Study on Malfunction of OCR Due to Penetration of DER into Power Distribution System with SFCL

Min-Ki Park; Sung-Hun Lim

doi:10.3390/en16176137

Energies (Aug 2023)

Study on Malfunction of OCR Due to Penetration of DER into Power Distribution System with SFCL

Min-Ki Park,
Sung-Hun Lim

Affiliations

Min-Ki Park: Department of Electrical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 156-743, Republic of Korea
Sung-Hun Lim: Department of Electrical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 156-743, Republic of Korea

DOI: https://doi.org/10.3390/en16176137
Journal volume & issue: Vol. 16, no. 17
p. 6137

Abstract

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Due to the demand for eco-friendly energy, distributed energy resources (DERs) using renewable energy have increased. The increase in DER has caused the power system to become more complex and caused problems in the protection system. Typical problems include an increase in fault current and a problem that causes malfunction of the overcurrent relay (OCR). If the fault current increases and exceeds the capacity of the existing protection devices, it may lead to a large blackout. The most effective way to limit the fault current is to install a superconducting current limiter (SFCL). The installation of SFCL and system penetration of DER both affect OCR operating characteristics. In this paper, a simulated power distribution system is constructed and OCR malfunctions caused by DER penetration and SFCL installation are analyzed.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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