Robust Control Method for Power Balance in Wind Energy Integrated in Power Systems

Abstract

With the industry penetration of large-scale wind power, feature changes in reliable operation are induced by uncertain output, so adequate robust decisions are an inevitable way to secure utilization of wind energy security and stability. In light of the problem of tracking robust decision-maker expectations during uncertain demand for adequate dispatch, an adaptive dispatch mechanism for a ‘general adequacy-economy’ game is proposed. First, the ‘general adequacy-economy’ differential game model is designed, and a robust control theory is introduced to prove the existence of the differential game solution. Furthermore, the evolution vector and confidence interval is defined and an evolutionary feedback equation is established, cascading the differential game solution to obtain the adaptive game solution and revise its dynamic robustness in advance. Ultimately, a ‘general adequacy-economy’ dynamic dispatch is achieved in advance, which can satisfy decision-maker expectations for robust tracking during the most uncertain modes in adequacy resource demand. The proposed model for the mechanism and the method are applied to wind energy integrated in an actual grid operation, and the results demonstrate its robustness.