A Novel Strategic Approcah for Dg Location Considering Security Issues

Sankara Venkata Sudeep, Mrs. V. Sarayu

In this paper, a novel strategic approach is proposed to locate distributed generation (DG) in the primary distribution network under (N-1) line outage security criterion. The static voltage stability margin (VSM) using continuation power flow (CPF) is determined for each line outage condition and based on corresponding reduced VSM is considered as a criterion for line outage ranking. The critical bus is selected for DG location under worst line contingency condition. Using repeated power flow (RPF) approach, the DG value is increased up to network becomes normal state. At this stage, the TVAC-PSO algorithm is implemented to optimize system voltage profile and so loss minimization. The proposed approach is tested on standard IEEE test systems and is found to be very effective in identifying the suitable location and size of DG for voltage stability margin enhancement.