Volume 60

Fault Location Algorithm for Distribution Networks Based on Differential CurrentMatrix Pinghao Ni, Yuancun Nie, Meng Li, Jinghan He, Wenjia Ma

Abstract

To address the challenges in distribution network protection caused by high-penetration distributed generation (DG) integration, this study proposes a multi-source information fusion-based fault location algorithmfor distribution networks. A dynamic current matrix forfault zones and a topology-adaptive node differential matrix are constructed, and the fault location matrix isderived through matrix multiplication. Grounded in the current differential principle for distribution networkfault localization, logical analysis is performed on the fault discrimination matrix. PSCAD simulation demonstrated that the criterion is capable of accurately locating fault nodes. The algorithm exhibits advantages such as simplicity in principle, low memory consumption, high computational efficiency, and superior accuracy, demonstrating strong practicality. It provides a robustsolution for active distribution networks with high-penetration renewable energy.

Keywords distribution network, distributed generation,matrix algorithm, fault location