CN103308727A - Phase sequence switching device of three-phase alternating current tester - Google Patents
Phase sequence switching device of three-phase alternating current tester Download PDFInfo
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- CN103308727A CN103308727A CN2013101707528A CN201310170752A CN103308727A CN 103308727 A CN103308727 A CN 103308727A CN 2013101707528 A CN2013101707528 A CN 2013101707528A CN 201310170752 A CN201310170752 A CN 201310170752A CN 103308727 A CN103308727 A CN 103308727A
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Abstract
The invention provides a phase sequence switching device of a three-phase alternating current tester. The phase sequence switching device comprises an alternating current tester, a three-phase voltage or current output of the alternating current tester is connected with a changeover switch with different gear auxiliary contacts, and an output of the changeover switch is connected with a relay protection device; outputs of the three-phase alternating current tester are fixed as an A-B-C phase sequence, and through the on and off of the different gear auxiliary contacts of the changeover switch, the A-B-C phase sequence is switched to at least include C-A-B and B-C-A phase sequences which are connected with the relay protection device. The phase sequence switching device has the characteristics of being high in reliability, free from maintenance, wide in application range, and capable of realizing fast switching of the phase sequences, greatly shortening the debugging time and improving the working efficiency, is applicable to the output of various three-phase alternating current testers, and has good universality and the like.
Description
Technical field
The present invention relates to be a kind of can be with the device of the output three-phase alternating voltage of test instrument, the conversion of electric current phase sequence, applicable to fields such as electric system, robotizations.
Background technology
At present, when power system relay protection device was debugged, for reaching the purpose 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, and testing crew must reach the purpose that changes phase sequence by manual change setting; This method efficient is very low, wastes a large amount of time, and more gets half the result with twice the effort when situation about makeing mistakes is set running into.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and a kind of debug time that can greatly shorten is provided, improve 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 objective of the invention is to finish 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.
The output of described three-phase alternating current test instrument is fixed as the A-B-C phase sequence, after the break-make of described change-over switch by different gear auxiliary contacts, the A-B-C phase sequence switched to comprises at least C-A-B, B-C-A phase sequence and is connected to protective relaying device.
The present invention compared with prior art has following characteristics:
1. the present invention adopts traditional switching handle, realizes that simply reliability is high, and is non-maintaining, applied widely, can be used in the switching of voltage, electric current.
2. the present invention can realize the quick conversion to phase sequence, has greatly shortened debug time, has improved work efficiency.
3, the present invention is applicable to the output of various three-phase alternating current test instruments, has good versatility.
Description of drawings
Fig. 1 is application structure schematic diagram of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
The present invention will be described in detail below in conjunction with accompanying drawing: shown in Fig. 1,2; the present invention includes 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.
1 output of described three-phase alternating current test instrument is fixed as the A-B-C phase sequence, after the break-make of described change-over switch 2 by different gear auxiliary contacts, the A-B-C phase sequence switched to comprises at least C-A-B, B-C-A phase sequence and is connected to protective relaying device 3.
The present invention realizes 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 the A-B-C order; can be exchanged into C-A-B, B-C-A etc. after the switching, so which phase fault no matter protective relaying device need to simulate, and only needs can realize fast by change-over switch.
Embodiment
The present embodiment is to debug a cover 110kV circuit relay protection device as example, to adopting the present invention and not adopting two kinds of methods to compare service time such as following table:
Above example is take typical case's section of protection fixed value checking as foundation; 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 cooperate debugging, at this moment the superiority of phase-sequence changed device of the present invention in debugging is able to sufficient embodiment especially.
Shown in Figure 1; phase-sequence changed device of the present invention is connected in three-phase alternating current test instrument and protective relaying device etc. by test equipment; the three-phase voltage of three-phase alternating current test instrument output and sequence of currents are fixed as the 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 the three-phase alternating current test instrument arranges fault phase at the 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).
Circuit theory wiring diagram such as Fig. 2 of phase-sequence changed device of the present invention.Can realize the break-make of different auxiliary contacts by gear switch, realize different separate switching, finally realize the conversion of phase sequence.
Claims (2)
1. the phase-sequence changed device of a three-phase alternating current test instrument; it comprises an ac test instrument; the three-phase voltage or the electric current output that it is characterized in that described ac test instrument 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.
2. the phase-sequence changed device of three-phase alternating current test instrument according to claim 1; it is characterized in that described three-phase alternating current test instrument output is fixed as the A-B-C phase sequence; after the break-make of described change-over switch by different gear auxiliary contacts, the A-B-C phase sequence switched to comprise at least C-A-B, B-C-A phase sequence and be connected to protective relaying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101707528A CN103308727A (en) | 2013-05-08 | 2013-05-08 | Phase sequence switching device of three-phase alternating current tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101707528A CN103308727A (en) | 2013-05-08 | 2013-05-08 | Phase sequence switching device of three-phase alternating current tester |
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| Publication Number | Publication Date |
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| CN103308727A true CN103308727A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101707528A Pending CN103308727A (en) | 2013-05-08 | 2013-05-08 | Phase sequence switching device of three-phase alternating current tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168225A (en) * | 2017-05-22 | 2017-09-15 | 南京南瑞继保电气有限公司 | A kind of different model protects the AC sampling switching method of measuring and controlling equipment |
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| SU1403205A1 (en) * | 1986-06-13 | 1988-06-15 | Горьковский Автомобильный Завод | Arrangement for protecting three-phase induction motors against phase failure |
| CN2072230U (en) * | 1990-03-29 | 1991-02-27 | 刘金铎 | Portable tester for protective relay |
| CN2082480U (en) * | 1990-12-21 | 1991-08-07 | 中国工程物理研究院材料研究所 | Phase order controlled instrument |
| EP1289093B1 (en) * | 2001-08-27 | 2007-07-18 | Kabushiki Kaisha Toshiba | Protective relay system |
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| CN201742300U (en) * | 2010-03-04 | 2011-02-09 | 宝山钢铁股份有限公司 | Phase sequence converter |
| CN202772837U (en) * | 2012-10-13 | 2013-03-06 | 刘兴让 | Voltage phase sequence monitoring device for three-phase alternating-current motor |
| CN203432994U (en) * | 2013-05-08 | 2014-02-12 | 国家电网公司 | Phase sequence conversion device of three-phase alternating current tester |
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2013
- 2013-05-08 CN CN2013101707528A patent/CN103308727A/en active Pending
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| SU1403205A1 (en) * | 1986-06-13 | 1988-06-15 | Горьковский Автомобильный Завод | Arrangement for protecting three-phase induction motors against phase failure |
| CN2072230U (en) * | 1990-03-29 | 1991-02-27 | 刘金铎 | Portable tester for protective relay |
| CN2082480U (en) * | 1990-12-21 | 1991-08-07 | 中国工程物理研究院材料研究所 | Phase order controlled instrument |
| EP1289093B1 (en) * | 2001-08-27 | 2007-07-18 | Kabushiki Kaisha Toshiba | Protective relay system |
| CN201341018Y (en) * | 2008-12-16 | 2009-11-04 | 广东志高空调有限公司 | Air conditioner phase-sequence controller with automatic phase change function |
| CN101609991A (en) * | 2009-07-15 | 2009-12-23 | 王霞 | Three-phase load transfer device |
| CN201742300U (en) * | 2010-03-04 | 2011-02-09 | 宝山钢铁股份有限公司 | Phase sequence converter |
| CN202772837U (en) * | 2012-10-13 | 2013-03-06 | 刘兴让 | Voltage phase sequence monitoring device for three-phase alternating-current motor |
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| 张永胜: "ZJCT-3继电保护测试装置介绍", 《电站***工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168225A (en) * | 2017-05-22 | 2017-09-15 | 南京南瑞继保电气有限公司 | A kind of different model protects the AC sampling switching method of measuring and controlling equipment |
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Owner name: JIAXING POWER SUPPLY COMPANY, STATE GRID ZHEJIANG Effective date: 20140109 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: JIAXING ELECTRIC POWER BUREAU Effective date: 20140109 |
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Free format text: CORRECT: ADDRESS; FROM: 314000 JIAXING, ZHEJIANG PROVINCE TO: 100031 XICHENG, BEIJING |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140109 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Jiaxing Power Supply Company, State Grid Zhejiang Electronic Power Company Address before: Jiaxing City, Zhejiang province 314000 North Road No. 99 Applicant before: Jiaxing Electric Power Bureau |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20130918 |