Title:
GAS DENSITY RELAY HAVING SIMULATION CHECK FUNCTION AND SIMULATION CHECK METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/218284
Kind Code:
A1
Abstract:
Disclosed are a gas density relay having a simulation check function and a simulation check method thereof. The gas density relay comprises a gas density relay body, a simulation reference signal unit, a simulation check signal unit, a driving contact action mechanism, and an intelligent control unit. The intelligent control unit obtains, according to the check, by the simulation reference signal unit, of a simulation check signal generated by the simulation check signal unit, the current working state of a monitoring part, so as to quantitatively and accurately measure the precision of the gas density relay; by providing the driving contact action mechanism, the gas density relay body generates an alarm and/or lock contact action to ensure that the contact execution mechanism of the gas density relay body and a contact itself are normal. The present application completes the online simulation or virtual check of the gas density relay while being used for monitoring the gas density of a gas-insulated or arc-extinguished electrical equipment, thereby improving working efficiency, reducing operation and maintenance costs, and guaranteeing safe operation of a power grid.
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Inventors:
JIN HAIYONG (CN)
Application Number:
PCT/CN2021/076129
Publication Date:
November 04, 2021
Filing Date:
February 09, 2021
Export Citation:
Assignee:
SHANGHAI ROYE ELECTRIC CO LTD (CN)
International Classes:
H01H35/26
Foreign References:
| CN111446118A | 2020-07-24 | |||
| CN110441195A | 2019-11-12 | |||
| US4783580A | 1988-11-08 | |||
| CN202010359601A | 2020-04-29 |
Other References:
See also references of EP 4145484A4
Attorney, Agent or Firm:
SHANGHAI IPOWER LAW FIRM (CN)
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