Open AccessFailure causes and solutions of relay protection switching power supply
Author(s) -
Hongyue Zhang,
Zhiwen Liu,
Fan Zhang,
Song Hong-tao,
Zhilei Niu,
Zhuo Xiong,
Maojun Deng,
Jiang Shuai,
Wenzheng Li,
Xinwen Li
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2196/1/012039
Subject(s) - relay , reliability (semiconductor) , capacitor , power (physics) , electrolytic capacitor , power grid , key (lock) , reliability engineering , failure mechanism , electrical engineering , voltage , computer science , engineering , computer security , physics , structural engineering , quantum mechanics
Relay protection device plays a key role in the stable operation of power grid, and the failure of switching power supply is the main reason for the unstable operation of relay protection device. This paper studies the failure causes of relay protection switching power supply, and concludes that electrolytic capacitor is the key component leading to the failure of power plug-in. At the same time, the failure mechanism and life influencing factors of aluminum electrolytic capacitor are deeply studied, and the improvement measures are put forward. According to the research results of this paper, the switching power supply has the characteristics of high reliability and long life.