Zobrazeno 1 - 10
of 906
pro vyhledávání: '"High impedance fault"'
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 159, Iss , Pp 110036- (2024)
The neutral effectively grounded system (NEGS), increasingly adopted in medium-voltage urban AC distribution networks, exhibits heightened susceptibility to fault-induced overcurrent. Despite the deployment of traditional three-zone and zero-sequence
Externí odkaz:
https://doaj.org/article/aa3c075b62e84eefa36c5418be67549a
Autor:
Vyshnavi Gogula, Belwin Edward
Publikováno v:
Frontiers in Energy Research, Vol 12 (2024)
This paper presents a novel approach for detecting high-impedance faults (HIF) in distribution systems that uses the Hilbert transform. Our approach is based on determining the instantaneous frequency of signals and detecting deviations from a refere
Externí odkaz:
https://doaj.org/article/91f9d01bbafa48bda82fa2afb9822330
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 158, Iss , Pp 109965- (2024)
The growing penetration of converter interfaced generation creates unprecedented challenges to protection strategies at all voltage levels. This paper proposes a novel Negative Sequence Current Injection (NSCI)-based active protection scheme for isla
Externí odkaz:
https://doaj.org/article/339f66fbd19f44d5a398243189f31d09
Autor:
Nauman Ali Larik, Wei Lue, Fayez F. M. El-Sousy, Abdul Khalique Junejo, Muhammad Faizan Tahir
Publikováno v:
IEEE Access, Vol 12, Pp 124604-124618 (2024)
AC microgrids are a contemporary adaptation of traditional power distribution networks, propelled by the rapid integration of renewable energy resources. Yet, their dynamic operational nature poses distinct protection & control challenges. This paper
Externí odkaz:
https://doaj.org/article/422c0a5d9f024ef59bef2ed45a421415
Publikováno v:
IEEE Access, Vol 12, Pp 11024-11034 (2024)
Detection of high impedance faults (HIF) is one of the biggest challenges in power distribution networks. HIF usually occurs when conductors in the distribution network are broken and accidently come into contact the ground or a tree branch. The curr
Externí odkaz:
https://doaj.org/article/0dae716e1bf240189f00d2f59767bd3d
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 161, Iss , Pp 110187- (2024)
Hybrid HVDC transmission technology advancement has led to significant progress. A reliable and effective DC line protection scheme is crucial for DC transmission systems. The traditional protection schemes suffer from insufficient sensitivity and re
Externí odkaz:
https://doaj.org/article/f51388f8173341d8be3ee0aee9a2d93d
Akademický článek
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Autor:
Balamurali Krishna Ponukumati, Anil Kumar Behera, Lipsa Subhadarshini, Pampa Sinha, Manoj Kumar Maharana, Arapirala Venkata Pavan Kumar
Publikováno v:
Engineering, Technology & Applied Science Research, Vol 14, Iss 2 (2024)
Unusual fault scenarios can occur on the utility grid in a power system network. Cross-Country Faults (CCFs) connected to the High-Impedance Fault (HIF) syndrome are more prone to occur in forested areas due to thunderstorms, cyclones, and improper v
Externí odkaz:
https://doaj.org/article/9daa040bdd474dca9519ecef8baa224e
Autor:
Paolo Mercorelli
Publikováno v:
Sensors, Vol 24, Iss 8, p 2656 (2024)
Fault-finding diagnostics is a model-driven approach that identifies a system’s malfunctioning portion. It uses residual generators to identify faults, and various methods like isolation techniques and structural analysis are used. However, diagnos
Externí odkaz:
https://doaj.org/article/27e32aaf4e01483e8bb6f49abe0221e7
Publikováno v:
Nigerian Journal of Technological Development, Vol 20, Iss 4 (2023)
The detection and localization of high impedance faults (HIF) in power systems are challenging due to the low fault current magnitude, which often falls below the detection threshold of conventional devices. HIF events introduce harmonics into the ne
Externí odkaz:
https://doaj.org/article/593389d98fa24ae4abb52b0d011bf140