基于Aspen Plus的等压压缩空气储能系统性能仿真及分析

doi:10.3969/j.issn.2097-0706.2024.12.009

综合智慧能源 ›› 2024, Vol. 46 ›› Issue (12): 72-80.doi: 10.3969/j.issn.2097-0706.2024.12.009

基于Aspen Plus的等压压缩空气储能系统性能仿真及分析

胡雪如¹(), 邢令利¹^,^*(), 李原圆¹, 苏文², 刘鹏飞¹, 丁若晨³, 蔺新星³

1.湖南科技大学化学化工学院，湖南湘潭 411201
2.中南大学能源科学与工程学院，长沙 410083
3.中国三峡集团科学技术研究所，北京 100038

收稿日期:2024-09-18 修回日期:2024-10-21 出版日期:2024-11-18
通讯作者: *邢令利（1990），女，讲师，博士，从事热力循环储能、热力系统仿真与构建等方面的研究， xinglingli@hnust.edu.cn。
作者简介:胡雪如（2004），女，从事化工能源热力系统方面的研究，2206080131@mail.hnust.edu.cn
基金资助:
国家自然科学基金项目(52106037);湖南省自然科学基金项目(2024JJ6218)

Performance simulation and analysis of an isobaric compressed air energy storage system based on Aspen Plus

HU Xueru¹(), XING Lingli¹^,^*(), LI Yuanyuan¹, SU Wen², LIU Pengfei¹, DING Ruochen³, LIN Xinxing³

1. College of Chemistry and Chemical Engineering， Hunan University of Science and Technology， Xiangtan 411201， China
2. School of Energy Science and Engineering， Central South University， Changsha 410083， China
3. Science and Technology Research Institute， China Three Gorges Corporation， Beijing 100038， China

Received:2024-09-18 Revised:2024-10-21 Published:2024-11-18
Supported by:
National Natural Science Foundation of China(52106037);Hunan Provincial Natural Science Foundation Project(2024JJ6218)

摘要/Abstract

摘要：

压缩空气储能是解决可再生能源发电并网、提高电网稳定性的有效方法。为减少储气库体积、维持系统工况稳定，采用工业流程模拟软件Aspen Plus建立了100 MW×4 h等压压缩空气储能（I-CAES）系统的热力学仿真模型，计算了设计工况下的系统性能，分析了压缩机出口温度及压缩膨胀级数对系统运行的影响。> 结果表明，当压缩机出口温度为160 ℃时，4级压缩-4级膨胀的I-CAES系统储能效率可达62.61%，储能密度为5.99 kW·h/m³；压缩机出口温度每升高10 ℃，储能密度及效率分别增加2.66 kW·h/m³，1.49百分点；压缩膨胀级数每增加1，储能密度及效率分别增加6.34 kW·h/m³，0.81百分点。

关键词: 等压压缩空气储能, 可再生能源, Aspen Plus, 压缩机出口温度, 压缩膨胀级数, 储能效率, 储能密度

Abstract:

Compressed air energy storage （CAES） is an effective solution for integrating renewable energy generation into the grid and improving grid stability. To reduce the volume of the air storage reservoir and maintain stable system operation， a thermodynamic simulation model for a 100 MW×4 h isobaric compressed air energy storage （I-CAES） system was developed using the industrial process simulation software Aspen Plus. The system's performance was calculated under design conditions， and the effects of compressor outlet temperature and the number of compression-expansion stages on system operation were analyzed. The results showed that when the compressor outlet temperature was 160 ℃， the I-CAES system with 4 compression and 4 expansion stages achieved an energy storage efficiency of 62.61% and an energy storage density of 5.99 kW·h/m³. For every 10 ℃ increase in compressor outlet temperature， both the energy storage density and efficiency increased by 2.66 kW·h/m³ and 1.49 percentage points， respectively. Additionally， for each additional compression-expansion stage， the energy storage density and efficiency increased by 6.34 kW·h/m³ and 0.81 percentage points， respectively.

Key words: isobaric compressed air energy storage, renewable energy, Aspen Plus, compressor outlet temperature, compression-expansion stages, energy storage efficiency, energy storage density

中图分类号:

TK02

胡雪如, 邢令利, 李原圆, 苏文, 刘鹏飞, 丁若晨, 蔺新星. 基于Aspen Plus的等压压缩空气储能系统性能仿真及分析[J]. 综合智慧能源, 2024, 46(12): 72-80.

HU Xueru, XING Lingli, LI Yuanyuan, SU Wen, LIU Pengfei, DING Ruochen, LIN Xinxing. Performance simulation and analysis of an isobaric compressed air energy storage system based on Aspen Plus[J]. Integrated Intelligent Energy, 2024, 46(12): 72-80.

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参数	设计工况	变工况
额定功率/MW	100
发电时长/h	4
压缩机压缩时长/h	8
膨胀机等熵效率/%	90
压缩机等熵效率/%	85
膨胀机机械效率/%	97
压缩机机械效率/%	97
热罐压力/MPa	1.6
换热窄点温度/℃	10
当地大气压/kPa	101.325
压缩及膨胀级数	4	3~5
压缩机出口温度/℃	160	140~180

状态点	温度/℃	压力/MPa	质量流量/(kg·s^-1)
1	30.00	0.10	148.91
2	160.17	0.30	148.91
3	35.00	0.26	148.91
4	160.02	0.74	148.91
5	35.00	0.70	148.91
6	160.02	1.99	148.91
7	35.00	1.95	148.91
8	160.01	5.50	148.91
9	35.00	5.50	148.91
1+	150.01	1.60	35.81
2+	150.00	1.60	35.99
3+	150.00	1.60	36.41
4+	150.03	1.60	37.61
7+	150.01	1.60	145.83
7++	34.00	1.60	145.83
C1	34.00	1.60	35.81
C2	34.00	1.60	35.99
C3	34.00	1.60	36.41
C4	34.00	1.60	37.61
10	35.00	5.50	296.69
11	139.00	5.50	296.69
12	62.07	2.44	296.69
13	139.00	2.40	296.69
14	47.34	0.89	296.69
15	139.00	0.85	296.69
16	47.35	0.31	296.69
17	139.00	0.27	296.69
18	47.35	0.10	296.69
1++	59.70	1.60	75.20
2++	81.76	1.60	72.54
3++	66.80	1.60	71.61
4++	66.30	1.60	71.20
6--	68.62	1.60	290.55
8+	149.00	1.60	290.55
H1	149.00	1.60	75.20
H2	149.00	1.60	72.54
H3	149.00	1.60	71.61
H4	149.00	1.60	71.20

参数	数值
总发电量/(MW·h)	400.00
总耗电量/(MW·h)	638.85
总空气量/t	4 288.65
发电总需热水量/t	4 183.94
储电总储水量/t	4 199.86
储、发电热水量差/t	15.92
储气库体积/m³	66 792.54
储能密度/[(kW·h)·m^-3]	5.99
η_RTE/%	62.61

基于Aspen Plus的等压压缩空气储能系统性能仿真及分析

Performance simulation and analysis of an isobaric compressed air energy storage system based on Aspen Plus

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