A novel technique and new stability indicator implemented to reduce the power losses with optimal placement of DG source and conductor strength in radial distribution system [articol]

Abstract

In this paper, an efficient BAT optimization algorithm (BA) is proposed for distribution system using automatic sectionalizing switching operation in the large scale distribution systems. A novel “Distributed power flow analysis” has been derived for finding the electrical quantities using the branch exchange method by a forward backward sweep algorithm and to improve the voltage stability. Network reconfiguration attempts to determine a better solution in the manner of a greatest-descent algorithm, but it cannot give any guarantee for the convergence property. Numerical examples demonstrated through IEEE 33 bus and IEEE 69 bus system. The validity and effectiveness of the proposed methodology have been tested in TNEB 33 KV, 62 bus real time distribution systems. The test results are minimizing the real power losses, minimizing the deviation of node voltages, minimizing the branch currents, minimizing the switching operations and included Distribution generations reveal that the proposed method yields optimal reconfiguration and optimal conductor strength with reduced computational burden. The result of the proposed method provides a powerful optimization solution. The algorithm is to avoid escape from local minima by accepting improvements in cost, but the use of this algorithm is also responsible for an excessive computation time.