A New Approch for Predicting Voltage Response Trajectory in Optimal Coordinated Voltage Control

In this paper we deal with the optimal coordinated voltage control issue. A common control procedure for this problem is the model predictive control. A major step toward model predictive control in coordinated voltage control issue is the prediction of voltage response trajectory. This paper presents a new technique to predict the trajectory of voltage response based on two points. These two points are as follow: 1- The moment immediately after applying control actions 2- The steady state of the system after applying these actions. The new method is based on this principle that in coordinated voltage control the direction of voltage response alterations based on control measures is monotonic. The control method utilized in this paper is adaptive and flexible. The adaptive feature refers to controllability of system with a change at the operating point. By flexibility feature, we mean solving an optimization problem with a multiobjective SPEA2 optimization algorithm and providing a set of nondominated solutions which enable system operator to determine and apply the best control actions based on economic and operational conditions aided by a multiple criteria decision-making technique based on a priority matrix.