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Nonlinear Switching Transient Field Simulation of Cable Joint without Residual Charge

Mingyan Wu  Jun Xiong  Lei Liao  Lu Zhu  Ruxin Zhang  Zheng Wu  Gang Du  Xueyou Huang  Haiming Li  Jian Zhang  Sizhuo Liao  Binxian Lu  
【摘要】:The analysis of the impulse voltage on the internal electric field of the cable joint plays a key role in studying the breakdown of the joint. Based on the finite element method, a three-dimensional electromagnetic field simulation model of the cable joint is established in this paper. Simulation results show that the voltage at the head of the cable joint reaches about twice the impulse voltage. The increase of the conductivity of semi-conductive material also leads to the increase of electric field intensity. Then, several points and curves at different positions are selected for further analysis in this paper. Among them, the electric field distortion at the edge of the high voltage shield is the most serious and the electric field in the air gap is the least.

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