Research on hydrogen diffusion characteristics under typical defects of inverted oil-immersed current transformer

Energy Reports

Peng Wu¹  Youyuan Wang²  Jiansheng Li²  Bonan Li³  Xiaohan Li⁴  Tianyu Xiong⁴ 

[1] Corresponding author.;System Security and New Technology, Chongqing University, Chongqing 400044, China;State Grid Jiangsu Electric Power CO., LTD. Research Institute, Nanjing 211100, China;;State Key Laboratory of Power Transmission Equipment &

关键词: Inverted oil-immersed current transformer;    Multi-physics coupling;    Hydrogen diffusion;   

DOI  :  

来源: DOAJ

【 摘 要 】

Inverted Oil-immersed Current Transformer (CT) is an important electrical equipment in the power system, which plays the role of current conversion and voltage isolation, also plays an indispensable role in the stable operation of the power system. Studies have shown that hydrogen is the earliest and easiest produced gas in the discharge and overheating faults of CTs, and hydrogen is also considered an early signal of equipment failure. In order to study the distribution and diffusion of hydrogen under typical defects of CTs, this paper established a 110 kV CT electric-thermal-flow multi-physics coupling three-dimensional simulation model. Using the method of finite element analysis, the internal temperature field of the CT and the distribution and diffusion of hydrogen are obtained. At the same time, an CT test platform is established to verify the accuracy and validity of the simulation results.

【 授权许可】

Unknown