Optimal reactive power dispatch of renewable energy based on primal-dual interior point filter method

This paper proposes an optimal reactive power dispatch strategy of the renewable energy. It coordinates the different reactive power sources by considering the topological structure and the feeder lines impedance of the renewable energy. The primal-dual interior point filter method is utilized to solve such a nonlinear optimization problem and bind the voltage of the point of common coupling of the renewable energy to the reference value. The proposed strategy gives priority to the reactive power output of wind turbine generators to ensure the dynamic compensation devices could have enough reactive power reserves and meanwhile equipoises terminal voltage profiles among all the controlled wind turbine generators. The simulation results of an actual renewable energy in North China validate the control performance of the proposed optimization model and the effectiveness of the primal-dual interior point filter method.