Decentralized Coordination Of Controlled Loads And Transformers In A Hierarchical Structure

The paper considers the coordination of controlled loads in a setting where the loads are connected to the distribution network through transformers. Our objective is to design a decentralized control method that can motivate selfish loads to achieve global benefits. This problem has a hierarchical structure. At the lower level, each transformer broadcasts a price signal to the loads connect to it, under which loads establish their best usage strategies. At the upper level, transformers communicate with the distribution network and obtain a price reflecting the system generation cost. The price broadcast by each transformer includes this system price together with another component that reflects individual loading characteristics. By proposing a dynamic update algorithm, it is shown that the system converges to the unique and efficient solution with fast convergence rate. (C) 2017, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.