电网不同接地方式对选线保护影响的分析  

Study on influence of the different grounding methods of grid on the protection of line selection

作　　者：王拓 覃继翔 

机构地区：[1]铜仁供电局,贵州铜仁554300

出　　处：《贵州电力技术》2010年第8期5-8,共4页Guizhou Electric Power Technology

摘　　要：通过分析高压电网不同的接地方式，得出了中性点在不同接地方式下的特点，以及不同接地方式对选线式漏电保护灵敏性和保护选线的影响，并得出零序电压整定值与保护装置检测漏电故障的能力和灵敏度的关系。Through analyzing the different grounding methods of power grids, the characteristics of different methods of neutral ground and the effect of leakage protection sensitivity and the protection of line selection by different grounding are obtained. The relation between value setting of zero sequence voltage and the leakage detection of protection equipment capability and sensitivity are also obtained.

关 键 词：接地方式 选线保护 灵敏性 

分 类 号：TM8[电气工程—高电压与绝缘技术]