Zobrazeno 1 - 10
of 7 073
pro vyhledávání: '"High impedance"'
Autor:
Yuting Lan, Kun Yu, Xiangjun Zeng, Rong Cai, Qingbo Deng, Chenyu Wu, Shigeng He, Shijie Xu, Youcheng Jia
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 162, Iss , Pp 110264- (2024)
The weak characteristics of high-impedance faults and the complex attributes of cross-country faults make faulty feeder detection of cross-country high-impedance faults difficult in medium-voltage networks. This paper deduces the zero-sequence equiva
Externí odkaz:
https://doaj.org/article/ba1c98d2f32b49f0ac4483c4dbe1c1ef
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
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 159, Iss , Pp 110013- (2024)
Detecting High Impedance Faults (HIFs) in Distribution Systems (DSs) still requires effective solutions. HIFs can cause damage, such as shock hazards and bushfires. However, conventional protection cannot identify HIFs due to their low fault current,
Externí odkaz:
https://doaj.org/article/0aaf5108834b4ca3ba7bd950efee1a12
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:
CSEE Journal of Power and Energy Systems, Vol 10, Iss 1, Pp 197-207 (2024)
Detection of high impedance faults (HIFs) has been traditionally a main challenge in the protection of distribution systems, since they do not generate enough current to be reliably detected by conventional over-current relays. Data-based methods are
Externí odkaz:
https://doaj.org/article/fa595238242d438dbcdf344df3eaac2e
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:
IEEE Access, Vol 12, Pp 10932-10945 (2024)
Aimed at the high-impedance fault detection problem, this paper proposes a fault-feature enhancement method for actively detecting high-impedance faults. The essential characteristic of this method is that the fault features are actively enhanced wit
Externí odkaz:
https://doaj.org/article/2735fb6b18144d5cb4beb860e15323ce