Lightning back flashover tripping patterns on a 275/132 kV quadruple circuit transmission line in Malaysia

Halim, S.A. and Bakar, Ab Halim Abu and Illias, Hazlee Azil and Hassan, N.H.N. and Mokhlis, Hazlie and Terzija, V. (2016) Lightning back flashover tripping patterns on a 275/132 kV quadruple circuit transmission line in Malaysia. IET Science, Measurement & Technology, 10 (4). pp. 344-354. ISSN 1751-8822, DOI

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Severe lightning environment has been the major cause of overhead transmission line outages. In order to minimise the impact of lightning overvoltage, it is necessary to further evaluate lightning performance of any line before implementing specific protection methods. Therefore, in this work, a thorough study on back flashover tripping patterns of a 275/132 kV quadruple steel monopole towers in Malaysia is presented. Several design parameters such as lightning current magnitude, tower footing resistance and power frequency voltage were varied to investigate their influences on the line performance associated with lightning events. The results show that each parameter gives a significant effect on the flashover patterns. For each case, no flashover was recorded on the higher voltage circuits (275 kV), even though the line consists of tall structures, which might be more susceptible to lightning strikes at the upper part. Regardless of the effect of tower height, flashovers occur mainly on 132 kV circuits due to difference in the line insulation level. The results obtained were then used in designing appropriate protection scheme to further improve the transmission line lightning performance, mainly in terms of reducing the double circuit line outages.

Item Type: Article
Uncontrolled Keywords: Flashover; Overvoltage protection; Lightning protection; Power transmission lines; Power transmission protection
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 11 Oct 2017 06:01
Last Modified: 10 Oct 2019 02:36

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