마이크로그리드 활성화를 위한 정책 의사결정 문제 연구:마이크로그리드의 잉여·부족 전력의 가격을 중심으로
A Game Theoretic Decision Making on the Prices for Surplus and Deficiency of Power Generation in the Microgrids
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초록
현대 산업에 근간이 되는 전력의 분배 소비 효율화를 위한 스마트그리드의성패는 구성 노드들의 지능적 상호작용에 좌우된다. 특히 구성요소 중 하나인마이크로그리드는 네트워크의 유연성과 효율적 전력생산에 중요한 역할을 한다. 이 논문은 마이크로그리드에서 생산되는 전력의 잉여와 부족을 해결하기위한 전력의 판매 및 구매의 의사결정이 상위의 전력 생산이나 판매회사(혹은배전회사)와의 쌍무적 계약에서 정책적으로 어떻게 결정되어야 하는지를 연구했다. 두 계약 당사자들의 의사결정 모형을 비용함수를 통해 제시하고 비협조적 게임이론을 통하여 분석하여 해를 도출하였으며, 해를 통해 나타나는 전력거래가격과 마이크로그리드의 전력 생산의 관계를 밝힘으로써 마이크로그리드활성화를 위한 정책적 함의를 제시하였다.
Abstract
The success of the smart grid, a new power networking technology toenhance the efficiency in electric power generation, distribution andconsumption as a modern industry infrastructure, depends upon theintelligent interaction among its constituents. The microgrid, one of theconstituents, plays a critical role in its flexible networking and efficientpower generation. This paper studies the decision-making and conditionson purchase and sales of power on the mutual contract with a powergenerator or a distributor in the upper layer of the network in orderto deal with the power deficiency and surplus in a microgrid. From thecost functions of the two parties, their decision-making models areproposed, and Nash equilibrium is reduced as a non-cooperative gamemodel. The solution shows the relationship between the price involved inpower transaction and the power generation in a microgrid, which canbe used for policies in promoting the microgrid.
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