Taking the heating of a 110kV high-voltage cable GIS terminal as an example, this article analyzes the impact of cable installation process and grounding method on the operation of cable accessories, and finally discusses the grounding process of cable accessories. The cable terminal was abnormally heated, and during operation, live detection found cross-linking errors and excessive circulating current. After power outage and disassembly, it was found that the tail pipe structure design of the connector was unreasonable, and the grounding current flowed through the cone-shaped spring, causing heating and burning of the cable body and epoxy sleeve.
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Zhang et al. (2024) studied this question.
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