配电网接地方式与供电可靠性的关联分析  

Analysis on Correlation between Grounding Mode and Power Supply Reliability of Distribution Networks

作　　者：林志超 

机构地区：[1]广东电网有限责任公司惠州供电局,广东惠州516001

出　　处：《广东电力》2015年第11期87-91,共5页Guangdong Electric Power

摘　　要：介绍了配电网中性点经消弧线圈接地与经小电阻接地两种方式的技术特征,逐条阐明这两种接地方式各自的优缺点,分析两者存在的主要技术问题,对两者与供电可靠性的关系进行关联分析。指出采用小电阻接地并不会降低供电可靠性。阐述了小电阻接地系统保护对线路高阻接地无法监控的原因与后果,同时提出解决措施。The paper introduces technical characteristics of neutral point grounding via arc suppression coil and small resistance grounding;it expounds merits and demerits of each of the two grounding modes and analyzes their technical problems.The paper al-so analyzes correlation between the two modes and power supply reliability and indicates that small resistance grounding can not de-crease power supply reliability.Finally,the paper discusses reasons and consequence that small resistance grounding system protec-tion can not monitor high resistance grounding of lines;in addition,it presents corresponding solutions.

关 键 词：配电网 供电可靠性 消弧线圈接地 小电阻接地 高阻接地 保护监控 

分 类 号：TM732[电气工程—电力系统及自动化]