangsu Spring Power Polytron Technologies Inc
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Jiangsu Spring Power Polytron Technologies Inc
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Priority to CN201510933435.6A priority Critical patent/CN106885983B/en
Publication of CN106885983A publication Critical patent/CN106885983A/en
Application granted granted Critical
Publication of CN106885983B publication Critical patent/CN106885983B/en
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Classifications

    • 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The present invention relates to a kind of breaker mechanic property on-Line Monitor Device, including A phase gratings displacement transducer, B phase gratings displacement transducer, C phase gratings displacement transducer, A phase punchings current sensor, B phase punchings current sensor, C phase punchings current sensor, watchdog circuit, microcontroller circuit, display circuit, key circuit, clock circuit, power circuit, communication interface circuit, ON-OFF control circuit, on-off circuit, 3VDC voltage sources, breaker mechanical performance detection loop;Voltage drive method measuring principle is built using additional measuring loop, and with reference to on-off circuit, displacement transducer, centre path current sensor obtain breaker just divide, firm chalaza, total kilometres comprehensive descision breaker mechanic property, the device can greatly improve the reliability of feeding distribution system, breaker safe operation is ensured, can be pinpointed the problems in time, improve overhaul efficiency, waste to reducing human and material resources, has very important significance.

Description

Breaker mechanic property on-Line Monitor Device
Technical field
Utilize voltage drive method to judge that breaker has just divided and firm chalaza the present invention relates to one kind, and combine displacement transducer realization open circuit The mechanical property on-Line Monitor Device of device, to ensureing that breaker safe operation has very important significance.
Background technology
Switchgear plays a part of to close and cut-off electric power as the visual plant in power distribution network, for realizing conveying, switches Electric load and faulty equipment and line segment are exited from power system, so as to ensure power distribution network safe operation.Breaker is opened Away from being to examine two important indicators of breaker mechanical performance with the excess of stroke, contact of breaker machine can indirectly be judged by excess of stroke size Tool abrasion condition, thus had to when breaker dispatches from the factory measurement breaker open away from excess of stroke index.Breaker off-line type mechanical property In open away from the monitoring with the excess of stroke, be typically with voltage drive method, i.e., measure breaker mechanic property when in breaker loop Plus a small voltage signal, the separating brake point and combined floodgate point that can determine whether breaker are whether there is by the electric current for measuring breaker loop, i.e., just Divide and firm chalaza, but in breaker running, because high-tension presence cannot add excitation small voltage signal, so On-line monitoring to breaker mechanic property brings difficulty, is that this present invention proposes a kind of breaker mechanic property on-line monitoring dress Put and its monitoring method, build voltage drive method measuring principle using additional measuring loop, and combine on-off circuit, displacement sensing Device, centre path current sensor acquisition breaker just divide, firm chalaza, total kilometres comprehensive descision breaker mechanic property, the device The reliability of feeding distribution system can be greatly improved, breaker safe operation is ensured, can be pinpointed the problems in time, improve maintenance Efficiency, the waste to reducing human and material resources, has very important significance.
The content of the invention
The technical problems to be solved by the invention are how to build voltage drive method measuring principle using additional measuring loop, and tie Combination switch circuit, displacement transducer, centre path current sensor acquisition breaker just divide, firm chalaza, and total kilometres comprehensive descision breaks Road device mechanical property, to ensure the healthy and safe operation of breaker.
In order to solve the above technical problems, the present invention provides a kind of breaker mechanic property on-Line Monitor Device, including A phase gratings position Displacement sensor, B phase gratings displacement transducer, C phase gratings displacement transducer, A phase punchings current sensor, B phase punching electric currents Sensor, C phase punchings current sensor, watchdog circuit, microcontroller circuit, display circuit, key circuit, clock electricity Road, power circuit, communication interface circuit, ON-OFF control circuit, on-off circuit, 3VDC voltage sources, the inspection of breaker mechanical performance Survey time road;A phase gratings displacement transducer, B phase gratings displacement transducer, C phase gratings displacement transducer, A phase punchings electric current are passed Sensor, B phase punchings current sensor, the output end of C phase punching current sensors are connected with the A/D ends of microcontroller circuit respectively; I/O mouthfuls respectively with microcontroller circuit of watchdog circuit, key circuit, the output end of clock circuit is connected;Display circuit Input is connected with I/O mouthfuls of microcontroller circuit;The output end of power circuit is connected with the power end of microcontroller circuit;It is logical Believe that the input/output terminal of interface circuit is connected with the COM1 of microcontroller circuit;The input and microprocessor of ON-OFF control circuit I/O mouthfuls of connection of device circuit;The output end of ON-OFF control circuit is connected with the coil-end of on-off circuit;The output of 3VDC voltage sources End is together with two docking points and breaker mechanical performance detection circuit in series of on-off circuit.
A phase gratings displacement transducer, B phase gratings displacement transducer, C phase gratings displacement transducer slide handle and are arranged on breaker At bottom end pulling bar, grating fixes breaker on base, realizes non-cpntact measurement circuit-breaker switching on-off displacement-time curve, you can To obtain vacuum circuit breaker total kilometres H, actuation time t and average closing speed, average opening velocity.
Breaker mechanical performance detection loop includes vacuum circuit breaker, No. 1 contact of on-off circuit, on-off circuit No. 2 contacts, 3VDC Voltage source, punching current sensor;Vacuum circuit breaker, No. 1 contact of on-off circuit, No. 2 contacts of on-off circuit, 3VDC voltages Source, punching current sensor are cascaded to form loop, and utilization voltage advocate approach judges that vacuum circuit breaker has just divided and firm chalaza, First by No. 1 contact of on-off circuit, No. 2 junction closures of on-off circuit during measurement, then vacuum circuit breaker is closed or disconnected, according to In loop electric current have it is unchanged by judge vacuum circuit breaker just point and firm chalaza, so as to obtain the opening away from h and the excess of stroke of breaker L, and open away from h+ excess of stroke L=total kilometres H, if the excess of stroke increases explanation contact of breaker and abrasion occurs, the standard excess of stroke is 3-5mm.
Display circuit shows that display content mainly has the average separating brake speed of the phase average closing speed of breaker three, three-phase using liquid crystal display Degree, three-phase open away from, the three-phase excess of stroke, breaker actuation number of times, breaker open operation and combined floodgate displacement-time curve and envelope, if Breaker open operation and combined floodgate displacement-time curve envelope exceed the breaker open operation that is recorded when breaker just puts into operation and combined floodgate displacement- The soil 3% of time graph envelope, should just advise that breaker carries out power failure maintenance;If the phase average closing speed of breaker three and three-phase Average opening velocity is above standard value, i.e. the phase average closing speed standard value 0.4-0.8m/s of breaker three, the phase average of breaker three Opening velocity standard value 0.9-1.3m/s, if exceeding this scope suggestion breaker carries out power failure maintenance;Breaker actuation number of times adds up Value can react the breaker mechanical life-span, breaker vacuum bulb action frequency rated value 10000 times.
On-off circuit is that 5VDC work carries 2 pairs of normally opened and normally closed contact electromagnetic relays.
Power circuit is powered using alternating current-direct current 90-260V.
A phase punchings current sensor, B phase punchings current sensor, C phase punching current sensors are punching Hall current mutual inductance Device.
The positive effect of the present invention is:(1) by building external circuit, using voltage drive method judge vacuum circuit breaker just point and Firm chalaza, so as to realize the excess of stroke and open away from measurement;(2) sentenced according to breaker open operation and combined floodgate displacement-time curve envelope mark Disconnected breaker mechanical structure whether there is problem;(3) the breaker mechanical life-span is judged according to breaker actuation number of times aggregate-value;(4) Problem whether there is according to the phase average closing speed of breaker three and the average separating brake velocity estimated breaker mechanical structure of three-phase.
Brief description of the drawings
Fig. 1 is breaker mechanic property on-Line Monitor Device principle assumption diagram.
Fig. 2 is that breaker mechanical performance detection loop constitutes schematic diagram.
Specific embodiment
As shown in Figure 1, a kind of breaker mechanic property on-Line Monitor Device, including A phase gratings displacement transducer, B phase light Displacement transducer, C phase gratings displacement transducer, A phase punchings current sensor, B phase punchings current sensor, C phase punchings It is current sensor, watchdog circuit, microcontroller circuit, display circuit, key circuit, clock circuit, power circuit, logical Letter interface circuit, ON-OFF control circuit, on-off circuit, 3VDC voltage sources, breaker mechanical performance detection loop;A phase gratings Displacement transducer, B phase gratings displacement transducer, C phase gratings displacement transducer, A phase punchings current sensor, B phases punching electricity Flow sensor, the output end of C phase punching current sensors are connected with the A/D ends of microcontroller circuit respectively;Watchdog circuit, I/O mouthfuls respectively with microcontroller circuit of key circuit, the output end of clock circuit is connected;The input and Wei Chu of display circuit I/O mouthfuls of connection of reason device circuit;The output end of power circuit is connected with the power end of microcontroller circuit;Communication interface circuit Input/output terminal is connected with the COM1 of microcontroller circuit;The input of ON-OFF control circuit and the I/O of microcontroller circuit Mouth connection;The output end of ON-OFF control circuit is connected with the coil-end of on-off circuit;The output end and on-off circuit of 3VDC voltage sources Two docking points and breaker mechanical performance detection circuit in series together.
A phase gratings displacement transducer, B phase gratings displacement transducer, C phase gratings displacement transducer slide handle and are arranged under breaker At the pull bar of end, grating fixes breaker on base, realizes non-cpntact measurement circuit-breaker switching on-off displacement-time curve, you can with Obtain vacuum circuit breaker total kilometres H, actuation time t and average closing speed, average opening velocity.
As shown in Figure 2, breaker mechanical performance detection loop includes vacuum circuit breaker, No. 1 contact of on-off circuit, switch electricity The contact of road 2,3VDC voltage sources, punching current sensor;Vacuum circuit breaker, No. 1 contact of on-off circuit, on-off circuit 2 Number contact, 3VDC voltage sources, punching current sensor are cascaded to form loop, and utilization voltage advocate approach judges that vacuum is broken Road device just point and firm chalaza, first by No. 1 contact of on-off circuit, No. 2 junction closures of on-off circuit during measurement, then by vacuum circuit breaker Device close or disconnect, according to electric current in loop have it is unchanged can judge vacuum circuit breaker just divide with firm chalaza, so as to obtain disconnected Road device is opened away from h and excess of stroke L, and is opened away from h+ excess of stroke L=total kilometres H, if the excess of stroke increases explanation, abrasion occurs in contact of breaker, The standard excess of stroke is 3-5mm.
Display circuit shows that display content mainly has the average separating brake speed of the phase average closing speed of breaker three, three-phase using liquid crystal display Degree, three-phase open away from, the three-phase excess of stroke, breaker actuation number of times, breaker open operation and combined floodgate displacement-time curve and envelope, if Breaker open operation and combined floodgate displacement-time curve envelope exceed the breaker open operation that is recorded when breaker just puts into operation and combined floodgate displacement- The soil 3% of time graph envelope, should just advise that breaker carries out power failure maintenance;If the phase average closing speed of breaker three and three-phase Average opening velocity is above standard value, i.e. the phase average closing speed standard value 0.4-0.8m/s of breaker three, the phase average of breaker three Opening velocity standard value 0.9-1.3m/s, if exceeding this scope suggestion breaker carries out power failure maintenance;Breaker actuation number of times adds up Value can react the breaker mechanical life-span, breaker vacuum bulb action frequency rated value 10000 times.
On-off circuit is that 5VDC work carries 2 pairs of normally opened and normally closed contact electromagnetic relays.
Power circuit is powered using alternating current-direct current 90-260V.
A phase punchings current sensor, B phase punchings current sensor, C phase punching current sensors are punching Hall current mutual inductance Device.
The above is only the preferred embodiment of type of the present invention, and the protection domain of type of the present invention is not limited merely to above-described embodiment, All technical schemes belonged under type thinking of the present invention belong to the protection domain of type of the present invention.It should be pointed out that for the art Those of ordinary skill for, some improvements and modifications under the premise of type principle of the present invention is not departed from, these improvements and modifications Should be regarded as the protection domain of type of the present invention.

Claims (7)

1. breaker mechanic property on-Line Monitor Device and its monitoring method, it is characterized in that:Including A phase gratings displacement transducer, B phase gratings displacement transducer, C phase gratings displacement transducer, A phase punchings current sensor, B phase punchings current sensor, C Phase punching current sensor, watchdog circuit, microcontroller circuit, display circuit, key circuit, clock circuit, power supply electricity Road, communication interface circuit, ON-OFF control circuit, on-off circuit, 3VDC voltage sources, breaker mechanical performance detection loop;A Phase grating displacement transducer, B phase gratings displacement transducer, C phase gratings displacement transducer, A phase punchings current sensor, B phases Punching current sensor, the output end of C phase punching current sensors are connected with the A/D ends of microcontroller circuit respectively;House dog I/O mouthfuls respectively with microcontroller circuit of circuit, key circuit, the output end of clock circuit is connected;The input of display circuit I/O mouthfuls with microcontroller circuit is connected;The output end of power circuit is connected with the power end of microcontroller circuit;Communication interface The input/output terminal of circuit is connected with the COM1 of microcontroller circuit;The input and microcontroller circuit of ON-OFF control circuit I/O mouthfuls connection;The output end of ON-OFF control circuit is connected with the coil-end of on-off circuit;The output end of 3VDC voltage sources with open Two docking points and breaker mechanical performance detection circuit in series on powered-down road are together.
2. breaker mechanic property on-Line Monitor Device according to claim 1 and its monitoring method, it is characterized in that:A phases Grating displacement sensor, B phase gratings displacement transducer, C phase gratings displacement transducer slide handle and are arranged at breaker bottom end pulling bar, Grating fixes breaker on base, realizes non-cpntact measurement circuit-breaker switching on-off displacement-time curve, you can broken with obtaining vacuum Road device total kilometres H, actuation time t and average closing speed, average opening velocity.
3. the breaker mechanic property on-Line Monitor Device and its monitoring method according to claim 1 and claim 2, its It is characterized in:Breaker mechanical performance detection loop include vacuum circuit breaker, No. 1 contact of on-off circuit, No. 2 contacts of on-off circuit, 3VDC voltage sources, punching current sensor;Vacuum circuit breaker, No. 1 contact of on-off circuit, on-off circuit No. 2 contacts, 3VDC Voltage source, punching current sensor are cascaded to form loop, and utilization voltage advocate approach judges that vacuum circuit breaker has just divided and firm Chalaza, vacuum circuit breaker first by No. 1 contact of on-off circuit, No. 2 junction closures of on-off circuit during measurement, then closed or disconnected, According to electric current in loop have it is unchanged by judge vacuum circuit breaker just point and firm chalaza so that obtain breaker open away from h and Excess of stroke L, and open away from h+ excess of stroke L=total kilometres H, if the excess of stroke increases explanation contact of breaker and abrasion occurs, the standard excess of stroke is 3-5mm.
4. breaker mechanic property on-Line Monitor Device according to claim 1 and its monitoring method, it is characterized in that:Display Circuit shows that display content mainly has the phase average closing speed of breaker three, the average opening velocity of three-phase, three-phase using liquid crystal display Open away from, the three-phase excess of stroke, breaker actuation number of times, breaker open operation and combined floodgate displacement-time curve and envelope, if breaker point Lock and combined floodgate displacement-time curve envelope exceed the breaker open operation and combined floodgate displacement-time curve recorded when breaker just puts into operation The soil 3% of envelope, should just advise that breaker carries out power failure maintenance;If the phase average closing speed of breaker three and the average separating brake of three-phase Speed is above standard value, i.e. the phase average closing speed standard value 0.4-0.8m/s of breaker three, the average opening velocity of breaker three-phase Standard value 0.9-1.3m/s, if exceeding this scope suggestion breaker carries out power failure maintenance;Breaker actuation number of times aggregate-value can be anti- Answer the breaker mechanical life-span, breaker vacuum bulb action frequency rated value 10000 times.
5. breaker mechanic property on-Line Monitor Device according to claim 1 and its monitoring method, it is characterized in that:Switch Circuit is that 5VDC work carries 2 pairs of normally opened and normally closed contact electromagnetic relays.
6. breaker mechanic property on-Line Monitor Device according to claim 1 and its monitoring method, it is characterized in that:Power supply Circuit is powered using alternating current-direct current 90-260V.
7. breaker mechanic property on-Line Monitor Device according to claim 1 and its monitoring method, it is characterized in that:A phases Punching current sensor, B phase punchings current sensor, C phase punching current sensors are punching Hall current transformer.
CN201510933435.6A 2015-12-15 2015-12-15 On-line monitoring device for mechanical characteristics of circuit breaker Active CN106885983B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107478985A (en) * 2017-08-21 2017-12-15 河海大学常州校区 On-load tap changers of transformers state on_line monitoring device and its monitoring method
CN107656197A (en) * 2017-08-23 2018-02-02 中国电子科技集团公司第四十研究所 The implementation method of switching times is switched in a kind of programming count switching network
CN107861058A (en) * 2017-11-07 2018-03-30 山东泰开高压开关有限公司 A kind of measurement apparatus and measuring method of vacuum circuit breaker divide-shut brake speed
CN107870299A (en) * 2017-10-12 2018-04-03 温州大学 The detection means and its detection method of breaker of plastic casing tripping mechanism
CN108646175A (en) * 2018-04-17 2018-10-12 国网湖南省电力有限公司 High Voltage Circuit Breaker Contacts overtravel dynamic on-line measuring device and its application process
CN109884522A (en) * 2019-03-29 2019-06-14 云南电网有限责任公司电力科学研究院 Just divide the device and method just closed based on contactless live detection breaker

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CN203502555U (en) * 2013-09-11 2014-03-26 广西电网公司电力科学研究院 Electrical characteristic detecting device for multifunctional high-voltage circuit breaker
CN203732254U (en) * 2014-01-10 2014-07-23 常州太平洋电力设备(集团)有限公司 Circuit breaker mechanical characteristic online monitoring device
CN205263269U (en) * 2015-12-15 2016-05-25 江苏德春电力科技有限公司 Circuit breaker mechanical characteristic online monitoring device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003073577A1 (en) * 2002-02-28 2003-09-04 Siemens Aktiengesellschaft Testing arrangement for a power circuit breaker provided with an electronic trip element
CN201145735Y (en) * 2007-12-31 2008-11-05 比亚迪股份有限公司 Device for testing electric leakage circuit breaker
CN201477189U (en) * 2009-04-23 2010-05-19 南京因泰莱配电自动化设备有限公司 Device for online detecting mechanical characteristics of 24 kV high-voltage vacuum circuit breaker
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107478985A (en) * 2017-08-21 2017-12-15 河海大学常州校区 On-load tap changers of transformers state on_line monitoring device and its monitoring method
CN107656197A (en) * 2017-08-23 2018-02-02 中国电子科技集团公司第四十研究所 The implementation method of switching times is switched in a kind of programming count switching network
CN107870299A (en) * 2017-10-12 2018-04-03 温州大学 The detection means and its detection method of breaker of plastic casing tripping mechanism
CN107870299B (en) * 2017-10-12 2020-03-31 温州大学 Detection device and detection method for tripping mechanism of molded case circuit breaker
CN107861058A (en) * 2017-11-07 2018-03-30 山东泰开高压开关有限公司 A kind of measurement apparatus and measuring method of vacuum circuit breaker divide-shut brake speed
CN108646175A (en) * 2018-04-17 2018-10-12 国网湖南省电力有限公司 High Voltage Circuit Breaker Contacts overtravel dynamic on-line measuring device and its application process
CN109884522A (en) * 2019-03-29 2019-06-14 云南电网有限责任公司电力科学研究院 Just divide the device and method just closed based on contactless live detection breaker

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