ANALISA GANGGUAN PETIR TERHADAP KINERJA ARRESTER SEBAGAI PENGAMAN TRANSFORMATOR DI PT. PLN DISTRIBUSI LUMAJANG

The distribution network is a final stage channel that delivers electricity from the transmission network to the load, an Arrester is needed as a safety device for installation from overvoltage disturbances due to lightning (Lightning Surge. In this discussion I will calculate the value of the arrester rating factor of used is in accordance with the provisions or not, I will also add modeling simulink to find out the value of current and voltage when the arrester is hit by a lightning strike From the simulation results using the MOV arrester matlab application can also work properly, the proof is that the arrester can ward off interference caused by lightning strikes by removing excess voltage into the shunt reactor so that the voltage entering the transformer remains The arrester simulation gets the voltage and current values, namely the voltage before being disturbed by 1.4x104 kV and the value after being disturbed is 1.9x105 kV. And the value of the current before being disturbed is 0 kA (because the arrester is an insulator) after being given a disturbance. large 70 kA (because the arrester is a conductor)