Analisa Tahanan Isolasi Pada Transformator Tenaga Di Gardu Induk Wonogiri

Anindyantoro, Muhammad Syahendra and , Umar, ST. MT (2018) Analisa Tahanan Isolasi Pada Transformator Tenaga Di Gardu Induk Wonogiri. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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This research is in PT. PLN (Persero) Substation Wonogiri. The main apparatus itself has a power transformer as a voltage reducer used to distribute the voltage from a 150 kV voltage lowered to 20 kV to be distributed to the distribution or to the consumer. This time opportunity will discuss about the isolation resistance on the transformer. Insulation resistance is used to isolate the transformer so that the transformer does not occur heat that can damage the transformer itself. The method used to calculate the polarization index to determine whether the transformer is still good or ugly, if it is bad then there should be a handler can test the oil and tangent delta. calculates the delta destination tangent for measuring the capacitive leakage current in the transformer, and the last one is to test the oil done to find the oil still feasible to use. The calculation results of polarization index values obtained more than 1.1-1.25 good state, and if the value below 1.1-1.25 then the transformer needs a handler. The delta tangent calculation calculates tan delta to know if the delta tangent is still good, if the value of tan delta is above 0.5% then tan delta is ugly and needs to be checked, if the value is 0.5% down then tan delta is good. The last test of oil is only checked the state of oil at temperature of 30 ̊ C for transformer and temperature 38 ̊ C for OLTC.

Item Type: Karya ilmiah (Skripsi)
Uncontrolled Keywords: insulation resistance, transformer polarization index, tangent delta transformer, power transformer.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Fakultas Teknik > Teknik Elektro
Date Deposited: 01 Feb 2018 02:35
Last Modified: 01 Feb 2018 02:35

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