110kV电力电缆护层电压仿真与补偿研究

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Abstract Aiming at the problem that the cable is laid asymmetrically due to urban construction, which leads to excessive induced voltage of cable sheath, an inductive voltage compensation method for cable sheath based on inductance compensation is proposed. First, the induced voltage of cable sheath of single circuit and double circuits is theoretically deduced, and the induced voltage value of each phase sheath under symmetrical and asymmetric laying conditions is obtained. Then the principle of inductance compensation method is introduced, and the sheath voltage of single and double circuit cables is simulated and analyzed through PSCAD/EMTDC software. The sheath induced voltage before and after compensation is compared, and the feasibility of inductance compensation technology is verified. Finally, a prototype is made to test the cable laid in Nanjing and other regions on the spot to verify the correctness of the simulation data. Through comparison, it is found that there is a good coincidence effect. The study results show that the compensation effect is proportional to the number of compensation turns, and the shorter the air gap length is, the higher the compensation effect will be without overcompensation.

Key words： cable sheath voltage inductance voltage compensation

Received: 09 January 2023

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	Articles by authors
	XU Lixin
	WANG Peng
	CHEN Libin

Cite this article:

XU Lixin,WANG Peng,CHEN Libin. Study on simulation and compensation of 110kV power cable sheath voltage[J]. Electrical Engineering, 2023, 24(3): 36-43.

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http://dqjs.cesmedia.cn/EN/Y2023/V24/I3/36

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