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Analysis and Mitigation on Switching Transients of Medium-Voltage Low-Harmonic Filter Banks

Title
Analysis and Mitigation on Switching Transients of Medium-Voltage Low-Harmonic Filter Banks
Author
김진오
Keywords
back-to-back inrush current; capacitor switching; harmonic filter banks; switching transients; transient recovery voltage
Issue Date
2020-05
Publisher
MDPI
Citation
ENERGIES, v. 13, no. 9, article no. 2187
Abstract
This paper presents the switching transients of medium-voltage low-harmonic filter banks, which have alower back-to-back inrush current and higher transient recovery voltage (TRV) compared with capacitor banks. The switching transients of the filter banks are described by the analytical approach and field measurements for 150 MVA back-to-back filter banks are provided to support the switching phenomena described in this paper. As a mitigation measure of the high transient recovery voltage, a double-breaker type switchgear is analyzed in terms of the operating sequence and the time of the upper and lower breakers. From the analyses, an operation scheme for the double-breaker switchgear is proposed to avoid insulation failure of the breaker during the interruption by mitigating the transient recovery voltage across each breaker.
URI
https://www.mdpi.com/1996-1073/13/9/2187https://repository.hanyang.ac.kr/handle/20.500.11754/166665
ISSN
1996-1073
DOI
10.3390/en13092187
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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