US 12,038,480 B2
Electrical system with on-line sampling verification function and verification method thereof
Tiexin Xia, Shanghai (CN); Bing He, Shanghai (CN); Min Chang, Shanghai (CN); Zhengcao Guo, Shanghai (CN); Haiming Liao, Shanghai (CN); Haiyong Jin, Shanghai (CN); and Enlin Wang, Shanghai (CN)
Assigned to Shanghai Roye Electric Co., Ltd., Shanghai (CN)
Appl. No. 17/640,776
Filed by SHANGHAI ROYE ELECTRIC CO., LTD., Shanghai (CN)
PCT Filed Aug. 26, 2020, PCT No. PCT/CN2020/111252
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/043040, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 201910834369.5 (CN), filed on Sep. 4, 2019.
Prior Publication US 2022/0341993 A1, Oct. 27, 2022
Int. Cl. G01R 31/327 (2006.01); G01N 9/00 (2006.01); G01R 15/20 (2006.01); G01R 19/00 (2006.01); H01H 35/26 (2006.01)
CPC G01R 31/3278 (2013.01) [G01N 9/002 (2013.01); G01R 15/202 (2013.01); G01R 19/0092 (2013.01); H01H 35/26 (2013.01); G01N 2009/006 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electrical system with online sampling and check function, characterized in that the electrical system comprises:
an electric equipment, in which an air chamber is arranged, and the air chamber is filled with insulating gas;
a gas density relay, which is mounted outside the air chamber of the electrical equipment, or mounted outside the air chamber of the electrical equipment via a valve;
a gas inlet of the valve is connected with the air chamber of the electrical equipment, and a gas outlet is connected with a gas path of the gas density relay;
a gas path of a pressure regulating mechanism is connected with the gas path of the gas density relay, and the pressure regulating mechanism is configured for pressure rise and fall of a gas path pressure of gas density relay, to enable a contact signal action of the gas density relay;
a gas density detection sensor, which is communicated with the gas density relay;
an online check contact signal sampling unit is connected with the gas density relay and configured to sample a contact signal of the gas density relay under the ambient temperature;
a intelligent control unit is respectively connected with the gas density detection sensor, the pressure regulating mechanism, the valve and the online check contact signal sampling unit; the intelligent control unit is configured to at least one of manage the closing or opening of the valve, control the pressure regulating mechanism, collect pressure values, temperature values, gas density values, as well as check at least one of the contact signal operating value and contact signal return value of the gas density relay;
the contact signal operating value and contact signal return value of the gas density relay include at least one of alarm signals and/or blocking signals.