Optimal Placement and sizing of Multiple DGs for Loss Minimization and Voltage Stability Enhancement using Golden Eagle Optimization Technique

Abstract

The modern power distribution systems face many challenges due to the increasing electricity demand, urbanization, industrial growth and the incorporating renewable energy sources like wind and solar power. The traditional radial distribution systems suffer from problems like high power losses, poor voltage profile, feeder overloading and reduced voltage stability especially under heavy loading conditions. In order to solve the above problems, Distributed Generation (DG) units are connected near the load centers for good system performance. This project is focused on optimal placement and sizing of DG units in IEEE 33 Bus and IEEE 69 Bus radial distribution systems. Initially the load flow analysis is performed using the Backward-Forward Sweep (BFS) technique to find the bus voltages, branch currents and real power losses for base case conditions. Detection of weak buses is based on voltage deviation and system performance indices. Then, the Golden Eagle Optimization (GEO) algorithm is implemented to determine the optimal locations and capacities of DG units to minimize the power loss and to improve the voltage profile. The simulation is performed in MATLAB and the result is compared before and after DG integration. The achieved results indicate significant reduction in power losses and improvement in voltage stability upon optimal placement of DG.