考虑气热惯性的综合能源系统优化配置研究

doi:10.3969/j.issn.2097-0706.2023.10.006

摘要/Abstract

摘要：

电、气、热耦合的综合能源系统中蕴藏着丰富的灵活惯性资源。由于热力系统和天然气系统均具有相似的慢动态特性，都可以针对外界功率波动提供缓冲空间以缓解外部的能量冲击，在电力系统功率缺额场景下协同利用综合能源系统气热惯性，为电网故障提供功率支撑。基于综合能源系统的气热惯性特性分别建立相应的数学模型，提出了考虑气热惯性的综合能源系统运行策略；以运行经济性最优为目标建立了考虑气热惯性的综合能源系统应对功率缺额优化模型，通过实际场景验证了所提策略的可行性。算例结果结合实际运行条件，给出了不同情况下综合能源系统园区气热惯性资源与配置的经济最优解。

关键词: 综合能源系统, 气热惯性, 优化配置, 热电联产机组, 功率支撑, 热电联产

Abstract:

The integrated energy systems coupling electricity，gas and heat resources is of flexible inertia. Given that both the thermal system and natural gas system have similar slow-dynamic characteristics，they can provide buffer space for external power fluctuations. In the context of power shortage， gas-thermal inertia of integrated energy systems can provide power support for power grid faults. Firstly， mathematical models are established based on the gas-thermal inertia characteristics. Then，an operation strategy of the integrated energy system considering gas-thermal inertia is proposed. Aiming at the optimal economy，an optimization model for the energy system is established to solve the power shortage. The feasibility of the proposed strategy is verified under different practical scenarios， and the optimal economic operation solutions of the integrated energy system considering gas-thermal inertia under different conditions are given.

Key words: integrated energy system, gas-thermal inertia, optimal configuration, combined heat and power unit, power support, combined heat and power generation

中图分类号:

TK01

缪蔡然, 朱姚培, 王琦. 考虑气热惯性的综合能源系统优化配置研究[J]. 综合智慧能源, 2023, 45(10): 44-52.

MIAO Cairan, ZHU Yaopei, WANG Qi. Optimal configuration of integrated energy systems considering gas and thermal inertia[J]. Integrated Intelligent Energy, 2023, 45(10): 44-52.

图/表 17

图1

图2

图3

图4

图5

表1

IES能源枢纽设备参数

参数	值	参数	值	参数	值
$η T$	0.980 0	$η E B$	0.900 0	$η C H P E$	0.300 0

表1

表2

Unit cost of gas-thermal inertia output 美元/（kW·h）

参数	值	参数	值
$c R H$	0.009 6	$c R G$	0.038 6

表2

表3

表4

表5

表6

各项能源出力形式上限

参数	值	参数	值	参数	值
$P R H, m a x$	600	$P R G, m a x$	500	$P G, m a x$	500

表6

表7

图6

图7

表8

图8

表9

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总热量偏移绝对值/ (kW·h)	用户舒适度单位成本/ [美元·（kW·h）^-1]
[0~50)	0.029 0
[50~100)	0.039 1
[100~150)	0.058 0
[150~200]	0.087 0

热电比	热电比调整单位成本
[1.00~1.33)	0.029 0
[1.33~1.83)	0.039 1
[1.83~2.50)	0.058 0
[2.50~3.17]	0.087 0

出力形式	成本/[美元·（kW·h）^-1]	功率/kW
热惯性	14.816 1	1 537.293 2
气惯性	63.407 3	1 644.775 9
发电侧	0.000 0	0.000 0
用户舒适度	6.264 5	—
热电比调整	51.914 7	—
总成本	136.402 7	—

阶段	热电比范围	热电比调整成本趋势	功率支撑总成本趋势
1	[1.30~2.50)	增加	减少
2	[2.50~3.17]	增加	增加

平时电价/ [美元·（kW·h）^-1]	气热惯性成本/美元	发电侧成本/美元	功率支撑总成本/美元
0.071 0	74.48	0.00	135.23
0.069 5	74.48	0.00	135.23
0.068 1	3.07	109.42	100.11
0.067 4	2.04	89.29	97.78
0.006 5	1.02	84.96	88.74