耦合储能电池的冷热电联供系统全工况性能分析

doi:10.11930/j.issn.1004-9649.202301046

摘要/Abstract

摘要：

冷热电联供系统具有能源利用效率高、运行调节灵活的优点。设计了耦合储能电池的冷热电联供一体化系统，建立了关键部件的精细化数学模型，研究了压气机和透平的效率、环境温度对联供系统性能的影响。针对典型制冷和供热工况，研究了耦合电池储能的冷热电联供系统全工况热力性能、储能电池的充放电特性。结果表明：环境温度对冷热电联供系统性能具有较大的影响，其最大供热量随着环境温度的降低而下降，最大供冷量随着环境温度的升高而下降。制冷模式下，冷负荷、电负荷全天波动较大，全天平均冷、电负荷仅为额定功率的39.9%左右，全天平均能源利用系数为0.712。供热模式下，典型日全天燃机循环的发电效率、供热系数以及能源利用系数波动很小，且均高于制冷模式下相应的指标。

关键词: 燃气轮机, 冷热电联供, 性能, 全工况, 储能电池

Abstract:

The combined cooling, heating, and power system (CCHP) boasts efficient energy use and flexible operation. The CCHP integrated system for energy storage battery was designed, with the refined mathematical models of the key components established, and the influence of the compressor and turbine efficiency and ambient temperature on CCHP performance studied. The thermodynamic performance of the CCHP at comprehensive conditions and the charging-discharging characteristics of the battery energy storage system were investigated according to the typical modes of chilling and heating. The results show that the ambient temperature has a significant influence on the performance of CCHP. The maximum heat supply decreases with the decrease in the ambient temperature, and the maximum chilling supply decreases with the increase in the ambient temperature. The cooling load and electric load fluctuate greatly throughout the day in the chilling mode, with the average value for cooling load and electric load representing only about 39.9% of the rated load, and an average energy utilization coefficient of 0.712. In the heating mode, there is insignificant fluctuation of power generation efficiency, heating coefficient and energy utilization coefficient on the typical day, which are all higher than the corresponding indexes in the chilling mode.

Key words: gas turbine, combined cooling, heating and power system, performance, comprehensive conditions, energy storage battery

张福国, 李泽鹏, 吴鹏, 王雪, 李晓恩. 耦合储能电池的冷热电联供系统全工况性能分析[J]. 中国电力, 2024, 57(2): 161-170.

Fuguo ZHANG, Zepeng LI, Peng WU, Xue WANG, Xiaoen LI. Performance Analysis of Combined Cooling, Heating and Power System Integrated with Energy Storage Battery at Comprehensive Conditions[J]. Electric Power, 2024, 57(2): 161-170.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202301046

https://www.electricpower.com.cn/CN/Y2024/V57/I2/161

图/表 9

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数据分类	循环净功率/MW	简单循环发电效率/ %	热耗率/ (kJ·(kW·h)^–1)	燃料量/ (kg·s^–1)	燃料低位发热量/ (MJ·m^–3)	压气机进口空气量/ ( kg·s^–1)	压气机排气温度/℃	压气机压比	燃气初温/℃	燃气透平等熵效率	燃气轮机排气流量/ (kg·s^–1)	燃气轮机排气温度/℃
厂家提供数据	1.210	24.33	14795.0	0.1087	35	6.43	—	6.70	904.00	—	6.539	505.00
建模结果	1.215	24.43	14736.0	0.1085	35	6.44	271.0	6.72	912.30	0.85	6.546	508.30
相对误差/%	0.410	0.41	–0.4	–0.1800	0	0.16	—	0.30	0.92	—	0.110	0.65

数据分类	循环净功率/MW	简单循环发电效率/ %	热耗率/ (kJ·(kW·h)^–1)	燃料量/ (kg·s^–1)	燃料低位发热量/ (MJ·m^–3)	压气机进口空气量/ ( kg·s^–1)	压气机排气温度/℃	压气机压比	燃气初温/℃	燃气透平等熵效率	燃气轮机排气流量/ (kg·s^–1)	燃气轮机排气温度/℃
厂家提供数据	1.210	24.33	14795.0	0.1087	35	6.43	—	6.70	904.00	—	6.539	505.00
建模结果	1.215	24.43	14736.0	0.1085	35	6.44	271.0	6.72	912.30	0.85	6.546	508.30
相对误差/%	0.410	0.41	–0.4	–0.1800	0	0.16	—	0.30	0.92	—	0.110	0.65

项目	制冷工况	供热工况
环境温度/℃	30	5
压气机进口空气量/( kg·s^–1)	5.944	6.628
压气机出口压力/MPa	0.629	0.702
燃料量/( kg·s^–1)	0.0615	0.0727
燃气轮机排气流量/( kg·s^–1)	6.006	6.700
燃气轮机排气温度/ ℃	541.3	514.8
回热器出口烟气温度/ ℃	316.8	287.5
循环净功率/kW	975	1325.9
简单循环发电效率/%	34.61	39.80
蒸发器负荷/kW	965.4	732.1
冷凝器负荷/kW	1033.6	801.9
吸收器负荷/kW	1171.0	976.0
发生器负荷/kW	1239.1	1045.7
制冷/供热系数	0.779	1.700
能源利用系数	0.689	0.932

项目	制冷工况	供热工况
环境温度/℃	30	5
压气机进口空气量/( kg·s^–1)	5.944	6.628
压气机出口压力/MPa	0.629	0.702
燃料量/( kg·s^–1)	0.0615	0.0727
燃气轮机排气流量/( kg·s^–1)	6.006	6.700
燃气轮机排气温度/ ℃	541.3	514.8
回热器出口烟气温度/ ℃	316.8	287.5
循环净功率/kW	975	1325.9
简单循环发电效率/%	34.61	39.80
蒸发器负荷/kW	965.4	732.1
冷凝器负荷/kW	1033.6	801.9
吸收器负荷/kW	1171.0	976.0
发生器负荷/kW	1239.1	1045.7
制冷/供热系数	0.779	1.700
能源利用系数	0.689	0.932

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