Application of soft computing technique in power system to improve power system performance

Total transfer capabilities analysis of power system is currently a critical issue in both, planning & operating because of increase area interchanges among utilities. To reduce the flows in heavily loaded lines, Flexible AC Transmission System (FACTS) devices is used, this results in increased transfer capability, improve stability of the network, low system loss, and fulfill contractual required by controlling the power flows in the network. To achieve this FACTS device should place optimally and this can be done with the help of real power flow performance index sensitivity indices analysis method and reduction of total system reactive power loss sensitivity indices analysis method. Static VAR Compensator (SVC) is used here as a FACTS device. To decide priority of line for placing SVC, soft computing technique “Fuzzy logic method” is used. To write a programming code for finding out the sensitivity indices, software `MATLAB' is used. Electrical IEEE-14 bus system is used for study purpose.