A UNIFIED APPROACH TO OPTIMAL POWER FLOW SOLUTIONS USING GRG

ABSTRACT

This paper presents a new formulation of the optimal power flow problem suggesting a single objective function for real and reactive power dispatch. This objective function is nothing but the sum of the cost of active generation and system losses satisfying the network constraints. The objective function and constraints are expressed in terms of real and imaginary parts of bus voltages and line parameters. The generalized reduced gradient technique has been used to solve this problem. Effectiveness of this formulation is demonstrated by taking examples of actual networks.