(수정) [장학-비교과] 초청 세미나 안내(2019.05.23.)
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세미나 당일 비치된 방명록 필히 작성요망 (방명록 미작성시 참석 불인정)
-일시: 2019. 5. 23.(목) 10:30
-장소: 공대8호관 409호
제목: Direct Energy Trading of Microgrid in Distribution Energy Market
초록: Recent advancement of distributed renewable generation has motivated microgrids to trade energy directly with one another, as well as with the utility, in order to minimize their operational costs. Energy trading among microgrids, however, confronts challenges such as reaching a fair trading price, maximizing participants’ profit, and satisfying power network constraints. In this paper, we formulate the direct energy trading among multiple microgrids as a generalized Nash bargaining (GNB) problem that involves the distribution network’s operational constraints (e.g., power balance equations, voltage limits). We prove that solving the GNB problem maximizes social welfare and also fairly distributes the revenue among the microgrids based on their market power. To address the nonconvexity of the GNB problem, we propose a two-phase approach. The first phase involves solving the optimal power flow problem in a distributed fashion using the alternative direction method of multipliers to determine the amount of energy trading. The second phase determines the market clearing price and mutual payments of the microgrids. Simulation results on an IEEE 33-bus system with four microgrids show that the proposed framework substantially reduces total network cost by 37.2%. Our results suggest direct trading need be enforced by regulators to maximize the social welfare.
HONGSEOK KIM (S’06–M’10–SM’16) received the B.S. and M.S. degrees in Electrical Engineering from Seoul National University in 1998 and 2000, respectively, and the Ph.D. degree in Electrical and Computer Engineering from The University of Texas at Austin in 2009. He was a member of Technical Staff with Korea Telecom from 2000 to 2005. He was a PostDoctoral Research Associate with the Department of Electrical Engineering, Princeton University, from 2009 to 2010. He was a member of Technical Staff with Bell Labs, Murray Hill, NJ, USA, from 2010 to 2011. He is currently an Associate Professor with the Department of Electronic Engineering, Sogang University, South Korea. His research interests include wireless networks, smart grid, and energy ICT, specifically focused on machine learning for energy forecasting, energy trading and electricity market, energy storage system, microgrid, optimal power flow. He was the recipient of the Korea Government Overseas Scholarship from 2005 to 2008. He received the Haedong Young Scholar Award from KICS in 2016. He served as an Editor of the Journal of Communication Networks from 2015 to 2018. He served as a Guest Editor of Energies in 2018-2019.