Work

A new algorithm for the identification of high impedance faults in distribution systems utilizing S transform

Year: 2025

Type: article

Abstract: Using the superior specifications of S-transform (ST) a new algorithm is presented for the high impedance fault (HIF) detection in distribution systems. Here, ST is applied to one cycle of the current signal and all time and frequency information of the signal are extracted. Then, four numerical indices named as total harmonic distortion (THD), even harmonic energy (EHE), variation coefficient (VC) and phase deviation (PD) are calculated from the ST output. According to the values of the four indices and some predefined thresholds, HIF is discriminated from the normal situation and other events of the distribution system. Performance of the proposed algorithm is evaluated by the test signals simulated by PSCAD/EMTDC software and experimental test signals extracted from a real distribution network. Here, the total algorithm implementation time is 21 ms. With the presence of 30 dB gaussian white noise, the HIF identification accuracy is cleared to be 98.48 %.

Source: Ain Shams Engineering Journal

DOI: 10.1016/j.asej.2025.103334

Authors: Aida Abedzadeh Janiabadi, Saeid Hasheminejad

Institution: Graduate University of Advanced Technology

Language: English

Topic: Power Systems Fault Detection

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,200