Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Ulinnuha, Muhamad Munif
Dini, Hasna Satya
Subject
Teknik Elektro
Datestamp
2023-06-19 06:28:35
Abstract :
In the process of distributing electrical energy to users, a metering and limiting device
(APP) is required for the measurement of energy transactions. However, due to the age
factor, the quality of kWh and current measurements has decreased in accuracy. To find
out the error value on kWh meters and CTs requires special test equipment called emsyst.
Metode of repair faulty kWh meters and CTs, it is necessary to replace them with new
kWh meters and CTs. Unlike the availability of kWh meters, the replacement of new CTs
uses the Shuntrip full replacement method, but due to the efficiency of the APP
maintenance budget, there is a shortage of integrated APP/Shuntrip equipment supply.
Therefore, it is necessary to find a CT repair method that is more efficient in terms of
repair time, lower cost and minimizes Energy Not Served and CT error assessment results
below the accuracy class limit. The CT replacement method provides a repair time of 40
minutes or 66.67% faster, saves work costs of Rp. 12,069,525.06 or 91.93% and
minimizes ENS by 392.94 kWh or 66.5% than the full replacement of Shuntrip. The CT
error assessment results before and after CT replacement are as good as the full Shuntrip
replacement. The increase in accuracy on CT replacement on January 11-19, 2023
amounted to 523 kWh/day or 24.33%. There is a potential loss received by PT PLN
(Persero) due to delays in repairing CT errors IDR 3,668,470.64 / month