High impedance fault detection and isolation in power distribution networks using support vector machines

Abstract

This paper proposes an accurate High Impedance Fault (HIF) detection and isolation scheme in a power distribution network. The proposed scheme utilizes the data available from voltage and current sensors. The technique employs multiple algorithms consisting of Principal Component Analysis, Fisher Discriminant Analysis, Binary and Multiclass Support Vector Machine for detection and identification of the high impedance fault. These data-driven techniques have been tested on IEEE 13-node distribution network for detection and identification of high impedance faults with the broken and unbroken conductor. Further, the robustness of machine learning techniques has also been analysed by examining their performance with variation in loads for different faults. Simulation results for different faults at various locations have shown that proposed methods are fast and accurate in diagnosing high impedance faults. Multiclass Support Vector Machine gives the best result to detect and locate high impedance faults accurately. It ensures reliability, security and dependability of the distribution network.

Keywords

• Fisher Discriminant Analysis
• High impedance fault
• Principal Component Analysis
• Support vector machines