Multi‐Agent based Approach for Intelligent Control of Reactive Power Injection in Transmission Systems

This chapter considers loss minimization as the objective function and maintaining voltage profile within safe limits as the constraint. It proposes an optimization approach in which the objective function is augmented to incorporate global optimization of a linearized large scale multi‐agent power system using the Lagrangian decomposition algorithm. The aim is to maintain centralized coordination among agents via a master agent, leaving loss minimization as the only distributed optimization, which is analysed while protecting the local sensitive data. The chapter introduces a distributed algorithm based multi‐agent system in order to achieve a global optimum of the whole system by separately solving local sub‐problems. The operator of the power system is responsible for controlling the transmission system voltage, which means having enough reactive power available to handle voltage violation conditions. In normal conditions, the reactive power of the system not only dictates the voltage profile but also leads to losses.