High Impedance Fault Detection Protection Scheme for Power Distribution Systems

Protection schemes are used in safe-guarding and ensuring the reliability of an electrical power network. Developing an effective protection scheme for high impedance fault (HIF) detection remains a challenge in research for protection engineers. The development of an HIF detection scheme has been a...

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Main Authors: Katleho Moloi, Innocent Davidson
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/10/22/4298
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author Katleho Moloi
Innocent Davidson
author_facet Katleho Moloi
Innocent Davidson
author_sort Katleho Moloi
collection DOAJ
description Protection schemes are used in safe-guarding and ensuring the reliability of an electrical power network. Developing an effective protection scheme for high impedance fault (HIF) detection remains a challenge in research for protection engineers. The development of an HIF detection scheme has been a subject of interest for many decades and several methods have been proposed to find an optimal solution. The conventional current-based methods have technical limitations to effectively detect and minimize the impact of HIF. This paper presents a protection scheme based on signal processing and machine learning techniques to detect HIF. The scheme employs the discrete wavelet transform (DWT) for signal decomposition and feature extraction and uses the support vector machine (SVM) classifier to effectively detect the HIF. In addition, the decision tree (DT) classifier is implemented to validate the proposed scheme. A practical experiment was conducted to verify the efficiency of the method. The classification results obtained from the scheme indicated an accuracy level of 97.6% and 87% for the simulation and experimental setups. Furthermore, we tested the neural network (NN) and decision tree (DT) classifiers to further validate the proposed method.
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spelling doaj.art-58f167d54b084cd78a6d44dca8b409832023-11-24T09:09:16ZengMDPI AGMathematics2227-73902022-11-011022429810.3390/math10224298High Impedance Fault Detection Protection Scheme for Power Distribution SystemsKatleho Moloi0Innocent Davidson1Department of Electrical Power Engineering, Durban University of Technology, Durban 4000, South AfricaDepartment of Electrical Power Engineering, Durban University of Technology, Durban 4000, South AfricaProtection schemes are used in safe-guarding and ensuring the reliability of an electrical power network. Developing an effective protection scheme for high impedance fault (HIF) detection remains a challenge in research for protection engineers. The development of an HIF detection scheme has been a subject of interest for many decades and several methods have been proposed to find an optimal solution. The conventional current-based methods have technical limitations to effectively detect and minimize the impact of HIF. This paper presents a protection scheme based on signal processing and machine learning techniques to detect HIF. The scheme employs the discrete wavelet transform (DWT) for signal decomposition and feature extraction and uses the support vector machine (SVM) classifier to effectively detect the HIF. In addition, the decision tree (DT) classifier is implemented to validate the proposed scheme. A practical experiment was conducted to verify the efficiency of the method. The classification results obtained from the scheme indicated an accuracy level of 97.6% and 87% for the simulation and experimental setups. Furthermore, we tested the neural network (NN) and decision tree (DT) classifiers to further validate the proposed method.https://www.mdpi.com/2227-7390/10/22/4298classificationhigh impedance faultpower systemsupport vector machinewavelet packet transform
spellingShingle Katleho Moloi
Innocent Davidson
High Impedance Fault Detection Protection Scheme for Power Distribution Systems
Mathematics
classification
high impedance fault
power system
support vector machine
wavelet packet transform
title High Impedance Fault Detection Protection Scheme for Power Distribution Systems
title_full High Impedance Fault Detection Protection Scheme for Power Distribution Systems
title_fullStr High Impedance Fault Detection Protection Scheme for Power Distribution Systems
title_full_unstemmed High Impedance Fault Detection Protection Scheme for Power Distribution Systems
title_short High Impedance Fault Detection Protection Scheme for Power Distribution Systems
title_sort high impedance fault detection protection scheme for power distribution systems
topic classification
high impedance fault
power system
support vector machine
wavelet packet transform
url https://www.mdpi.com/2227-7390/10/22/4298
work_keys_str_mv AT katlehomoloi highimpedancefaultdetectionprotectionschemeforpowerdistributionsystems
AT innocentdavidson highimpedancefaultdetectionprotectionschemeforpowerdistributionsystems