Minimizing the Losses and the Cost of a Radial Network using Firefly algorithm: a real case study Diesel-PV-Batteries Hybrid system of Tomia Island, Southeast Sulawesi, Indonesia

In this paper we will decrease the operation and maintenance cost by considering getting the maximum output power from the photovoltaic (PV) farms. Besides making Power Flow analysis using Backward-Forward method and decreasing the losses in a real case study located in Tomia island, Wakatobi Regency, south-east Sulawesi, Indonesia. This system consists of diesel generator, battery and four photovoltaic farms located in different areas and all of them connected to a standalone 20kV radial network. We will use Liu and Jordan statistical method to calculate the hourly solar radiation besides using Firefly algorithm as our optimization method using Matlab software.