PEMILIHAN RELAY PENGAMAN DI DALAM SISTEM DISTRIBUSI TENAGA LISTRIK MENGGUNAKAN KRITERIA MAJEMUK

Abstract

Protective relays play an important role in a electrical power distribution system, therefore protective relays used in such a system should be those which is the best ones. On the other hand, research on protective relays are not extensively undertaken. These two contradictory facts lead to the need of certain research on protective relay selection which is based on multiple criteria of selection. As a framework, this research applied an AHP method combined with fuzzy approach. Extent analysis approach was then used to derive priorities of various criteria, sub-criteria, and alternatives included in the research. At the end of the research, it could be inferred that in terms of four working area under APJ Surakarta management, digital relays were considered the best for GI feeder in the location under survey. It was also concluded that, in spite of their distance which are far to each other, the priority vectors of criteria, sub-criteria, and alternatives for each working area have no significant differences.