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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Novri Andrean
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Engineering

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Analisis Keberadaan Sistem I-GSW Untuk Perlindungan Menara Transmisi 150 KV Terhadap Sambaran Petir Langsung Novri Andrean; Edy Ervianto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The ground wire serves as a protective phase wire from lightning strikes, problems arise when lightning strikes the ground wire. There for the lightning current flows in the ground wire, thus a voltage increase occurs in the tower. The technology that has been developed by ITB and PT. PLN Persero is the I-GSW system functions to protect the transmission tower from lightning currents flowing into the construction of the tower due to lightning strikes directly on the ground wire. In this research the ATP-EMTP software was used as an observation and analysis tool for voltage rises in the tower during a lightning strike immediately before and after the installation of the I-GSW system. The higher the earth grounding resistance value and the higher the lightning current striking so that the I-GSW system the stronger to protect the transmission tower from the increase in voltage The greater the injection of lightning strikes the tower voltage will be greater so that the I-GSW system will protect the tower with a large so that the tower voltage increase using the I-GSW system will not be large because it has been protected by the I-GSW system. The closer the distance of the flash point location on the tower, the higher the tower voltage increase and vice versa the farther the location of the flash point on the tower, the smaller the voltage increase on the tower.Keywords: ATP-EMTP, I-GSW System, Ground Wire, Lightning Current, Ground Type Resistivity
Analisis Korelasi Kawat Tanah Dengan Tahanan Pentanahan Terhadap Back Flashover Novri Andrean; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Indonesian is a tropical climate in general, including areas with highlightning days each year. A prominent mountain or tower in the middle of a free area of rice fields, fields, gardens, etc. it has the possibility of a higher radiation than places in the middle of the city surrounded by other tall buildings. The need for electricity is very important. So it needs a reliable system of electric power, service, and continuity of maximum 150 kV High Voltage Air Channels electricity distribution is part of the electric power transmission system. This channel is quite often a direct lightning strike disruption which can result in Back Flashover in the channel. To minimize this disturbance used the Independent Ground Wire System (IGWS) system installed along the 150 kV Transmission Line. Then to determine the correlation of ground wire with the value of tower ground resistance against back flashover due to direct lightning strikes using ATP-EMTP Software. The Simulation results show that the relationship of ground wire with tower ground resistance value is the greater than lightning impulse current and the tower grounding value. The peak voltage on the tower and phase wire increase.The phase voltage of the phase wire which is exposed to the back flashover on the 70 kA lightning impulse with the phase wire voltage of 1.66 MVolt.Keywords: ATP-EMTP, Back Flashover, Ground Wire, Tower grounding value.
Co-Authors Edy Ervianto Fri Murdiya, Fri