부산대학교 도서관

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.