Analisis Kualitas Isolasi Interbus Transformer (IBT) 1 500/150 KV 500 MVA Dengan Metode Uji Tan Delta Pada GIS Kembangan.
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Tantra, Aditya Pratama Vamca
Koerniawan, Tony
Koerniawan, Tony
Subject
Teknik Elektro
Datestamp
2022-10-03 04:23:00
Abstract :
Interbus Transformer is a transformer that has a central role as a link between extra high voltage busbars to high voltage busbars in electric power transmission systems. To maintain the continuity of operation of the Interbus Transformer, maintenance must be carried out every 2 Years. One of these maintenances was the testing of isolation prisoners on the transformer by the Tan Delta method. The standard used for testing this delta tan is CIGRE TB 445, where the maximum allowable delta tan value for the new transformer is 0.5%. In addition, the authors also calculated the value of Resistive Current, Capacitive Current, and Total Leak current passing through the transformer isolation to obtain a test fasor diagram, as well as calculating relative errors whether there were errors in both the measuring instrument and the working procedure. From the data obtained, it can be known that all the results of tan delta from the capacitance of the transformer isolation is still in good condition. In addition, for all the insulation of the transformer obtained capacitive current values that are close to the total current of the leaking current, resulting in a deviation of the delta angle that is not too large so that it is still in good condition. In addition, a relative error value of 7.14% of CHL-CHG isolation was obtained due to an error in testing.
Interbus Transformer is a transformer that has a central role as a link between extra high voltage busbars to high voltage busbars in electric power transmission systems. To maintain the continuity of operation of the Interbus Transformer, maintenance must be carried out every 2 Years. One of these maintenances was the testing of isolation prisoners on the transformer by the Tan Delta method. The standard used for testing this delta tan is CIGRE TB 445, where the maximum allowable delta tan value for the new transformer is 0.5%. In addition, the authors also calculated the value of Resistive Current, Capacitive Current, and Total Leak current passing through the transformer isolation to obtain a test fasor diagram, as well as calculating relative errors whether there were errors in both the measuring instrument and the working procedure. From the data obtained, it can be known that all the results of tan delta from the capacitance of the transformer isolation is still in good condition. In addition, for all the insulation of the transformer obtained capacitive current values that are close to the total current of the leaking current, resulting in a deviation of the delta angle that is not too large so that it is still in good condition. In addition, a relative error value of 7.14% of CHL-CHG isolation was obtained due to an error in testing.
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