OPTIMAL PLACEMENT AND SIZING OF HT SHUNT CAPACITORS FOR TRANSMISSION LOSS MINIMIZATION AND VOLTAGE PROFILE IMPROVEMENT: THE CASE OF RRVPNL POWER GRID IJEET © I A E M E

Abstract

ABSTRACT The loss minimization and voltage stability enhancement are the important objectives in operating the transmission networks. In this paper, a method to evaluate the optimal placement and restructuring of HT Shunt Capacitors in RRVPNL Power Grid for minimization of transmission system losses and voltage profile improvement based on cost benefit analysis and PR index is proposed. The costs considered are economic cost associated with HT Shunt Capacitors. The PR index is the index of losses decrement which in the proposed algorithm is the ratio of total losses in the system after capacitor placement to all of losses before capacitor placement. The benefits from reactive power compensation are defined as the reduced generation costs due to reduced losses and reduced total system costs. The benefits are also achieved from the fact that power generation schedules can be changed by increased transmission capability in the network which will allow for more generation from cheap sources to be delivered to the load centers and more energy can be sold to the customers which would increase the sales due to higher transmission capacity. The benefits are considered in terms of cost for economic justification of investments in installation and restructuring of reactive power sources. The method is based on power flow solution iteratively using MATLAB to arrive at the optimal solution