Journal of Guangxi Normal University(Natural Science Edition) ›› 2023, Vol. 41 ›› Issue (1): 48-57.doi: 10.16088/j.issn.1001-6600.2022030306

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Optimal Dispatch of Park Integrated Energy System Including Wind Power-Hydrogen Energy-P2G

SU Shiwei1,2*, HAO Yitong1, SONG Yujiao3, ZHANG Lei1, ZHI Li1, HAO Yifan4   

  1. 1. School of Electrical and New Energy, China Three Gorges University, Yichang Hubei 443002, China;
    2. Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station, China Three Gorges University, Yichang Hubei 443002, China;
    3. Zhaoxian Power Supply Branch of State Grid Hebei Electric Power Co., Ltd., Shijiazhuang Hebei 051530, China;
    4.School of Electronics and Information, Xi’an Polytechnic University, Xi’an Shaanxi 710048, China
  • Received:2022-03-03 Revised:2022-03-28 Online:2023-01-25 Published:2023-03-07

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Abstract: The integrated energy system combining wind power generation and electricity to gas is an effective way to realize energy efficient utilization and has great development potential. How to rationally plan and dispatch the integrated energy systemis a key problem to be solved urgently. In this paper, the operation process of electricity to gas is divided into two stages:electric hydrogen production and hydrogen methanation. Firstly, in the stage of water electrolysis hydrogen production, combining with the future development trend of hydrogen energy demand, unstable wind power is converted into hydrogen to supply hydrogen load.Secondly, with the goal of minimizing the sum of operation cost and carbon emission cost, an economic optimal dispatching model of the park comprehensive energy system including wind power-hydrogen energy-electric power to gas (P2G) is established. Simulations showthat compared with the traditional electric power to gas contained in the system, the model proposed can realize energy efficient utilization, improve the economic benefit of integrated energy system and low carbon, and the total cost is reduced by 16.61%. Finally, the weight coefficient is introduced to analyze the sensitivity of the system, and the reasonable range is obtained for reference.

Key words: park, integrated energy system, hydrogen, P2G, low-carbon, optimal dispatch

CLC Number: 

  • TM73
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