基于光纤通信的中低压馈电线路区域保护设计  

Design of Regional Protection for Medium and Low-voltageFeeder Lines Based on Optical Fiber Communication

作　　者：韩天博 朱凯[2] Han Tianbo;Zhu Kai(State Grid Jiangsu Electric Power Engineering Consulting Co.,Ltd.,Nanjing Jiangsu 210024,China;State Grid Suzhou Power Supply Co.,Suzhou Anhui 234000,China)

机构地区：[1]国网江苏省电力工程咨询有限公司,江苏南京210024 [2]国网宿州供电公司,安徽宿州234000

出　　处：《电气自动化》2020年第4期31-33,共3页Electrical Automation

摘　　要：针对中低压馈线线路中分支线路众多使得多端线路电流差动保护的应用推广受限这一难题,提出一种基于光纤通信的馈电线路区域保护新方案。具体介绍了装置的硬件构成、同步方式、通信方式及测试结果等。研究结果表明,提出的具有自适应能力的区域保护装置,可有效判别保护区域内的相间故障,并对发生在馈线分支的故障实施有效隔离。With respect to the difficult problem of limited popularization and application of current differential protection of the multi-terminal line due to multiple branch lines on the middle and low-voltage feeder line,a new scheme of regional protection for feeder lines based on optical fiber communication was proposed.Hardware structure,synchronization method,communication mode and test results of the device were introduced in detail.The research results showed that the proposed regional protection device with adaptive ability could effectively identify faults between phases in the protection area and isolate the faults on branches of the feeder line.

关 键 词：配电网 馈电线路 差动保护 区域保护 光纤通信 

分 类 号：TM76[电气工程—电力系统及自动化]