针对影响高压电缆外护套绝缘的试验、维护、护层保护的接地方式、护层接地故障的查找等技术问题进行探讨并组织实施,实现了武钢电网内110 kV及以上高压电缆护层接地方式的优化,达到了靠试验和运行中护层环流检测值的分析来判断外护套绝缘的状况,掌握了护层接地故障查找方法和检测程序,确保了武钢110 kV电网的安全可靠.%Technical issues including grounding modes for test, maintenance and shield protection influencing the insulation of high-voltage cable sheath and the grounding fault search technology were explored and implemented. The grounding mode of the 110 kV and above high-voltage cable sheath in Wuhan Steel power grid was optimized, to judge the sheath insulation condition by test and analyze the circular current test values in operation, and the search method and test program for the sheath grounding faults were grasped, which ensured the safety and reliability of Wuhan Steel's 110 kV power grid.
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