ANALISIS JARAK LIGHTNING ARRESTER SEBAGAI PENGAMAN
TRANSFORMATOR DAYA UNIT II 60 MVA 150/20 KV
DI GARDU INDUK ANCOL
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Sari, Wahyu Chyntia Permata
Ispranyoto, Edy
Ispranyoto, Edy
Subject
Teknik Elektro
Datestamp
2023-07-29 01:42:50
Abstract :
As one of electrical power transmission sub systems from power plant to consumers, substation has an important role which is to elevate voltage from power plant and then proceed to drop voltage from transmission line to the consumers. Ancol substation, a connecting substation inter-substations within the area has reliability value that must be maintained so that faults likely causing electrical outage on the consumers do not occur. Transformer on a conventional substation is installed on the Switchyard, therefore it is susceptible to lightning strike. To protect transformer against lightning surge, lightning arrester is used. Installation of lightning arrester on the substation transformer has to regards several matters, among which are BIL (Basic Insulation Level) from transformer and arrester placement distance itself. According to SPLN 7:1978 the maximum distance between lightning arrester and power transformer for arrester with 150 kV rated voltage is less than 80m. While according to the calculation and the condition in switchyard,the distance betweeen arrester and power transformer are 45m and 3m. Corresponding with protection standards, so the power transformer protection against lightning surge fault is exceptional
As one of electrical power transmission sub systems from power plant to consumers, substation has an important role which is to elevate voltage from power plant and then proceed to drop voltage from transmission line to the consumers. Ancol substation, a connecting substation inter-substations within the area has reliability value that must be maintained so that faults likely causing electrical outage on the consumers do not occur. Transformer on a conventional substation is installed on the Switchyard, therefore it is susceptible to lightning strike. To protect transformer against lightning surge, lightning arrester is used. Installation of lightning arrester on the substation transformer has to regards several matters, among which are BIL (Basic Insulation Level) from transformer and arrester placement distance itself. According to SPLN 7:1978 the maximum distance between lightning arrester and power transformer for arrester with 150 kV rated voltage is less than 80m. While according to the calculation and the condition in switchyard,the distance betweeen arrester and power transformer are 45m and 3m. Corresponding with protection standards, so the power transformer protection against lightning surge fault is exceptional
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