CN101109787B - Intelligent detecting device for under-voltage releasing equipment of breaker - Google Patents
Intelligent detecting device for under-voltage releasing equipment of breaker Download PDFInfo
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- CN101109787B CN101109787B CN2007100593897A CN200710059389A CN101109787B CN 101109787 B CN101109787 B CN 101109787B CN 2007100593897 A CN2007100593897 A CN 2007100593897A CN 200710059389 A CN200710059389 A CN 200710059389A CN 101109787 B CN101109787 B CN 101109787B
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Abstract
The invention relates to an intelligent detector for an undervoltage releaser of a circuit breaker, which comprises a voltage regulating, switch-over, triggering circuit and a computer. The voltage regulating circuit comprises a voltage regulating transformer and a measurement transformer, wherein, the each two taps of the secondary coil of the measurement transformer are arranged in one group, the voltage of each tap group is respectively 1 and 50% of the rated voltage of the undervoltage releaser; the switch-over circuit comprises contactors and two-way thyristors; each group of taps of the measurement transformer are connected with one end of the normal open or normal close contacts of a corresponding group of contactors, and another ends of the normal open or normal close contacts are first connected parallelly, then are connected with the two two-way thyristor; the output ends of the triggering circuit are respectively connected with the gate poles of the two two-way thyristors; the computer is connected with the input end of the optic coupling in the triggering circuit. With such switch-over way by contactor and two-way thyristor, not only the action time and recovery time of the undervoltage releaser can be detected accurately, but also the high switch-over frequency of the switch-over current greatly improves the speed for detecting the undervoltage releasing parameters of the circuit breaker, the labor cost is saved and the productivity is improved.
Description
Affiliated technical field
The invention belongs to the isolating switch detection and use test unit, particularly relate to a kind of intelligent detecting device for under-voltage releasing equipment of breaker.
Background technology
At present known isolating switch production for the band device for under-voltage releasing equipment is at work in order to solve the problem that detects device for under-voltage releasing equipment actuation time and release time, mostly be to adopt the mode of manual switching voltage to make the device for under-voltage releasing equipment action, so just can not accurately measure, can only depend merely on directly perceived going up and judge that whether device for under-voltage releasing equipment moves whether qualified detect device for under-voltage releasing equipment the actuation time and the release time of device for under-voltage releasing equipment.And such detection mode has been difficult to adapt in the production now for the accuracy requirement of being with the examination of device for under-voltage releasing equipment isolating switch performance.
Summary of the invention
The present invention provides a kind of intelligent detecting device for under-voltage releasing equipment of breaker that can accurately measure device for under-voltage releasing equipment actuation time and release time for solving the technical matters that exists in the known technology.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology is:
A kind of intelligent detecting device for under-voltage releasing equipment of breaker is characterized in that: it includes regulating circuit, commutation circuit, trigger circuit and computing machine; Described regulating circuit is made up of adjustable transformer and measuring transformer, the outgoing side of adjustable transformer is the input side of measuring transformer, wherein the tap of measuring transformer secondary coil is respectively 110V, 190V, 220V, 380V, and the magnitude of voltage of every group of tap is respectively the rated voltage and 50% rated voltage of device for under-voltage releasing equipment; Described commutation circuit is made up of contactor and bidirectional thyristor, wherein 3 of first contactor groups of normally opened contact series connection, 2 groups of normally closed contact series connection; The 110V end of 3 groups of described measuring transformers of normally opened contact one termination that described first contactor is connected, 2 groups of normally closed contacts one that described first contactor is connected terminate at the 190V end of described measuring transformer, and 2 groups of normally closed contacts of the described series connection of described first contactor are connected the back and link to each other with an end of first bidirectional thyristor with the other end of 3 groups of normally opened contacts of series connection; Equally, the 220V end of 3 groups of described measuring transformers of normally opened contact one termination of second contactor series connection, one of 2 groups of normally closed contacts of described second contactor series connection terminate at the 380V end of described measuring transformer, and 2 groups of normally closed contacts of the described series connection of described second contactor are connected the back and link to each other with an end of second bidirectional thyristor with the other end of 3 groups of normally opened contacts of series connection; After an other end of described first, second bidirectional thyristor connects, link to each other with an end of isolating switch to be measured, the isolating switch other end to be measured links to each other with the 0V terminal of described measuring transformer; Two output terminals of described trigger circuit connect first, second bidirectional thyristor gate pole described in the commutation circuit respectively, and described trigger circuit are made up of step-down transformer, diode full-wave rectifying circuit, filtering circuit, mu balanced circuit and triode signal generating circuit; The input end of optocoupler in the triode signal generating circuit in the computing machine contact Power Generation Road; Computing machine is selected the output tap group of corresponding regulating circuit according to the concrete model of the device for under-voltage releasing equipment of tested isolating switch, control corresponding contactor and realize the group switching, after this other bidirectional thyristor break-make of computer control respective sets realizes rated voltage and under-voltage change detection, and record, the low-voltage time of judging device for under-voltage releasing equipment and the testing result of release time.
The present invention can also adopt following technical measures:
Described computing machine can be single-chip microcomputer, industrial control computer or PLC.
Advantage and good effect that the present invention has are: owing to adopt this contactor and bidirectional thyristor to carry out the switching mode of rated voltage and 50% rated voltage, not only can accurately detect the actuation time and the release time of device for under-voltage releasing equipment, and the higher switching frequency of commutation circuit has improved the detection speed of isolating switch undervoltage tripping parameter greatly, both saved labour cost, guarantee accuracy of detection, improved production efficiency again.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
For further understanding content of the present invention, characteristics and effect, exemplifies now and followingly detect the embodiment that rated voltage is 380 volts and 220 volts two kinds device for under-voltage releasing equipment of breaker actuation times and release time, and conjunction with figs. is described in detail as follows:
As shown in Figure 1, the utility model includes regulating circuit 1, commutation circuit 2 and trigger circuit 3.The secondary side of pressure regulator T1 is the primary side of measuring transformer T2, and the secondary side of measuring transformer T2 has 110 volts, 190 volts, 220 volts and 380 volts of four taps.Wherein 110 volts and 190 volts of taps connect the normally opened contact of contactor JQ10 and an end of normally closed contact respectively; 220 volts and 380 volts of taps connect the normally opened contact of contactor JQ11 and an end of normally closed contact respectively.The other end of JQ10 normally opened contact and normally closed contact also connects the back with the other end of the anode, JQ11 normally opened contact and the normally closed contact that meet bidirectional thyristor ZD1 and connect the back with connecing the negative electrode of bidirectional thyristor ZD2, the negative electrode of bidirectional thyristor ZD1 and bidirectional thyristor ZD2 also connect the test electrode end of back as detected isolating switch, and 0 volt of one end of measuring transformer T2 secondary side is as another test electrode end of detected isolating switch.The trigger pip output terminal of trigger circuit 3 connects the gate pole of ZD1 and ZD2 respectively, and the controlled signal input end 15PB5 of trigger circuit 3 and 16PB6 connect the control signal output ends of computing machine respectively.
The switching of contactor JQ10 and JQ11 can be undertaken by artificial or computer control.
Wherein computing machine can be single-chip microcomputer, industrial control computer or PLC.
Its course of work is: when beginning to detect with the device for under-voltage releasing equipment coil tandem of isolating switch between 0 volt of tap of output of the output terminal of commutation circuit 2 and regulating circuit 1, select the output tap group (as 380V and 190V) of corresponding regulating circuit 1 according to the concrete model of the device for under-voltage releasing equipment of isolating switch by artificial or computing machine, control corresponding contactor and realize the group switching, realize rated voltage and under-voltage change detection by other bidirectional thyristor break-make of computer control respective sets then; As when selecting 380V and 190V, JQ10, JQ11 are failure to actuate, and when ZD2 is logical, ZD1 is disconnected, the voltage of device for under-voltage releasing equipment is ratings, and device for under-voltage releasing equipment is failure to actuate; Keep JQ10, JQ11 to be failure to actuate, control ZD1 is logical, ZD2 is disconnected, the magnitude of voltage that is device for under-voltage releasing equipment is reduced to 50% rated voltage, utilize the actuation time of computer recording device for under-voltage releasing equipment simultaneously, device for under-voltage releasing equipment action timing stops, and the while is a ratings with the voltage switchback of device for under-voltage releasing equipment once more, be that ZD1 is logical, ZD2 is disconnected, and the release time of opening entry device for under-voltage releasing equipment, device for under-voltage releasing equipment recovers timing to be stopped, and finishes parameter measurement; Computing machine also further judges whether testing result adheres to specification.
Claims (2)
1. intelligent detecting device for under-voltage releasing equipment of breaker, it is characterized in that: it includes regulating circuit, commutation circuit, trigger circuit and computing machine; Described regulating circuit is made up of adjustable transformer and measuring transformer, the outgoing side of adjustable transformer is the input side of measuring transformer, wherein the tap of measuring transformer secondary coil is respectively 110V, 190V, 220V, 380V, and the magnitude of voltage of every group of tap is respectively the rated voltage and 50% rated voltage of device for under-voltage releasing equipment; Described commutation circuit is made up of contactor and bidirectional thyristor, wherein 3 of first contactor groups of normally opened contact series connection, 2 groups of normally closed contact series connection; The 110V end of 3 groups of described measuring transformers of normally opened contact one termination that described first contactor is connected, 2 groups of normally closed contacts one that described first contactor is connected terminate at the 190V end of described measuring transformer, and 2 groups of normally closed contacts of the described series connection of described first contactor are connected the back and link to each other with an end of first bidirectional thyristor with the other end of 3 groups of normally opened contacts of series connection; Equally, the 220V end of 3 groups of described measuring transformers of normally opened contact one termination of second contactor series connection, one of 2 groups of normally closed contacts of described second contactor series connection terminate at the 380V end of described measuring transformer, and 2 groups of normally closed contacts of the described series connection of described second contactor are connected the back and link to each other with an end of second bidirectional thyristor with the other end of 3 groups of normally opened contacts of series connection; After an other end of described first, second bidirectional thyristor connects, link to each other with an end of isolating switch to be measured, the isolating switch other end to be measured links to each other with the 0V terminal of described measuring transformer; Two output terminals of described trigger circuit connect first, second bidirectional thyristor gate pole described in the commutation circuit respectively, and described trigger circuit are made up of step-down transformer, diode full-wave rectifying circuit, filtering circuit, mu balanced circuit and triode signal generating circuit; The input end of optocoupler in the triode signal generating circuit in the computing machine contact Power Generation Road; Computing machine is selected the output tap group of corresponding regulating circuit according to the concrete model of the device for under-voltage releasing equipment of tested isolating switch, control corresponding contactor and realize the group switching, after this other bidirectional thyristor break-make of computer control respective sets realizes rated voltage and under-voltage change detection, and record, the low-voltage time of judging device for under-voltage releasing equipment and the testing result of release time.
2. intelligent detecting device for under-voltage releasing equipment of breaker according to claim 1 is characterized in that; Described computing machine can be single-chip microcomputer, industrial control computer or PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100593897A CN101109787B (en) | 2007-08-31 | 2007-08-31 | Intelligent detecting device for under-voltage releasing equipment of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100593897A CN101109787B (en) | 2007-08-31 | 2007-08-31 | Intelligent detecting device for under-voltage releasing equipment of breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101109787A CN101109787A (en) | 2008-01-23 |
| CN101109787B true CN101109787B (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100593897A Expired - Fee Related CN101109787B (en) | 2007-08-31 | 2007-08-31 | Intelligent detecting device for under-voltage releasing equipment of breaker |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841309B (en) * | 2011-06-21 | 2015-07-08 | 苏州安泰变压器有限公司 | Test device for circuit breaker |
| CN102944837A (en) * | 2012-11-25 | 2013-02-27 | 山东电力集团公司滨州供电公司 | Device for monitoring breaker state |
| CN103854711B (en) * | 2012-12-07 | 2016-06-29 | 中国核动力研究设计院 | A kind of method of analytical reactions heap shutdown breaker opening times performance |
| CN108152725B (en) * | 2017-12-14 | 2020-12-15 | 国网宁夏电力有限公司电力科学研究院 | Electrical switch tripping performance test device |
| DE102019214821B4 (en) * | 2019-09-27 | 2024-01-18 | Siemens Aktiengesellschaft | Circuit breaker and mobile device |
| CN113640657B (en) * | 2020-12-25 | 2023-06-23 | 施耐德万高（天津）电气设备有限公司 | Tripping detection circuit and method of CB-level automatic transfer switch |
| CN113359020B (en) * | 2021-06-18 | 2023-12-22 | 江阴市懿泓电气有限公司 | Automatic monitoring device for working parameters of circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172480Y (en) * | 1993-07-05 | 1994-07-20 | 马纪路 | Electronic circuit breaker regulating table |
| CN2586276Y (en) * | 2002-12-11 | 2003-11-12 | 邱长发 | Low-voltage protector of electronic a.c 220V switching gear |
| CN1490839A (en) * | 2002-10-16 | 2004-04-21 | 上海电器科学研究所 | Under voltage release of low voltage circuit breaker |
-
2007
- 2007-08-31 CN CN2007100593897A patent/CN101109787B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172480Y (en) * | 1993-07-05 | 1994-07-20 | 马纪路 | Electronic circuit breaker regulating table |
| CN1490839A (en) * | 2002-10-16 | 2004-04-21 | 上海电器科学研究所 | Under voltage release of low voltage circuit breaker |
| CN2586276Y (en) * | 2002-12-11 | 2003-11-12 | 邱长发 | Low-voltage protector of electronic a.c 220V switching gear |
Non-Patent Citations (2)
| Title |
|---|
| JP平5-188122A 1993.07.30 |
| JP平5-288815A 1993.11.05 |
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| CN101109787A (en) | 2008-01-23 |
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