@thesis{thesis, author={Hutadjulu Albert Gifson and Pardamean Tambunan Ananda Nicolas}, title ={SINKRONISASI TRANSFORMATOR GARDU DISTRIBUSI DENGAN MENGGUNAKAN UNIT GARDU BERGERAK METODE PEMELIHARAAN TANPA PADAM TERHADAP SISTEM KEANDALAN JARINGAN DI PT PLN PERSERO AREA UP3 MENTENG}, year={2022}, url={http://156.67.221.169/5104/}, abstract={In line with the time there is an increase in the need for electricity use, therefore the use of electricity capacity must be in accordance with the right distribution system so that the distribution of electrical energy can be channeled properly and correctly The conditions that must be met in synchronization are that the transformer grub vector must be the same along with its power, then ensure the phase rotation is clockwise so that it can be ensured that the relationship between the phases is appropriate, then ensure the tolerance of the feeder voltage with a tolerance limit of approximately 1 kV from 20 kV, namely the lower limit 19 kV and the upper limit is 21 kV, then for the frequency the tolerance limit is approximately 0.2 Hz from 50 Hz, namely the lower limit of 49.8 Hz and the upper limit of 50.2 Hz, and the measurement results on the panel box before and after synchronization do not exceed the limit. the tolerance value is 10% for the maximum voltage and 5% for the minimum voltage so that it can be concluded that the synchronization process is running according to its operating standards. The value of the optimistic feeder voltage at 10.00 is 20.29, the relative error is at least 1.42% and the maximum relative error is 1.45%, then at 11.00 is 20.29, the relative error is at least 1.42% and the relative error is maximum 1 0.45%, then at 12.00 which is 20.32, the relative error is at least 1.57% and the maximum relative error is 1.6%. Then for the frequency tolerance of the optimistic feeder, namely at 10.00, which is 49.98 Hz, the relative error is at least 0.04% and the maximum relative error is 0.04%, then at 11.00 is 50.00 Hz, the relative error is at least 0% and the relative error is a maximum of 0%, then at 12.00 i.e. 49.99 Hz, a minimum relative error of 0.2% and a maximum relative error of 0.2%. For the relative error value at 11.00, it was obtained 0% because the frequency was appropriate or 50 Hz. Then for the results of the calculation of the resistance of the NYY and NA2XSEKBY cables, it is in accordance with the PUIL 2000 standard, namely 1 Kilo Volt equals 1 Kilo Ohm so that the insulation resistance of the cable used during synchronization is in accordance with the standard and for the measurement results on the panel box before and after synchronization are not exceeds the tolerance value, which is 10% for the maximum voltage and 5% for the minimum voltage so that it can be concluded that the synchronization process is running according to its operating standards.} }