학술논문
Parameter Design of Surface Functionally Graded Materials for HVDC GIL Spacer under Variable Temperature Gradient
Document Type
Conference
Author
Source
2023 IEEE 4th International Conference on Electrical Materials and Power Equipment (ICEMPE) Electrical Materials and Power Equipment (ICEMPE), 2023 IEEE 4th International Conference on. :1-4 May, 2023
Subject
Language
Abstract
To optimize the electric field distribution of HVDC GIL spacer under working conditions, the variable temperature surface functionally graded materials (VT-SFGM) spacer with consideration of the room and gradient temperature are designed. After iterative optimization, the convex surface coating thickness of VT-SFGM spacer presents a U-shaped distribution. Under the constant temperature condition, the electric field strength of the VT-SFGM spacer at the same position is reduced by 49.5%. As the temperature rises, the high electric field area of the uniform spacer gradually transfers form HV conductor to GND shell. Under the temperature gradient of 60°C, the maximum electric field strength of VTSFGM spacer decreases by 64%. Under the current-fluctuating condition%.’ the change rate of the VT-SFGM spacer is only 12.1