Optimal Placement and Sizing of DG for Loss Reduction,Voltage Profile Improvement and Voltage Sag Mitigation

Abstract

Increasing trend in using distributed

generation has motivated power sector planners to

consider approaches that result in benefiting the most

from investments in this field. Meanwhile subjects such

as power loss reduction, voltage profile improvement and

voltage sag mitigation has significant role in lessoning

imposed expenditures to utility companies. Loss

reduction is important for utility companies as it directly

increases company benefit in a competitive electricity

market, beside reaching power quality standards is too

important as it has vital effect on customer orientation. In

this paper an optimization algorithm is developed to gain

these goals all together. In order to evaluate sag

mitigation capability of the proposed algorithm, voltage

in voltage sensitive buses is investigated. An existing

20KV network has been chosen as test network. Results

show the efficiency of the proposed algorithm in

reducing power loss, improving voltage profile and

mitigating voltage sags in voltage sensitive buses.