Research on Fault Identification Technology of Jumper Windage Yaw Flashover

Abstract

jumper has been weakness of protection of windage yaw flashover in Grid, timely and effective identification method of windage yaw flashover is lacked in the existing power system; focusing on the point that less jumper windage yaw flashover, the phenomenon of jumper windage yaw flashover is explored, by checking windage yaw angle and the minimum air space under strong wind, to confirm the possibility of jumper windage yaw flashover caused by strong wind; by mining the law of the jumper windage yaw flashover, and applying the fractal theory calculation, the electromagnetic transient characteristics of transient current travelling waves is studied, to propose a jumper windage yaw fault identification method based on the similarity of transient current travelling waves, which is successfully applied to Hainan Power Grid’s Fuguan line jumper windage yaw flashover in 2011.