Electric Field Improvement for High-Voltage Bushings
Li Li,
Qi Li,
Shuxin Xu,
Rui Liu,
Manling Dong,
Si Ying,
Jieyuan Tian,
Wanpeng Xin,
Manu Haddad,
Xingliang Jiang
Affiliations
Li Li
Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
Qi Li
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Shuxin Xu
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Rui Liu
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Manling Dong
State Grid Henan Province Electric Power Scientific Research Institute, Zhengzhou 450052, China
Si Ying
China Electric Power Research Institute, Wuhan 100192, China
Jieyuan Tian
Bushing (Beijing) HV Electric Co., Ltd., Beijing 100000, China
Wanpeng Xin
Bushing (Beijing) HV Electric Co., Ltd., Beijing 100000, China
Manu Haddad
Advanced High Voltage Engineering (AHIVE) Research Centre, School of Engineering, Cardiff University, Cardiff CF24 3AA, UK
Xingliang Jiang
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Resin-impregnated paper (RIP) bushing has gained significant interest due to its extended application in Extra High Voltage (EHV) and Ultra High Voltage (UHV) electricity transmission systems. However, the design criterion of its overall structure, the geometry parameters of the condenser layers, and stress release devices, etc., are still not fully understood. This article proposes a unique electric field optimization technique to integrate both the analytical and the numerical methods. The charge simulation method (CSM) is employed to create the overall equipotential surface, within which the finite element analysis (FEA) is adapted to study the localized field enhancement effects, taking into consideration the multi-physics coupled fields. A case study is performed on an actual UHV bushing. The results are compared to the traditional methods, to demonstrate the benefit of the hybrid method.
