Consensus-based distributed coordinated operation of active distribution networks with electric heating loads

Abstract

Aiming at the problems of a large amount of communication information, changeable network topology, and communication failures in active distribution networks with electric heating loads, a consensus distributed coordinated operation method for active distribution networks considering communication failures is proposed. Firstly, a coordinated optimization model is established with the goal of maximizing the comprehensive benefits of agents in the active distribution network with electric heating loads. Then, the consensus variable for each agent is defined based on the coordinated optimization model. On this basis, the consensus variable of each agent is extracted using the Lagrange multiplier method and KKT optimal conditions; Finally, considering the impact of communication failures on the consensus-distributed coordinated operation of active distribution networks with electric heating loads, a modified variable is introduced in the iterative process to improve the consensus-distributed algorithm so as to eliminate the unbalanced power of the system. A 5-machine active distribution network example system is constructed for simulation verification. The results show that the improved consensus distributed method can eliminate the imbalance between supply and demand in the system under communication failures, and the application scenarios have strong robustness. After electric heating loads participate in the coordinated operation, it can promote the accommodation of new energy power and the economic operation of the system.