Evaluation of Short Circuit Fault Current in Selayar Island Power System after Connecting to Photovoltaic

Abstract

Electric power producers choose renewable energy as distributed generation to increase the supply of electrical power to the load is a good alternative choice. The reason is that the power losses during the power delivery process are getting smaller. Cases like this occur in the Selayar Island electric power system. Selayar Island has 11 diesel generators on its electric power system. Furthermore, the electric power system is integrated with photovoltaic which has a capacity of 1.3 MWpeak. It should be noted that the addition of new power plants in the power system can increase the level of short-circuit fault currents. This phenomenon is a new problem for the electric power system. The purpose of this paper is to evaluate changes in short-circuit fault currents in the Selayar Island electric power system. It is necessary to make several conditions to evaluate the fault current. The first condition is to evaluate the short-circuit fault current of the Selayar Island electric power system before it is integrated with photovoltaic. The second condition, evaluation of the short-circuit fault current in the electric power system after it is integrated with photovoltaic. The third condition is to reduce short-circuit fault currents in electric power systems that have been integrated with photovoltaic using Fault Current Limiting (FCL) and then evaluate the results of the fault currents. The result is that the short-circuit fault current in condition 2 is higher than in condition 1. The greater the power generation capacity, the greater the contribution of the short-circuit fault current generated. In condition 3, FCL is able to reduce the short-circuit fault current in the Selayar Island electric power system after it is integrated with photovoltaic.