Types and safety technical requirements of system earthing 系统按地的型式及安全技术要求
The status of hvdc insulation monitoring was analysed . the method and problems of earth - fault detection for hvdc system were analysed as well . the operation principle and features of a new type hvdc insulation monitoring system were introduced . a scheme of hvdc system earth - fault detection was presented 分析了国内直流系统绝缘监测领域的现状,就现有的直流系统接地故障检测方法及存在的问题进行了分析;介绍了一种新型直流系统绝缘监测系统的工作原理及其特点,提出一种直流系统接地故障检测的方案。