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A Study on an Operation Strategy of Dual-Infeed HVDC System

Authors
Kim, Chan-KiJang, Gilsoo
Issue Date
1월-2017
Publisher
KOREAN INST ELECTR ENG
Keywords
HVDC; Multi-infeed HVDC; Line arrester; Voltage control
Citation
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY, v.12, no.1, pp.45 - 52
Indexed
SCIE
SCOPUS
KCI
Journal Title
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
Volume
12
Number
1
Start Page
45
End Page
52
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/85165
DOI
10.5370/JEET.2017.12.1.045
ISSN
1975-0102
Abstract
This paper deals with the operation strategy of reactive power in a multi-infeed HVDC (MIHVDC) system, in which several converters are connected to the same or nearby separate AC buses. The potential problems concerning a MIHVDC system when feeding a weak AC network are as follows: the need for coordination of the recovery control, the possibility of voltage instability or low quality of the area connected to the MIHVDC system, and the risk of mutual commutation failures. These problems in MIHVDC systems are similar to those in single-infeed HVDC (SIHVDC) systems, but the differences with the phenomenon of the SIHVDC system are the interactions between converters. The main reason for the potential problems of HVDC systems (MIHVDC or SIHVDC) is voltage variation; therefore, to mitigate the voltage variations, the performances of the HVDC system should be enhanced. Consequently, to mitigate the potential problems of MIHVDC systems, several solutions are suggested in this study, including installing STATCOM and installing a line arrester on the tower. The study results will be applied to a multi-infeed HVDC system in Korea.
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Jang, Gil soo
공과대학 (전기전자공학부)
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