Strategy-driven dynamic optimal dispatch for microgrids under TOU tariffs

Abstract

The optimal dispatch problem is a big challenge to hybrid energy microgrids with islanded and grid-connected operations, particularly considering demand response. This paper presents a novel strategy-driven dynamic optimal dispatch method for microgrids under TOU tariffs. The combined dispatch strategy is firstly formulated considering two aspects of economy and stability in the operation of microgrid, and then optimized by a given dispatch excitation mechanism to attain the minimum total operation cost objective for microgrid. The effectiveness of the proposed method is verified in a real system of Mengdong microgrid, China, and the results shows a remarkable economic dispatch improvement of the proposed method, compared to the previous dynamic dispatch method.