| 引用本文: | 李要红,王鹏翔,彭 斌,等.考虑供需匹配特性的冷热电联供系统运行策略研究[J].电力系统保护与控制,2024,52(11):52-62.[点击复制] |
| LI Yaohong,WANG Pengxiang,PENG Bin,et al.Operational strategy of a combined cooling, heating and power system consideringthe matching characteristics of supply and demand[J].Power System Protection and Control,2024,52(11):52-62[点击复制] |
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| 摘要: |
| 针对以电定热和以热定电运行策略能量冗余以及混合热电运行策略能源不足的特性，在热电负荷平衡运行策略的基础上，提出了改进的热电负荷平衡运行策略。以北方某酒店为研究对象，并以最大化能源利用率为目标对系统的装机容量进行了优化，同时提出了能源综合指数，研究了在5种运行策略下购买能量和冗余能量对系统性能的影响。然后分析了在不同运行策略下系统的供需匹配特性和改进的热电负荷平衡策略下系统的能量平衡关系。最后，通过算例探究了改进的热电负荷平衡策略对提高系统经济性的作用，并经过对比分析验证了研究的合理性与有效性。研究结果表明，与其他4种运行策略相比，改进的热电负荷平衡运行策略下系统的能源利用率分别提高了4.3%、4.38%、4.75%、4.73%；能源综合指数分别降低了6.58%、5.96%、2.23%、3.45%；系统的年总成本分别降低了11.65%、2.74%、1.64%、0.74%。其中，改进的热电负荷平衡策略下系统的供需匹配性能最优(为0.9382)。 |
| 关键词: 运行策略 能源利用率 能源综合指数 供需匹配 |
| DOI：10.19783/j.cnki.pspc.231502 |
| 投稿时间：2023-11-27修订日期：2024-04-10 |
| 基金项目:国家自然科学基金项目资助(51966009)；甘肃省重点研发计划项目资助(20YF8GA057) |
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| Operational strategy of a combined cooling, heating and power system consideringthe matching characteristics of supply and demand |
| LI Yaohong,WANG Pengxiang,PENG Bin,YAO Xin |
| (School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China)) |
| Abstract: |
| There is an energy redundancy of the following electric load and following thermal load operational strategies, and an energy deficiency of the following hybrid electric-heating load. Thus an improved following balanced heat-electrical load operational strategy is proposed. Taking a hotel in the north as the research object, the installed capacity of the system is optimized with the goal of maximizing energy utilization rate. At the same time, an energy composite index is proposed, and the effects of purchased and redundant energy on system performance are investigated with five operating strategies. Also the supply and demand matching characteristics of the system using different strategies and the energy balance relationship of the system with the improved strategy proposed are analyzed. Finally, the role of the strategy in improving the system economy is explored through an arithmetic example, and a comparative analysis is conducted to verify the rationality and effectiveness of the study. The results show that, compared with the other four strategies, the energy utilization rate of the system with the improved strategy is increased by 4.3%, 4.38%, 4.75%, and 4.73%, respectively; the energy composite index is reduced by 6.58%, 5.96%, 2.23%, and 3.45%, respectively; and the total annual cost of the system is reduced by 11.65%, 2.74%, 1.64%, and 0.74%, respectively. The system’s supply-demand matching performance with the improved following balanced heat-electrical load strategy is optimum at 0.9382. |
| Key words: operational strategy energy utilization rate energy composite index matching supply and demand |
