KAJIAN ANALISIS RELE DIFFERENSIAL PADA TRANSFORMATOR UNIT 1 60 MVA GARDU INDUK 150 KV PURBALINGGA SETELAH PENAMBAHAN BAY BARU RAWALO 1 DAN RAWALO 2
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Salsabilla, Bagas Helmi Putra
Hariyanto, Agung
Hariyanto, Agung
Subject
Teknik Elektro
Datestamp
2022-09-29 07:17:18
Abstract :
Protection is a form of protection for existing electrical equipment in order to avoid equipment damage and also to maintain the stability of the distribution of electricity. One of the devices for transformers is the differential relay. Differential relays are used as primary protection and cannot be used as backup protection. This relay compares the incoming and outgoing currents. Differential relays are also used as the main safety of transformers that work without coordination with other relays. The power transformer in the transmission system is the main component, therefore it must be protected from disturbances that cause its reliability to decrease. This study aims to analyze the differential relay settings on the 60 MVA transformer in the 150/20 kV Purbalingga Substation. The research was conducted at the Purbalingga Substation and looked for journal references related to differential relay settings. The calculated components are the nominal current value, differential current, setting current and mismatch error obtained from the calculation results. The adjustment current obtained from the calculation results is 0.2587 and it is hoped that with this relay adjustment the protection system can work optimally.
Protection is a form of protection for existing electrical equipment in order to avoid equipment damage and also to maintain the stability of the distribution of electricity. One of the devices for transformers is the differential relay. Differential relays are used as primary protection and cannot be used as backup protection. This relay compares the incoming and outgoing currents. Differential relays are also used as the main safety of transformers that work without coordination with other relays. The power transformer in the transmission system is the main component, therefore it must be protected from disturbances that cause its reliability to decrease. This study aims to analyze the differential relay settings on the 60 MVA transformer in the 150/20 kV Purbalingga Substation. The research was conducted at the Purbalingga Substation and looked for journal references related to differential relay settings. The calculated components are the nominal current value, differential current, setting current and mismatch error obtained from the calculation results. The adjustment current obtained from the calculation results is 0.2587 and it is hoped that with this relay adjustment the protection system can work optimally.
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