Strategic management of stochastic power losses in smart transmission grids

This paper contributes to the development of a smart wide-area controller for the management of stochastic power losses in smart transmission grids while power system reliability is met. A comprehensive strategic management model is used for designing a smart grid management strategy. The proposed wide-area control algorithm enables continuous communication and control, allowing suppliers to optimize active power losses based on price preference and system technical issues. Wide-area control variables are continuously controlled by solving an optimization problem with an active intent to minimize power losses. A gravitational search algorithm (GSA) is presented to solve the optimization problem. In this paper, the wide-area control system is combined with local controllers and a hybrid controller is proposed. Proposed algorithms are tested on the standard Institute of Electrical and Electronics Engineers (IEEE) 9-bus and IEEE 118-bus test systems. Because of the stochastic behavior of the power system, various and random contingencies are considered. Simulation results demonstrate the efficiency of the hybrid algorithm.