Analisis Susut Daya Listrik pada Penyulang 20 kV Gardu Induk Wonogiri

The distribution of electrical power from the generator to the consumer is a loss of electrical power. The lack of power will always be there, because the equipment used does not have a 100% efficiency level, the content of the prisoner in the conductor is permanent and the nature of the network. Rotating blackouts are done to avoid total blackout. This causes the power delivered to customers to be smaller. Development and development in the Wonogiri region is increasing in line with the modern lifestyle of society resulting in increased electricity demand. The analysis carried out in the Wonogiri substation on the medium 20 kV network contained in the city repeater (WNI 3) to determine the value of the shrinkage of power on the feeder. The research method used with reference collection, then data pengmbilan on 20 kV transformer found on Wonogiri main substation at peak load that is at 10.00 noon and at 19.00 night. Medium volumes of 20 kv wonogiri on city buffer using AAAC 240 mm2 carrier. The results of calculations performed on the city repeater experienced a peak afternoon load of 131.5 A and night peak load of 263 A. With the known day and night peak, the resulting loss of power at the peak afternoon is 55.295583 kw with the percentage value of 1.3% while at night peak load of 221.82 kw with a percentage of 2.7%. From these results, the city feeder transformer (WNI 3) is still good and still suitable for use