Cost effective Distributed Generation Placement and sizing using Water Flow-like Algorithm

摘要

Distributed Generation (DG) is been a very interesting concept in recent years for its inheritance benefits when integrated to grid. It can reduce real losses, voltage deviation and congestion merely when proper location and sizes of DG were provided. But such connection of DG should also have maximum cost saving over the time. For optimal locations, real loss index, voltage index were calculated and given as inputs to Fuzzy inference system which will take decision based on the rule base framed, to give DG Placement index (DGPI) as output. Maximum values of DGPI pose optimal location to DG placement. In this paper an objective function representing Cost of Maximum Saving is formulated which is maximized by optimizing the size of DG using a novice algorithm i.e. Water Flow-like Algorithm (WFA). This algorithm is based on the flowing behaviour of water from higher altitude to lower level and is governed by parameter like gravitational force, momentum of water etc. The proposed method is tested on IEEE 33 bus system and IEEE 69 bus systems, and the result obtained were presented.