STUDI DAN PEMODELAN FENOMENA BACKFLASHOVER SALURAN TRANSMISI 150 KV DENGAN SISTEM PENTANAHAN TERKONSENTRASI

SITORUS, SERENAOMI and Jambak, Muhammad Irfan (2020) STUDI DAN PEMODELAN FENOMENA BACKFLASHOVER SALURAN TRANSMISI 150 KV DENGAN SISTEM PENTANAHAN TERKONSENTRASI. Undergraduate thesis, Sriwijaya University.

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Abstract

The probability of a direct lightning strike on the structure, is relatively high for tropical regions such as Indonesia. This allows lightning strike on the transmission line, causing an overvoltage which causes a backflashover (BFO). Therefore, it is necessary to consider the lightning performance of the transmission line. This study observes the backflashover phenomenon with concentrated grounding systems to analyze the impact of grounding resistance, soil resitivity, impulse resistance, and the minimum lightning peak current that causes backflashover on the insulator string, and determine the estimated number of strokes on the transmission line (BFOR) for lightning performance. By using ATP-EMTP simulation, it was found that the higher ground resistance will result in a minimum backflashover current, will be smaller. And at T382 with R0 = 8.5 Ω which is the closest tower to the substation, the minimum backflashover current for phase-A is 41.3 kA, phase-B is 31.6 kA, and phase-C is 29.0 kA with IEC standard impulse. For BFOR phase-A approximately 0.364 strokes/100 km/year, for phaseB approximately 0.572 strokes/100 km/year and for phase-C is 0.629 strokes/100 km/year. So by modeling using ATP-EMTP, can estimate the lightning performance of a transmission line through the backflashover rate obtained.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Backflashover, ATP-EMTP, Sistem Pentanahan Terkonsentrasi, BFOR.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1-9971 Electrical engineering. Electronics. Nuclear engineering > TK1 Electrical engineering--Periodicals. Automatic control--Periodicals. Computer science--Periodicals. Information technology--Periodicals. Automatic control. Computer science. Electrical engineering. Information technology. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3001-3521 Distribution or transmission of electric power
Divisions:	03-Faculty of Engineering > 20201-Electrical Engineering (S1)
Depositing User:	Users 7760 not found.
Date Deposited:	02 Sep 2020 01:49
Last Modified:	02 Sep 2020 01:49
URI:	http://repository.unsri.ac.id/id/eprint/34308

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