Interference Characteristics of Electromagnetic Transient Overvoltage on Secondary Equipment of UHV Fixed Series Capacitors

Baojiang Tian, Pei Guo (), Xingwei Du, Xiaoyu Liao, Chao Xiao, Yiran Dong and Jingang Wang
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Baojiang Tian: State Grid Henan Electric Power Company, Zhengzhou 450052, China
Pei Guo: Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052, China
Xingwei Du: State Grid Henan Electric Power Company, Zhengzhou 450052, China
Xiaoyu Liao: State Grid Henan Electric Power Company, Zhengzhou 450052, China
Chao Xiao: Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052, China
Yiran Dong: State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Jingang Wang: State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China

Energies, 2024, vol. 17, issue 21, 1-12

Abstract: This manuscript addresses the issue of electromagnetic radiation interference experienced by secondary equipment in ultra-high voltage (UHV) fixed series capacitors (FSCs) under electromagnetic transient overvoltage conditions, which cannot be easily determined. To tackle this, a simulation and analysis method for the electromagnetic interference characteristics of secondary equipment is proposed. First, a primary system simulation model of UHV FSC is established, including modeling the platform’s multi-conductor system. The electromagnetic transient overvoltage signals between the low-voltage busbar and the high-potential platform are then simulated and analyzed under two conditions: spark gap triggering and disconnector operation. Next, a finite element model of secondary equipment is created to simulate and analyze the electric field distribution of different materials in the area of the measuring box. The shielding effectiveness of the measuring box is calculated using the overvoltage signals at the measuring box location as excitation. This method allows for the simulation of the electric field distribution in the measuring box area for different materials and calculates the shielding efficiency of the measuring box. It effectively simulates the complex electromagnetic environment of secondary equipment, assesses the electromagnetic shielding efficiency of the measuring box, and provides a theoretical basis for analyzing and improving the anti-interference characteristics of the measuring box.

Keywords: FSC; secondary equipment; shielding efficiency; finite element modeling; electromagnetic simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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