A Secondary Control Method for Economic Dispatch of Microgrid Through Distributed Time-Varying Quadratic Optimal Resource Allocation

This paper proposes a secondary control method for economic dispatch of microgrid through distributed time-varying quadratic optimal resource allocation. The method aims to minimize the operation cost while ensuring the power balance and frequency restoration in the microgrid. Firstly, the droop controlled distributed generator model and secondary control model for economic dispatch are briefly reviewed. Then, this paper utilizes the distributed time-varying quadratic optimization technique to allocate resources optimally among the distributed generators, and proposes a secondary control method for economic dispatch of microgrid. Also, the strict mathematical proof for the control method is given. Finally, the effectiveness of this approach is demonstrated through several case studies.