EVALUASI PERLINDUNGAN GARDU INDUK 150 KV PANDEAN LAMPER DI TRAFO III 60 MVA TERHADAP GANGGUAN SURJA PETIR
ABSTRACT: One of the main
causes of damage to existing equipment in the substation was struck bylightning
attack that cause the conductor wave and make over voltage and flames leap peak
voltage exceeds BIL. The aim of this study was to calculate and analyze the
level of protection, against power transformer arrester, the safe distance
between arrester and transformer power to get a good protection against harmful
lightning surges, comparing both arresters installed. To solve the problems of
interference caused by lightning surge lightning arrester is installed as close
as possible to put on the transformer clamps to protect electrical equipment.
The results of calculations for a distance of 6 m, 4 MBA type 2 arrester
capable of with standing the wavefront steepness of 500 kV / μs, while type
exlim P 700 kV / μs. The greater the arrester capable of withstanding surge
wavefront tilting the better the equipment in substations are protected. The
evaluation shows that the distance between arrester and transformer installed
in the 150 kV substation Pandean Lamper less than the maximum to protect
electrical equipment, especially power transformers.
Penulis: Ihwan Ernanto Wibowo,
Luqman Assaffat, M. Toni Prasetyo
Kode Jurnal: jptlisetrodd120129
