A Method for Insulation Fault Detection in a Distribution Network That Is Not Affected by Ground Parameter

In view of the difficulty of accurately sensing insulation faults in resonant grounding systems, this paper intends to carry out in-depth analysis of the equivalent model and transient characteristics of high-resistance grounding faults in resonant grounding systems, and through the combination of phase space trajectory reconstruction theory, reveal the distribution law of phase space trajectory of different lines or segments, and then propose the insulation fault perception method of distribution networks. Simulation models and mathematical analysis tools are used to verify the reliability of the method, which effectively improves the ability of resonant grounding system to deal with high-resistance grounding faults and comprehensively improves the safety and reliability of power supply of distribution network, which has practical significance for the automation and intelligent construction of distribution network.