Title:
PROCESSING METHOD FOR PHASE-TO-PHASE SHORT CIRCUIT OF THREE-PHASE POWER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/252701
Kind Code:
A1
Abstract:
Disclosed is a processing method for a phase-to-phase short circuit of a three-phase power system. Several partition switches are provided on a circuit. The several partition switches divide the circuit into several protection zones, and several segment switches are provided in the protection zones. When a phase-to-phase short circuit fault occurs on the circuit, a power inlet partition switch cuts off a fault current, a detection loop comprising a phase-to-phase short-circuit fault point and a fault phase is then constructed and a controllable current is injected. A segment switch detects the controllable current and trips according to a preset condition so as to remove the phase-to-phase short circuit fault. The method may not only effectively remove the phase-to-phase short circuit fault, but also may reduce the power failure area. Moreover, the use of a high-current cut-off switch may also be reduced, thereby effectively reducing switch costs.
Inventors:
XUE ZHANYU (CN)
XING JINCHUN (CN)
XING JINCHUN (CN)
Application Number:
PCT/CN2022/077126
Publication Date:
December 08, 2022
Filing Date:
February 21, 2022
Export Citation:
Assignee:
BAODING YUXIN ELECTRIC TECH CO LTD (CN)
International Classes:
H02H3/08; H02H7/26
Foreign References:
| CN113725808A | 2021-11-30 | |||
| CN101662144A | 2010-03-03 | |||
| CN103117537A | 2013-05-22 | |||
| US20080024142A1 | 2008-01-31 |
Other References:
SU QI: "Research on the Application of "anti-jumping" System in Coal Mine Power Supply", ENERGY TECHNOLOGY AND MANAGEMENT, vol. 42, no. 1, 28 February 2017 (2017-02-28), pages 160 - 162, XP093010204, ISSN: 1672-9943, DOI: 10.3969/j.issn.1672-9943.2017.01.057
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