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Multi-Player Interactive Decision-Making Model for Operational Flexibility Improvement of Regional Integrated Energy System |
Wang Xuechun, Chen Hongkun, Chen Lei |
School of Electrical Engineering and Automation Wuhan University Wuhan 430072 China |
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Abstract With the large-scale of the micro energy network containing renewable energy integrated into the regional integrated energy system (RIES), its fluctuation and uncertainty confront the flexibilityof the system with significant challenge. In view of this problem, a multi-player bi-level interactive decision-making model was proposed based on the co-operating market mechanism. Firstly, the flexible ramping requirements in RIES operation were specified, and the applicability of flexible ramping product (FRP) to meet the requirements was analyzed from the market aspect. Secondly, the FRP market was introduced to co-operate with the electrical and thermal energy market, then a co-operating market mechanism was carried out to stimulate the market players in both source and demand side to dispatch the flexible ramping resources. In order to solve the Nash equilibrium of the market, a multi-player interactive decision model of non-cooperative game of multiple market players in the external level and clearing of RIES operators in the internal level was established. Q-learning algorithm and path tracking interior point method were adopted to solve the external and internal layer models, respectively. Finally, a numerical example of combined electrical-thermal RIES was used to carry out a comparative analysis of multiple scenarios. The results show that the proposed method can reduce renewable energy curtailment, the total energy cost and the average energy price, thus improving the system operational flexibility effectively.
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Received: 08 April 2020
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