The test point offset corrosion of grounding network fault diagnosis methods

In order to solve the impact of test point offset on the grounding network corrosion fault diagnosis results, Simulate offset conditions using PSCAD, Comparative analysis of fault diagnosis results of fully measurable branches. Find the law that implies it and propose a method of calculating the test points at different offset levels. According to the method, the original large-change sensitivity nonlinear fault diagnosis mathematical model and the hybrid particle swarm optimization algorithm are improved. Simulation experiments show that the improved fault diagnosis algorithm is accurate and effective for solving the grounding grid corrosion diagnosis problem of test point offset.