Distributed power dispatch strategy for smart grids with nonuniform communication delays
Peng Li, Jiangping Hu, Yuping Zhang, Hong Yang Zhu · 2017
In this paper, an economic power dispatch problem is considered for smart grids. Firstly, the power dispatch problem is described by a constrained optimization problem, which is solved by Lagrange multiplier and Karush-Kuhn-Tucker condition. The incremental costs of generators are shown to reach consensus when the optimization problem is solved. Secondly, a new dynamic dispatch strategy is proposed for each generator when nonuniform time-varying delays are involved in the communication network for the group of generators. A necessary and sufficient condition is provided for the power dispatch problem when the communication network is fixed and directed. Finally, some numerical simulations are given to validate the theoretical results.