由于35 kV单芯电缆屏蔽存在单点或多点接地，在运行过程中屏蔽层产生感应电压，屏蔽层形成环流，使电缆发热，加速老化，甚至形成很高的感应电压，击穿电缆外护套。针对这种现象，对35 kV长距离单芯电缆屏蔽实施交叉互联，有效降低感应电压，保证电缆的安全稳定运行。%Due to single-point and multi-point grounding of the shield of the 35 kV single-core cable, induced voltage is generated and convective current formed in the shielding layer, which heats the cable, accelerates aging of the cable and even forms high induced volt-age to breakdown the outer sheath of the cable. To solve this problem, the shielding of long-distance 35 kV single-core cable was cross connected, effectively reducing induced volt-age and ensuring safe and stable operation of the cables.
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