Analysis of Transmission Lightning Arrester Locations Using Tflash

Abstract Tropical countries with extensive lightning activity, such as Malaysia, encounter numerous problems on their electrical transmission and distribution systems. To overcome the problem and improve transmission line performance, a detailed lightning study is required to analyse the correspondi...

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Bibliographic Details
Published in:Telkomnika 2016-12, Vol.14 (4), p.1228
Main Authors: Jambak, M. I., Nawawi, Z., Kurnia, R.F., Buntat, Z., Sidik, M. A. B., Arief, Y. Z., Wahab, A. A., Ramli, Z., Ramly, M. E.
Format: Article
Language:English
Subjects:
Aluminum
Arresters
Conduction
Conductors
Electric equipment
Electric power supplies
Electric power systems
Flashover
Insulation
Lightning strikes
Shielding
Transmission lines
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Summary:Abstract Tropical countries with extensive lightning activity, such as Malaysia, encounter numerous problems on their electrical transmission and distribution systems. To overcome the problem and improve transmission line performance, a detailed lightning study is required to analyse the corresponding lines and determine the best location for transmission line arrester (TLA) installation. Strikes have caused extensive damage to electrical equipment of the Tenaga Nasional Berhad (TNB) power system [3], and it is estimated that about 50-60% of tripping of the TNB's power system, especially of transmission and distribution networks, has been caused by lightning [4]. In order to reduce this number, TNB has been conducting numerous studies to ensure the reliability and sustainability of the electrical power supply [5]. Commissioned on 14 August 2007 for Line 1 and on 15 August 2007 for Line 2, the phase conductors used for the OHTL are 2 × 300 mmsq aluminium conductor steel-reinforced (ACSR Batang) with a route length of approximately 14.7 km. a) Geographical profile All tower locations were plotted on Google Earth to delineate the OHTL end to end, as shown in Figure 1. Back flashover (BF), which can occur when lightning strikes the ground wires or towers, and shielding flashover, which occurs when lightning strikes the phase conductors and exceeds the voltage of the the insulation strength, are the types of flashovers that occur along transmission lines. For this study, the line performance tripping rate was calculated as: (ProQuest: ... denotes formula omitted.) Where lightning performance (LP) is the tripping (T)...
ISSN:1693-6930
2302-9293
DOI:10.12928/telkomnika.v14i4.3792