Open AccessCorrosion Failure Analysis of Electrical Equipment in Distribution Power System under High Temperature and High Humidity Environment
Author(s) -
Xuntao Shi,
Qingpai Ke,
Jinyong Lei,
Zhimin Yuan
Publication year - 2020
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 - 10.1088/1742-6596/1578/1/012204
Subject(s) - corrosion , materials science , metallurgy , humidity , automation , relative humidity , recloser , environmental science , engineering , electrical engineering , mechanical engineering , physics , circuit breaker , thermodynamics
The problem of corrosion failure of distribution automation terminal in hot and humid environment is very prominent, which seriously restricts the development of smart grid in southern power grid. Therefore, this paper chooses three overhead FTU terminals as the research object to study characteristics of corrosion failure of distribution automation terminal. The corrosion failure analysis was carried out by SEM and EDS. EDS data showed that the content of oxygen in corrosion region was significantly higher than the slight corrosion region, the presence of sulfur and chlorine indicated that the corrosion environment was mainly a humid environment containing sulfur and chlorine. SEM found that the corrosion failure of terminal equipment is mainly due to the environment such as high temperature, humidity, chloride ion and sulfur. At the same time, the exposure of substrate is caused by the damage of plating layer or leakage plating which was further development of corrosion. Therefore, according to the corrosion characteristics of distribution automation terminal in hot and humid environment, the corresponding protective measures ensuring the safe operation of distribution automation system is proposed, which can extend the service life of distribution automation terminal and provide reliable basis for the future empirical test.