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我国煤矿高压供电系统都是小接地电流系统,目前尚没有一个比较完善可靠的漏电保护,要实施80年颁布的《煤矿安全规程》第407条的规定要求,任务还是相当艰巨,既要安全可靠,又要节省改造费用,既要保证移动电站UGSP型电缆的重点保护,又要兼顾一般常用的铠装电缆及架空线路的检漏保护,现就高压漏电保护在煤矿供电系统中推广应用谈一些想法。 1.完善配电线路各级的漏电保护目前地面变电所一般只有利用母线绝缘监
China’s coal mine high-voltage power supply systems are small grounded current system, there is not a more complete and reliable leakage protection, to implement the 80 years promulgated << Coal Mine Safety Regulations >> Article 407 requirements, the task is still quite arduous, it is necessary to be safe and reliable , But also to save the cost of renovation, it is necessary to ensure that the focus of mobile power station UGSP-type cable protection, but also take into account the commonly used armored cables and overhead lines of the leak detection protection, are on the high-voltage leakage protection in the coal supply system to promote the application of some idea. 1. Improve distribution lines at all levels of leakage protection At present, ground substations generally use only bus insulation