Title:
LOW-VOLTAGE TRANSFORMER AREA LOAD NON-POWER-CUT SWITCHING SYSTEM AND WORKING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/000585
Kind Code:
A1
Abstract:
The present invention relates to the technical field of electric power transportation inspection, protection, and supply. Disclosed are a low-voltage transformer area load non-power-cut switching system and a working method thereof. At present, power-off switching is needed during power grid maintenance. The present invention comprises a main conductive branch, a short-time conductive branch, a mains electricity bypass, a control circuit, and a current/voltage signal acquisition module; the main conductive branch comprises a second circuit breaker Q2; the second circuit breaker Q2 has one end connected to a mobile box substation/power car S1 and the other end connected to a wire outlet end of a low-voltage distribution box JP1; the short-time conductive branch comprises an electronic solid state switch D1; the short-time conductive branch is connected in parallel to the second circuit breaker Q2; the mains electricity bypass comprises a first circuit breaker Q1; and the first circuit breaker Q1 has one end connected to a wire outlet end of the low-voltage distribution box JP1 and the other end connected to a wire inlet end of the low-voltage distribution box JP1. According to the present technical solution, the electronic solid state switch D1 bears a transient process, a short-time power failure phenomenon caused by breaking of a mechanical contact is solved, and thus non-power-cut switching of a load between a power grid and a standby power source is achieved.
Inventors:
XIA JUNQIANG (CN)
CHEN YUN (CN)
KONG YIXIAO (CN)
XIE YUN (CN)
ZHU HUAFENG (CN)
ZHAO GUOQING (CN)
MAO YAONENG (CN)
CHEN YUN (CN)
KONG YIXIAO (CN)
XIE YUN (CN)
ZHU HUAFENG (CN)
ZHAO GUOQING (CN)
MAO YAONENG (CN)
Application Number:
PCT/CN2021/136824
Publication Date:
January 26, 2023
Filing Date:
December 09, 2021
Export Citation:
Assignee:
HANGZHOU POWER EQUIPMENT MFG CO LTD (CN)
FUYANG RONGDA COMPLETE SET ELECTRIC EQUIPMNENT MFG BRANCH OF HANGZHOU POWER EQUIPMENT MFG CO LTD (CN)
STATE GRID ZHEJIANG HANGZHOU CITY FUYANG DISTR POWER SUPPLY CO LTD (CN)
FUYANG RONGDA COMPLETE SET ELECTRIC EQUIPMNENT MFG BRANCH OF HANGZHOU POWER EQUIPMENT MFG CO LTD (CN)
STATE GRID ZHEJIANG HANGZHOU CITY FUYANG DISTR POWER SUPPLY CO LTD (CN)
International Classes:
H02J9/06; H02J3/38; H02J3/42
Foreign References:
| CN215300162U | 2021-12-24 | |||
| CN113452076A | 2021-09-28 | |||
| CN113595227A | 2021-11-02 | |||
| CN111162605A | 2020-05-15 | |||
| CN104009537A | 2014-08-27 | |||
| CN110994693A | 2020-04-10 | |||
| JP2000261986A | 2000-09-22 |
Attorney, Agent or Firm:
ZHEJIANG SHINE PATENT OFFICE (GENERAL PARTNER) (CN)
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