ANALISIS KONDISI CURRENT TRANSFORMER BERDASARKAN KARAKTERISTIK DARI HASIL UJI RASIO DAN EKSITASI PADA PELANGGAN 20 KV DI PT. PLN (PERSERO) UP3 KEBON JERUK
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Mutiara Cintanami, Adinda
Damiri, Dhami Johar
Damiri, Dhami Johar
Subject
Teknik Elektro
Datestamp
2022-11-07 03:36:49
Abstract :
In measuring electrical energy consumption at 20 kV customers at PT. PLN UP3 Kebon Jeruk in the last 5 years there have been findings on Current Transformers (CT) that do not work according to the standard used, namely IEC 60044-1. The current transformer no longer meets the standard when there are deviations and error values that occur during measurements which are caused by ratio errors and saturation in the CT. To be able to find out that CT works according to the standards used, it is necessary to test on CT using a CTAnalyzer. This research was conducted using quantitative methods with a comparative quantitative approach. In this study, CT tests were carried out before operation and during operation for approximately 3 years with a class 0.2s current transformer with a ratio of 40/5 A using a CT-Analyzer on the value of excitation characteristics and ratios. The results for testing the ratio on current transformers with operation for approximately 3 years have error values ranging from 0.07% to 0.09%, while for the saturation value of the current transformer core in each phase of Vk (5.328) and for the value of Vs ( 4.0313), in the S phase the value of Vk (5.219) and for the value of Vs (3.7533) and in the T phase the value of Vk (5.254) and for the value of Vs (3.4851), where the resulting value still meets the standard.
In measuring electrical energy consumption at 20 kV customers at PT. PLN UP3 Kebon Jeruk in the last 5 years there have been findings on Current Transformers (CT) that do not work according to the standard used, namely IEC 60044-1. The current transformer no longer meets the standard when there are deviations and error values that occur during measurements which are caused by ratio errors and saturation in the CT. To be able to find out that CT works according to the standards used, it is necessary to test on CT using a CTAnalyzer. This research was conducted using quantitative methods with a comparative quantitative approach. In this study, CT tests were carried out before operation and during operation for approximately 3 years with a class 0.2s current transformer with a ratio of 40/5 A using a CT-Analyzer on the value of excitation characteristics and ratios. The results for testing the ratio on current transformers with operation for approximately 3 years have error values ranging from 0.07% to 0.09%, while for the saturation value of the current transformer core in each phase of Vk (5.328) and for the value of Vs ( 4.0313), in the S phase the value of Vk (5.219) and for the value of Vs (3.7533) and in the T phase the value of Vk (5.254) and for the value of Vs (3.4851), where the resulting value still meets the standard.
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