CN203432994U - Phase sequence conversion device of three-phase alternating current tester - Google Patents
Phase sequence conversion device of three-phase alternating current tester Download PDFInfo
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- CN203432994U CN203432994U CN201320251028.3U CN201320251028U CN203432994U CN 203432994 U CN203432994 U CN 203432994U CN 201320251028 U CN201320251028 U CN 201320251028U CN 203432994 U CN203432994 U CN 203432994U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 19
- 230000001681 protective effect Effects 0.000 description 11
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Abstract
一种三相交流试验仪的相序转换装置，它包括一交流试验仪，所述交流试验仪的三相电压或电流输出连接于一带有不同档位辅助接点的切换开关，该切换开关的输出连接至继电保护装置；所述的三相交流试验仪输出固定为A-B-C相序，所述切换开关通过不同档位辅助接点的通断后，将A-B-C相序切换为至少包括C-A-B、B-C-A相序并连接至继电保护装置；它具有可靠性高，免维护，适用范围广，能够实现对相序的快速转换，大大缩短了调试时间，提高了工作效率，适用于各种三相交流试验仪的输出，具有很好的通用性等特点。
A phase sequence switching device for a three-phase AC tester, which includes an AC tester, the three-phase voltage or current output of the AC tester is connected to a switch with auxiliary contacts of different gears, the output of the switch Connected to the relay protection device; the output of the three-phase AC tester is fixed as the ABC phase sequence, and the switch switches the ABC phase sequence to include at least the CAB, BCA phase sequence and Connected to the relay protection device; it has high reliability, maintenance-free, wide application range, can realize the fast conversion of the phase sequence, greatly shortens the debugging time, improves the work efficiency, and is suitable for various three-phase AC test instruments The output has good versatility and other characteristics.
Description
Technical field
The utility model relates to a kind of device that the output three-phase alternating voltage of test instrument, electric current phase sequence can be changed, applicable to fields such as electric system, robotizations.
Background technology
At present, when power system relay protection device is debugged, for reaching the object of the various separate physical faults of simulation, testing crew need to be to protective relaying device each phase or the alternate fault simulation of carrying out.Yet for same segment protect, different phases or alternate fault amount are identical, testing crew must reach the object that changes phase sequence by manual change setting; This method efficiency is very low, wastes a large amount of time, and more gets half the result with twice the effort running into when situation about makeing mistakes is set.
Utility model content
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of debug time that can greatly shorten is provided, and improves commissioning staff's work efficiency, can carry out the phase-sequence changed device of the three-phase alternating current test instrument of quick phase sequence switching.
The purpose of this utility model completes by following technical solution; it comprises an ac test instrument; the three-phase voltage of described ac test instrument or electric current output are connected in a change-over switch with different gear auxiliary contacts, and the output of this change-over switch is connected to protective relaying device.
Described three-phase alternating current test instrument output is fixed as A-B-C phase sequence, after the break-make of described change-over switch by different gear auxiliary contacts, A-B-C phase sequence is switched to and at least comprises C-A-B, B-C-A phase sequence and be connected to protective relaying device.
The utility model compared with prior art, has following characteristics:
1. the utility model adopts traditional switching handle, realizes simply, and reliability is high, non-maintaining, applied widely, can be used in the switching of voltage, electric current.
2. the utility model can be realized the quick conversion to phase sequence, has greatly shortened debug time, has improved work efficiency.
3, the utility model is applicable to the output of various three-phase alternating current test instruments, has good versatility.
Accompanying drawing explanation
Fig. 1 is application structure schematic diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1,2; the utility model comprises an ac test instrument 1; the three-phase voltage of described ac test instrument 1 or electric current output are connected in a change-over switch 2 with different gear auxiliary contacts, and the output of this change-over switch 2 is connected to protective relaying device 3.
Described three-phase alternating current test instrument 1 output is fixed as A-B-C phase sequence, after the break-make of described change-over switch 2 by different gear auxiliary contacts, A-B-C phase sequence is switched to and at least comprises C-A-B, B-C-A phase sequence and be connected to protective relaying device 3.
The utility model is realized by the break-make of the different gear auxiliary contacts of change-over switch.The three-phase voltage of ac test instrument or electric current output are connected to change-over switch, and change-over switch output is connected to protective relaying device.The different gears of change-over switch can be realized the conversion of phase sequence; the output of three-phase alternating current test instrument is fixed as A-B-C order; after switching, can be exchanged into C-A-B, B-C-A etc., so which phase fault no matter protective relaying device need to simulate, and only need can realize fast by change-over switch.
Embodiment
The present embodiment take that to debug a set of 110kV circuit relay protection device be example, and to adopting the utility model and not adopting two kinds of methods to compare, service time is as following table:
It is foundation that above example be take typical case's section of protection fixed value checking; debugging for other sophisticated functions of protective device; such as broken voltage line overcurrent protection, distance and zero sequence after accelerated protection etc.; need a plurality of status switches to coordinate debugging, at this moment the superiority of the utility model phase-sequence changed device in debugging is able to sufficient embodiment especially.
Shown in Fig. 1; phase-sequence changed device described in the utility model is connected in three-phase alternating current test instrument and protective relaying device etc. by testing equipment; the three-phase voltage of three-phase alternating current test instrument output and sequence of currents are fixed as A-B-C order; after phase sequence conversion, the phase sequence that protective relaying device is experienced is respectively: A-B-C(gear 1), C-A-B(gear 2), B-C-A(gear 3).If three-phase alternating current test instrument arranges fault phase at A phase time, the fault phase that protective relaying device is experienced is respectively: A phase (gear 1), B phase (gear 2), C phase (gear 3).
The circuit theory wiring diagram of the utility model phase-sequence changed device is as Fig. 2.By gear switch, can realize the break-make of different auxiliary contacts, realize the switching of different separate, finally realize the conversion of phase sequence.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320251028.3U CN203432994U (en) | 2013-05-08 | 2013-05-08 | Phase sequence conversion device of three-phase alternating current tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320251028.3U CN203432994U (en) | 2013-05-08 | 2013-05-08 | Phase sequence conversion device of three-phase alternating current tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203432994U true CN203432994U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320251028.3U Expired - Fee Related CN203432994U (en) | 2013-05-08 | 2013-05-08 | Phase sequence conversion device of three-phase alternating current tester |
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| Country | Link |
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| CN (1) | CN203432994U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308727A (en) * | 2013-05-08 | 2013-09-18 | 嘉兴电力局 | Phase sequence switching device of three-phase alternating current tester |
| CN107910715A (en) * | 2017-06-19 | 2018-04-13 | 国网浙江省电力公司湖州供电公司 | A kind of thread-changing formula terminal box |
| CN109270315A (en) * | 2018-10-31 | 2019-01-25 | 国网四川省电力公司广元供电公司 | Two-phase inlet-outlet line polarity does not have a power failure commutation circuit |
-
2013
- 2013-05-08 CN CN201320251028.3U patent/CN203432994U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308727A (en) * | 2013-05-08 | 2013-09-18 | 嘉兴电力局 | Phase sequence switching device of three-phase alternating current tester |
| CN107910715A (en) * | 2017-06-19 | 2018-04-13 | 国网浙江省电力公司湖州供电公司 | A kind of thread-changing formula terminal box |
| CN109270315A (en) * | 2018-10-31 | 2019-01-25 | 国网四川省电力公司广元供电公司 | Two-phase inlet-outlet line polarity does not have a power failure commutation circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20200508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |