基于希尔伯特-黄的配电网单相接地故障选线方法

Single-Phase-to-Ground Fault Line Selection Method of Distribution Network Based on HHT

近年来,配电网的网络拓扑结构随着不断变多的分布式电源的加入而变得越来越复杂。本文针对10KV的小电流接地系统,研究一种基于HHT的含分布式电源的配电网单相接地故障选线方法。本文的主要思想是在提取处理复杂故障信号后,利用奇异值检测法选出故障线路,然后再通过搭建Matlab仿真模型,分析仿真结果,进一步验证所提算法的自适应性、准确性以及可靠性。

In recent years, the network topology of distribution network becomes more and more complex with the addition of more and more distributed power supplies. In this paper, a method of Single-phase-to-ground fault line selection for a small current grounding system based on 10 KV distribution network is proposed, which is based on HHT. The main idea of this paper is on the extraction of complex fault signal, using the singular value method to detect the fault line, and then by building Matlab simulation model, simulation results verify the proposed algorithm, adaptive, accuracy and reliability.