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HV/EHV transmission lines performance calculation of lightning stroke by using corridor method

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3 Author(s)
Eko Yudo Pramono ; P3B Sumatera, Transm. & Load Dispatch Centre of Sumatera, Planning Dept., PT.PLN (Persero), Padang, Indonesia ; Reynaldo Zoro ; Rizki Wahyuni

High Voltage / Extra High Voltage (HV/EHV) performance calculation of lightning stroke used to use thunder days method. With the technology improvement where it can be known the ground flash density, the Lightning Performance of HV/EHV transmission lines can be accurately done by using the ground flash density in the region that are passed by the transmission lines. To obtain the lightning performance similar to the flash density, it is used a Corridor Method so it can be evaluated the corelation between lightning stroke to the ground with the failures data of which caused the trip. Based on the performance calculation, when it is found above the transmission lines standard design, improvements are needed to increase the performance of the transmission lines. With the technical and economical optimation consideration, Corridor Method can be used to determine all critical points along the transmission lines, so it is easily known of which tower that must be repaired. The calculation using Corridor Method provides detail result in the terms of segmentation performance evaluation because it is calculated of each corridor with various ground flash density. Therefore, this calculation become important as a reference in high voltage over head line design and also in the transmission lines performance calculation of Transmission and Load Dispatch Centre of Sumatra for maintenance purpose.

Published in:

Electrical Engineering and Informatics (ICEEI), 2011 International Conference on

Date of Conference:

17-19 July 2011