A study on operation zone of distance relay on transmission line connected UPFC of KEPCO systems

Seung Hyuk Lee, Chang Ho Jung, Il Ryong Lee, Jin-O Kim

Research output: Contribution to journalArticle

Abstract

This paper presents an apparent impedance calculation procedure for distance relaying of ransmission line involving UPFC (Unified Power Flow Controller) devices between Kangjin and fangheung of KEPCO (Korea Electric Power Cooperation) systetns. The presence of UPFC ignificantly affects the trip boundaries that are also adversely affected by fault resistance combines vith remote end infeed. Depending on the UPFC location, the trip boundary is influenced by the ault location, pre-fault condition, the arc fault resistance and the parameters of the UPFC itself series voltage magnitude and phase angle). With the changes of these parameters, the measurement ind protective range (trip boundaries) of the adaptive distance relay can also be changed. So, to malyze the operating characteristic of relaying in the power system is the most important part in the leld of system protection. This paper presents the apparent impedance calculations and the distance relay setting: haracteristics for faults involving the UPFC in the KEPCO systems.

Original languageEnglish
Pages (from-to)2105-2116
Number of pages12
JournalInternational Energy Journal
Volume6
Issue number1 PART 2
StatePublished - 2005 Jun 1

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Lee, Seung Hyuk ; Jung, Chang Ho ; Lee, Il Ryong ; Kim, Jin-O. / A study on operation zone of distance relay on transmission line connected UPFC of KEPCO systems. In: International Energy Journal. 2005 ; Vol. 6, No. 1 PART 2. pp. 2105-2116.
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A study on operation zone of distance relay on transmission line connected UPFC of KEPCO systems. / Lee, Seung Hyuk; Jung, Chang Ho; Lee, Il Ryong; Kim, Jin-O.

In: International Energy Journal, Vol. 6, No. 1 PART 2, 01.06.2005, p. 2105-2116.

Research output: Contribution to journalArticle

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