Optimal placement and sizing of distributed generation(DG) to improve voltage profile and reducing power system losses by using BFO algorithm

The voltage instability phenomena may occur in distribution networks. The decline of voltage stability level will restrict the increase of load served by distribution companies. Distributed Generation (DG) is increasingly drawing great attention of people. The development of DGs will bring new chances to traditional power systems. DGs connected to distribution networks are potential to improve the system voltage stability. To ensure the quality of power supply in distribution systems, bus voltages should be maintained within limits. Optimization techniques are tools which can be used to locate and size the DG units in the system, so as to utilize these units optimally within certain limits and constraints. In this paper we compared the results of power loss of 33,41 and 69- bus radial distributed systems using algorithms both MINLP and BFO. The proposed method starts by selecting candidate buses into which to install the DG units on the system.