A fast current relaying algorithm for distribution systems based on discrete setting value

Zhenxing Li; Cong Hu; Andres Annuk; Abdulaziz Alkuhayli; Udaya Dampage; Loiy Al-Ghussain; Mohamed A. Mohamed

Energy Reports (Nov 2022)

A fast current relaying algorithm for distribution systems based on discrete setting value

Zhenxing Li,
Cong Hu,
Andres Annuk,
Abdulaziz Alkuhayli,
Udaya Dampage,
Loiy Al-Ghussain,
Mohamed A. Mohamed

Affiliations

Zhenxing Li: College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China; Hubei Key Laboratory of Cascaded Hydropower Stations Operation & Control, China Three Gorges University, Yichang 443002, China; Correspondence to: No. 8, Daxue Road, Xiling District, Yichang City, Hubei Province, China.
Cong Hu: College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China; Hubei Key Laboratory of Cascaded Hydropower Stations Operation & Control, China Three Gorges University, Yichang 443002, China
Andres Annuk: Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu 51006, Estonia
Abdulaziz Alkuhayli: Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
Udaya Dampage: Faculty of Engineering, Kotelawala Defence University, Kandawala Estate, Ratmalana 10390, Sri Lanka
Loiy Al-Ghussain: Mechanical Engineering Department, University of Kentucky, Lexington, KY 40506, USA
Mohamed A. Mohamed: Electrical Engineering Department, Faculty of Engineering, Minia University, Minia 61519, Egypt; Corresponding author.

Journal volume & issue: Vol. 8
pp. 11088 – 11100

Abstract

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The traditional current protection uses the RMS value of the current to compare with a setting-value to identify faults, which is the typical protection scheme for the transmission lines of the power distribution systems. The current is calculated by the fast Fourier transform (FFT) algorithm. As the calculation of the RMS current requires a long time, the speed of the current quick break protection is reduced. In this regard, a fast current protection algorithm based on the discrete setting value is presented in this paper to solve this problem. The main emphasis is placed on the construction of the discrete sequence of setting-value and the protection criterion. The protection startup criterion and action criterion are constructed based on comparisons between discrete sequence of setting-value and sampling values of the current fault component. The operation characteristics and reliability of the fast current protection are analyzed. The performance of the novel fast current protection algorithm is compared with that of the conventional current protection through simulations based on PSCAD/EMTDC. The results verified that the novel fast current protection algorithm has good operation characteristics under different fault conditions.

Published in Energy Reports

ISSN: 2352-4847 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: http://www.journals.elsevier.com/energy-reports/

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