基于行波测距的35 kV风电场集电线路故障跳闸分析

Fault Tripping Analysis of 35 kV Wind Farm Collector Line Based on Fault Location of Traveling Wave Ranging

风电场集电线路大部分采用电缆架空混架形式铺设且线路中存在大量短支线以及T接风机,其线路结构特殊,同时风电场集电线路由于其运行方式以及结构的影响,在线路发生故障跳闸时尚无有效的故障测距方案,仅通过保护方案实现。本研究基于行波法故障测距角度,介绍风电场集电线路运行环境以及运行背景,并依据该风电场集电线路结构设计了合理的线路故障监测方案;采用行波法故障测距思路对风电场集电线路进行故障分析,实现风电场集电线路的故障点精确定位,填补了风电场集电线路故障测距的空白。

Most of the collecting lines of wind farm are laid in the form of cable overhead mixing,and there are a large number of short branch lines and T-connected fans in the line,which has its special line structure.At the same time,due to the influence of its line operation mode and its structure,there is no effective fault location scheme in case of fault trip of the line,and only the protection scheme is realized.Based on the fault location of traveling wave method,this paper first introduced the operating environment and operating background of the collector line of the wind farm,then a reasonable line fault monitoring scheme according to the structure of the collector line of the wind farm was designed.Adopting the fault location idea of traveling wave method to analyze the fault of the collector line of the wind farm,this scheme can realize the accurate fault location of the collector line of the wind farm,fill the gap of the fault location of the collector line of the wind farm,improve the"intelligent"operation and maintenance of the wind farm,greatly reduce the fault processing time of the collector line,so as to achieve economic benefits.