Title:
DIGITAL GAS DENSITY RELAY HAVING SELF-DIAGNOSIS FUNCTION AND SELF-DIAGNOSIS METHOD OF RELAY
Document Type and Number:
WIPO Patent Application WO/2021/227583
Kind Code:
A1
Abstract:
Disclosed are a digital gas density relay having a self-diagnosis function and a self-diagnosis method of the relay. The relay comprises a gas density detection sensor, an intelligent control unit, an annunciator, a communication module, a normally-open electric control valve, and a normally-closed electric control valve; one end of the normally-open electric control valve is provided with an interface communicated with an electrical device, the other end of the normally-open electric control valve is communicated with one end of the normally-closed electric control valve, the other end of the normally-closed electric control valve is communicated with air, and the gas density detection sensor is provided on a gas path between the normally-open electric control valve and the normally-closed electric control valve; the intelligent control unit is connected to the gas density detection sensor, the annunciator, the communication module, the normally-open electric control valve, and the normally-closed electric control valve, respectively, so as to complete on-line monitoring of the gas density value of the electrical device and control the annunciator to control switching of the on-off states of the normally-open electric control valve and the normally-closed electric control valve. According to the present application, online self-inspection or self-diagnosis is completed while the gas density of the gas-insulated or arc-extinguished electrical device is monitored, no maintenance is required, operation and maintenance costs are reduced, and safe operation of a power grid is guaranteed.
Inventors:
JIN HAIYONG (CN)
Application Number:
PCT/CN2021/076137
Publication Date:
November 18, 2021
Filing Date:
February 09, 2021
Export Citation:
Assignee:
SHANGHAI ROYE ELECTRIC CO LTD (CN)
International Classes:
H01H35/26; G01N9/00; G01R31/327
Foreign References:
| CN110501260A | 2019-11-26 | |||
| CN111508770A | 2020-08-07 | |||
| CN211929386U | 2020-11-13 | |||
| CN109752649A | 2019-05-14 | |||
| KR20200013334A | 2020-02-07 | |||
| US20080163936A1 | 2008-07-10 |
Attorney, Agent or Firm:
SHANGHAI IPOWER LAW FIRM (CN)
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