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Direct transaction model for wind-solar-storage combined power station and power users
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Shuxin Sun1, Pengfei Song2, Ying Qiao1, Jiaming Li1, Zongxiang Lu1
Renewable Energy Resources | 2024, 42(9) : 1237 - 1245
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Renewable Energy Resources | 2024, 42(9): 1237-1245
Direct transaction model for wind-solar-storage combined power station and power users
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Shuxin Sun1, Pengfei Song2, Ying Qiao1, Jiaming Li1, Zongxiang Lu1
Affiliations
  • 1 Department of Electrical Engineering Tsinghua University Beijing 100084 China
  • 2 State Grid Xinjiang Electric Power Company Urumqi 830008 China
Published: 2024-09-20
Outline
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With the continuous improvement of the accuracy of renewable energy and load forecasting, the direct transaction of electric energy between windsolarstorage combined power station and power users has become feasible. Considering the impacts of direct transaction of electric energy on the system operation, a consumption model with direct transaction of electric energy between windsolarstorage system and power users is established. The model aims to maximize the total social benefits. The power output constraints of direct power purchase contracts and the related operation constraints of the energy storage are introduced to the traditional model. At the same time, it makes adjustments to the constraints of total power purchase contracts, and adds the wheeling cost and contracts reduction penalties to weigh the comprehensive benefits brought by direct power purchasing to the system. Combined with the generated clustering scenario, the dayahead optimization results of the windsolarstorage power station are analyzed through a numerical example, and the influence of the contract power limit factor and penalty factor on the quantity of direct purchase power and the total social benefits is studied. The impact of electricity price on the profit balance is analyzed with the Nash bargaining model, which verifies the feasibility and rationality of the proposed model.

direct transaction of electric energy  /  scene clustering  /  day -ahead dispatching  /  contract power limit factor  /  penalty factor
Shuxin Sun, Pengfei Song, Ying Qiao, Jiaming Li, Zongxiang Lu. Direct transaction model for wind-solar-storage combined power station and power users[J]. Renewable Energy Resources, 2024 , 42 (9) : 1237 -1245 .
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Article Info
  • Receive Date：2023-03-18
  • Online Date：2025-07-22
  • Published：2024-09-20
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  • Received：2023-03-18
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Affiliations
    1 Department of Electrical Engineering Tsinghua University Beijing 100084 China
    2 State Grid Xinjiang Electric Power Company Urumqi 830008 China
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