摘要
配电网的继电保护对供电质量有着根本性的影响。首先介绍了目前配电网采用的继电保护;然后分析配电网的故障特点,配电网存在的小电流接地故障选线定位困难、高阻故障保护和重合闸技术等问题,并对这些问题的研究现状进行综述;最后分析了分布式电源接入配电网对保护的影响,并展望未来配电网的继电保护发展趋势。
Relay protection of distribution network has essential impact on power supply quality. This paper firstly introduces relay protection used for present distribution network and then analyzes fault characteristics of the distribution network and problems such as difficulty in route selection and positioning for small current grounding fault, high resistance fault protection and reclosing technology. Meanwhile, it summarizes study status quo of these problems. At last, it analyzes impact of distributed power source connecting with distribution network on protection and expects development trend of relay protection of distribution network in the future.
出处
《广东电力》
2014年第5期51-55,共5页
Guangdong Electric Power
基金
广东省绿色能源技术重点实验室资助项目(2008A060301002)
广东电网公司科技项目(K-GD2012-218)
关键词
继电保护
小电流接地故障
高阻故障
分布式电源
relay protection
small current grounding fault
high resistance fault
distributed power source
