基于Zigbee和零序电流增量法的配网单相接地故障定位方法  

A solution based on Zigbee and component of zero sequence current for online fault location of single-phase fault in distribution network

作　　者：周湶[1] 马小敏[1] 陈伟根[1] 李剑[1] 杨柱石[1] 伍科[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《电力系统保护与控制》2012年第9期62-68,共7页Power System Protection and Control

基　　金：国家重点基础研究发展计划(973计划)(2009CB724507);国家创新研究群体基金(51021005)~~

摘　　要：针对目前配电网单相接地故障定位结果不够准确的问题,提出了基于Zigbee无线技术和零序电流增量法的配电网单相接地故障定位方法。分析了Zigbee无线传感器网络技术以及利用其采集线路零序电流的优势,设计了基于无线传感器网络的单相接地故障定位系统结构,采用了精确时钟协议(PTP)的时间同步算法解决了时间同步性问题,完成了用于构建无线Zigbee网络的协调器节点和传感器节点的软硬件设计。在实验室环境下,对电流传感器的幅频特性和无线传感器网络实测的线路零序电流进行了实验分析,结果表明,提出的采集分布式线路零序电流的方法以及利用其进行配网故障定位的方案具有较好的可行性和优越性。According to the deficiencies of fault location in distribution network at present, a new fault location method based on the Zigbee technology and component of zero sequence current is presented. The Zigbee wireless sensor network technology and advantages of using Zigbee technology in the zero-sequence current collection are analyzed. The structure of the positioning system based on the wireless sensor network is designed and the synchronism problem is solved by means of PTPtime synchronization program. Coordinator node and sensor node which are applied to construct wireless networks are analyzed and designed in hardware and software. In laboratory conditions, the amplitude-frequency characteristics of the current sensor and zero-sequence current error measured by wireless sensor network system are analyzed. Experimental results show that the distributed zero-sequence current collection method and single-phase fault positioning method of using zero-sequence current have good credibility and superiority.

关 键 词：无线传感器网络 配电网 单相接地 零序电流 故障定位 ZIGBEE 

分 类 号：TM862[电气工程—高电压与绝缘技术]