High impedance fault detection based on linear prediction

Grimaldi, Reginaldo Barnabé Gonzalez; Chagas, Talita Santos Alves; Montalvão, Jugurta; Brito, Núbia Silva Dantas; Santos, W. C.; Ferreira, Tarso Vilela

doi:10.1016/j.epsr.2020.106846

Cited by 14 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Expression (2) shows the polynomial expansion coefficients L n (kT ) of a signal i(x); in fact, the coefficients L n (kT ) can be computed through a convolution between the filter functions D n (x) and the studied signal i(x). Notice that the process is followed by a subsampling process at multiple positions of T , and the filter functions D n (x) are defined by:…”

Section: High Impedance Faults Modelling and Analysis A Hermite Trans...mentioning

confidence: 99%

“…One of the more important issues of distribution grids is the protection against short circuits that produce high current magnitudes resulting from "low impedance fault (LIFs)". However, in some cases, the fault may present small current magnitudes originated by "high impedance faults (HIFs)", which are characterized by a nonlinear behavior [1], [2]. Therefore, the correct discrimination between LIFs and HIFs has become an essential subject of interest because HIFs present complex transient behaviours that complicate their detection.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Hermite Transform Based Algorithm for Detection and Classification of High Impedance Faults

et al. 2022

View full text Add to dashboard Cite

This work proposes a new algorithm to classify high impedance faults (HIFs) in distribution systems. HIFs can be represented by small current magnitudes with non-linear variations, which complicate their detection in distribution grids. The proposed method uses the Hermite transform (HT) as a signal processing technique that offers several advantages, one of the more important being the ability to analyze the signal at multiple resolution levels and at different frequency bands thanks to their filter functions based on Gaussian derivatives. The Hermite coefficients are used to extract signal features that allow efficient identification of the transient behaviour related to HIFs and other typical faults. In this sense, a multichannel approach based on the Hermite transform is proposed to classify different types of faults and HIFs. This analysis is carried out in a distribution network considering photovoltaic (PV) systems considering three different classifiers, which are also used to compare our results with the discrete wavelet transform (DWT) as signal decomposition model; the comparison suggests that our proposal presents better performance discriminating HIFs from typical faults.

show abstract

Section: High Impedance Faults Modelling and Analysis A Hermite Trans...mentioning

confidence: 99%

mentioning

confidence: 99%

Hermite Transform Based Algorithm for Detection and Classification of High Impedance Faults

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Such approach requires a high calculation burden for lower tolerance rates and can be considered only effective at single-feeder distribution lines. Linear prediction was used by [65] to represent time series of signal samples over time. The model uses the energy raising of the linear prediction error to detect HIFs.…”

Section: Mathematical Approximationmentioning

confidence: 99%

High-Impedance Fault Diagnosis: A Review

Aljohani

Habiballah

2020

Energies

View full text Add to dashboard Cite

High-impedance faults (HIFs) represent one of the biggest challenges in power distribution networks. An HIF occurs when an electrical conductor unintentionally comes into contact with a highly resistive medium, resulting in a fault current lower than 75 amperes in medium-voltage circuits. Under such condition, the fault current is relatively close in value to the normal drawn ampere from the load, resulting in a condition of blindness towards HIFs by conventional overcurrent relays. This paper intends to review the literature related to the HIF phenomenon including models and characteristics. In this work, detection, classification, and location methodologies are reviewed. In addition, diagnosis techniques are categorized, evaluated, and compared with one another. Finally, disadvantages of current approaches and a look ahead to the future of fault diagnosis are discussed.

show abstract

“…Com uma taxa de acerto de 80% e utilizando sinais reais, os autores de Grimaldi et al (2021) utilizam um preditor linear, que é um método matemático que visa predizer o valor de uma nova amostra como sendo uma combinação linear de amostras passadas. Os autores afirmam que o método apresenta resultados melhores que os métodos que utilizam a TW.…”

Section: Métodos De Detecção De Falta De Alta Impedânciaunclassified

Detecção de faltas de alta impedância do tipo fase-terra em sistemas de distribuição: uma abordagem baseada em sua progressão no domínio do tempo e da frequência

Trondoli¹

View full text Add to dashboard Cite

Em primeiro lugar, agradeço ao professor José Carlos de Melo Vieira Júnior, que enriqueceu meu vocabulário com novos significados para a palavra orientar. Obrigado pela confiança, liderança, discussões relevantes e empatia durante todo o processo.Agradeço a todos os integrantes do grupo de estudos de faltas de alta impedância, em especial à Gabriela Nunes Lopes, por participar ativamente nas simulações, discussões e revisão do texto desta tese.Ao Thiago Souza Menezes o meu agradecimento por ter contribuído nas simulações dos eventos que me possibilitaram aperfeiçoar o algoritmo proposto nesta tese. Ainda, por aprimorar o modelo em LaTeX e disponibilizá-lo para a comunidade acadêmica.

show abstract

High impedance fault detection based on linear prediction

Cited by 14 publications

References 17 publications

Hermite Transform Based Algorithm for Detection and Classification of High Impedance Faults

Hermite Transform Based Algorithm for Detection and Classification of High Impedance Faults

High-Impedance Fault Diagnosis: A Review

Detecção de faltas de alta impedância do tipo fase-terra em sistemas de distribuição: uma abordagem baseada em sua progressão no domínio do tempo e da frequência

Contact Info

Product

Resources

About