Pengaruh Penambahan Superconductor Fault Current Limiter (SFCL) Resistif terhadap Kedip Tegangan Akibat Gangguan Hubung Singkat pada Sistem Distribusi Terhubung Distributed Generation (DG)

Abstract

With the increasing activity of using electrical energy, the distribution network is becoming increasingly widespread. This causes changes in the electric power system so that the problem of interference with the distribution system when delivering electricity to consumers also increases. One of the power quality problems caused by short circuit disturbances is voltage sag. To mitigate voltage sags on power system lines, a Superconductor Fault Current Limiter (SFCL) can be used. This research aims to look at the effect of resistive superconducting fault current limiter (SFCL) on distribution networks connected to distributed generation (DG) in mitigating voltage sags. The SFCL simulation will be carried out on the TR 06 feeder where the system is connected to the Parmonangan PLTMH. In this thesis, a simulation of voltage dips that occur due to one-phase to ground and threephase short circuit faults will be carried out using Simulink Matlab R2021a. By comparing the simulation modeling results when connected to distributed generation (DG) before and after SFCL installation, it is obtained that the highest percentage of voltage sag improvement due to single phase to ground short circuit fault by SFCL is 4,96% from 18.201 V to 19.103 V and for three-phase faults, the highest percentage of voltage sag improvement by SFCL was 549,09% from 2.960 V to 19.213 V. The highest percentage of decrease in single-phase to ground short circuit fault current by SFCL was 45,61% from 270,59 A to 147,16 A and the percentage for three-phase faults is 84,32% from 1425,13 A to 223,32 A.