风力发电站高压输电线路故障定位方法

针对目前方法对高压输电线路进行故障定位时，由于未能基于信息熵指标提取输电线路故障的信号特征，导致该方法在进行故障定位时，存在定位精度低、定位误差大、定位时间长、定位效果差的问题，提出基于数据驱动的风力发电站高压输电线路故障定位方法。对风力发电系统进行具体分析，基于数据驱动方法构建发电系统的系统模型；以模型为基础，获取故障信号的信息熵指标以及近似熵指标，根据获取指标提取故障的信号特征；利用多点的数据故障定位方法，对风力发电站高压输电线路中的故障进行定位。实验结果表明，运用该方法进行故障定位时，定位精度高、定位误差小、定位时间短以及定位效果好。

Fault location method of high voltage transmission line in wind power statio

Aiming at problems of low positioning accuracy,large positioning error,long positioning time and poor positioning effect in fault location of high-voltage transmission line in wind power station due to the failure to extract the signal characteristics of transmission line fault based on information entropy index.The wind power generation system is analyzed in detail,and the system model of power generation system is constructed based on the data-driven method.Based on model,the information entropy index and approximate entropy index of fault signal are obtained,and the signal characteristics of fault are extracted according to the obtained index.The multi-point data fault location method is used to locate the fault in the high-voltage transmission line of wind power station.The experimental results show that this method has high positioning accuracy,small positioning error,short positioning time and good positioning effect.