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

IF 6 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-03-01 DOI:10.1016/j.asej.2025.103334

Aida Abedzadeh Janiabadi, Saeid Hasheminejad

引用次数: 0

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 %.

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基于S变换的配电系统高阻抗故障识别新算法

利用s变换的优越特性，提出了一种用于配电系统高阻抗故障检测的新算法。这里，将ST应用于当前信号的一个周期，提取信号的所有时间和频率信息。然后，从ST输出中计算出总谐波失真（THD）、均匀谐波能量（EHE）、变差系数（VC）和相位偏差（PD）四个数值指标。根据这四个指标的值和一些预定义的阈值，将HIF与配电系统的正常情况和其他事件区分开来。通过PSCAD/EMTDC软件模拟的测试信号和从实际配电网中提取的实验测试信号，对该算法的性能进行了评价。在这里，总算法实现时间为21 ms。在存在30 dB高斯白噪声的情况下，HIF的识别准确率达到98.48%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.