[01] Efrita Arfah Zuliari, Electrical Engineering Department, Institut Teknologi Adhi Tama, Surabaya, Indonesia. [02] Tri Mulyono, Electrical Engineering Department, Institut Teknologi Adhi Tama, Surabaya, Indonesia.

In order to meet the needs of electric power in Madura 162.8 MW, it need an electrical power in the region Madura 162.8 MW hence the need for electric power is supplied from the plant - UJUNG (Indonesia Power) and also from GE Kenjeran of 115 MW and 63.8 MW. Therefore, the method used to analyze the amount of losses is by Gauss Seidel wherein the method is used to solve linear equations. Analysis of the results of the calculation, the value obtained by Gauss Seidel with total active power and reactive power on each bus to Madura is 162.8 MW 38.875 MVA. The value of losses in the transmission network of 4.796 MW and the total value for the voltage drop Madura 2.897%. As for the value voltage drop below the maximum value of ± 5%, or below the value of tolerance.

Gauss-Seidel, Voltage Drop, Power Loss, Active and Reactive Powers

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