Keywords
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Benders decomposition (BD), emergency demand
response, game theory, information gap decision theory (IGDT),
microgrid (MG), power exchange.
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Abstract
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In the competitive electricity markets, each microgrid
(MG) aggregator strives to maximize its own profit, whereas their
coordination is a serious challenge for distribution system operator
(DSO). In addition, indefiniteness of market clearing price
and pungent alterations of renewable power generation are driving
this issue toward a more complicated problem. To address this
problem, we proposed an unprecedented game theoretic model by
means of Stackelberg strategy to peruse the competition among
MGs aggregators and DSO in order to attain the equilibrium point
that can maximize the profit of all players who participate in retail
market. Our design objective is to distinguish the optimal power
exchanges between the MGs and market simultaneously considering
emergency demand response program in order to hedge the
risk of participation in retail market. Furthermore, information
gap decision theory has been fulfilled to cope with drastic uncertainty
of the problem. Finally, Benders decomposition (BD) associated
with mathematical program with equilibrium constraints and
strong duality theorem are accomplished to make the proposed
model computationally tractable and subsequently replaced by its
Karush–Kuhn–Tucker optimality conditions, which are in turn
linearized. The executed detailed and extensive results indicate the
sufficiency and competency of the proposed model.
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