Multi-Coupling System of Source Hydrogen and Ammonia Based on Power Deviation Allocation Participates in Peak Shaving Optimal Dispatching of Power Grid
Kong Lingguo1, Li Xinrong1, Yang Shihui1,2, Zhang Yan3, Yin Ge4
1. Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education Northeast Electric Power University Jilin 132012 China; 2. China Electric Power Research Institute Beijing 100192 China; 3. Guoneng Hydrogen Technology (Beijing) Co. Ltd Beijing 100007 China; 4. National Energy Group Science and Technology Research Institute Co. Ltd Nanjing 210023 China
Abstract：At present, the relevant research on the system of producing hydrogen and synthesizing ammonia from electrolyzed water mainly focuses on capacity allocation, modeling and control technology and flexibility of multi-section in synthetic ammonia production, and the power market mechanism is not considered when the system is applied to peak shaving auxiliary service.Therefore, this paper establishes an optimal dispatching model of multi-coupling system of source hydrogen and ammonia to participate in peak-shaving auxiliary service. Firstly, an optimization model is established based on the maximum profit of ammonia sales in the multi-coupling system of source hydrogen and ammonia, and the operating power of each device in the coupling system, the power grid interaction power and the output of synthetic ammonia are obtained by solving, and this power is used as the power base point to connect to the power system; The limit value of interactive power between coupling system and power grid is obtained without considering economy. Because the time scale of ammonia load adjustment is hourly, and the income from ammonia sales is an important part of the system income, the planned output of ammonia will not change. When the coupling system is connected to the power system and participates in the auxiliary peak-shaving service, the interactive power between the coupling system and the power grid changes, and the photovoltaic, hydropower and electrolytic cells in the coupling system share the power change; Taking the minimum change of income caused by the change of interactive power of power grid as the goal, the change of income of coupling system is obtained, which is the cost of coupling system participating in peak shaving. According to the new energy forecast curve of the power system, the system load forecast curve and the interaction power limit between the coupling system and the power grid, the objective function is established with the minimum variance of the net load of the power grid and the minimum operating cost of the system, and the power of the interaction between the coupling system and the power grid under peak shaving is obtained. According to the results of peak shaving analysis, connecting the source hydrogen and ammonia system to the power system to participate in peak shaving auxiliary service can reduce the variance of system net load and effectively reduce the deep peak shaving of thermal power units. Compared with before and after the connection, the deep peak shaving is reduced by 27.32% and the variance of system net load is reduced by 55.15%. The source hydrogen ammonia system participates in peak shaving, saving the cost of deep peak shaving of thermal power units. Compared with before and after access, the compensation cost of deep peak shaving of thermal power units is reduced by 41.60%. At the same time, reduce the power generation cost of thermal power units and reduce the abandonment rate of new energy in the system. The peak-shaving subsidy obtained by the source hydrogen and ammonia system participating in the auxiliary peak-shaving service of the power system is greater than the cost generated by participating in the peak-shaving, which improves the total benefits and increases the initiative of the source hydrogen and ammonia system participating in the auxiliary peak-shaving service.
孔令国, 李昕嵘, 杨士慧, 张岩, 殷戈. 基于功率偏差分摊的源氢氨多元耦合系统参与电网调峰优化调度[J]. 电工技术学报, 2025, 40(21): 7000-7012.
Kong Lingguo, Li Xinrong, Yang Shihui, Zhang Yan, Yin Ge. Multi-Coupling System of Source Hydrogen and Ammonia Based on Power Deviation Allocation Participates in Peak Shaving Optimal Dispatching of Power Grid. Transactions of China Electrotechnical Society, 2025, 40(21): 7000-7012.
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