Dynamic Economic Dispatch for Multi-Microgrid System using Game Theory
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Date
2020-05
Authors
Kalakova, Aidana
Journal Title
Journal ISSN
Volume Title
Publisher
Nazarbayev University School of Engineering and Digital Sciences
Abstract
The growth of the interest in the Distributed Energy Resources in the Active Distribution
Networks, along with the increasing requirements of the customers, leads to the issue of the
optimal energy scheduling. Forming of the microgrids for the generation of the local energy can
solve this problem by improving the flexibility and reliability of the system by bringing selfsupportable systems. Unfortunately, in case of energy excess or demand in the microgrid, the
trading should be conducted with the grid at the established prices known as Feed-in tariff and
Time-of-use. These prices not optimal for microgrids’ trading, as energy generated by microgrid
is costing less than the price set by the grid for buying, and more than the price set for selling.
Some counties completely eliminated trading with the microgrids, which leads to the significant
challenges to the self-controlled operation systems. By combining ideas of the smart grid and
microgrid, especially the advantages of two approaches, the Multi-Microgrid system comes into
the picture. The Multi-Microgrid system allows energy exchange between the microgrids in the
network by sharing the excess energy with those in demand. Nevertheless, the presence of the
Transactive Energy Management will not fully solve the issue of the total load and generation
difference in the Multi-Microgrid system.
This master thesis work proposes the use of the Dynamic Economic Dispatch for the MultiMicrogrid system with Transactive Energy Management, where Game Theory is used for the
identification of the bidding for the microgrids. In the proposed approach Dynamic Economic
Dispatch is a way of effective management of the microgrids, with providing secure and
economically optimal energy scheduling. Besides, use of the Dynamic Economic Dispatch for the
Multi-Microgrid system management will motivate microgrids to participate in the energy
auctions, which also leads to the diminution of the difference between the load and the generation
in the system. Also, author of work proposes using of three different platforms for energy
exchange: trading with the grid, energy trading with centralized structure, and decentralized
Transactive Energy management, where the aim is to analyze the results of the different
approaches and define the best among them.
Description
Keywords
Distribution Network, DN, Distributed Generator, Game Theory, DG, Research Subject Categories::MATHEMATICS, Dynamic Economic Dispatch