考虑经济效益目标的源网荷储综合能源系统动态最优能流优化研究

doi:10.3969/j.issn.2097-0706.2022.11.009

摘要/Abstract

摘要：

随着新能源大规模接入，电力系统将呈现显著的“双侧随机性”和“双峰双高”的“三双”特征。为保证电力系统安全稳定高效运行，必须加速推进源网荷储一体化和多能互补发展，通过综合能源系统（IES）建设，保障大规模新能源顺利消纳。在综合能源框架下，各能源子系统间的能量交互更加频繁，为获得源网荷储各环节的交互特性、响应时间尺度及调节速率等信息，着眼于综合能源系统动态最优能流分析，以经济、高效为目标分析源网荷储动态最优潮流特性。首先，分别建立了IES中电力网络、天然气网络和热力系统的数学模型；在此基础上，以源网储侧经济成本最低、效率最高为目标，构建了考虑源网荷储互动的多能流系统的整体动态分析模型；最后，基于包含1个6节点的电力系统和1个6节点的供热系统的综合能源系统，分析了多能流系统的动态响应和调控特性，验证了所提出模型的正确性和有效性。

关键词: 综合能源系统, 电-气-热互联系统, 多能流, 最优能流分析, 动态分析, 源网荷储, 双峰双高

Abstract:

With the large-scale access of new energy，the power system shows the characteristics of "two-side randomness"，"two peaks" and "two high proportions". In order to ensure the safe，stable and efficient operation of the power system，it is necessary to accelerate the integration of source，network，load and storage and the complementary development of multiple energy. A large amount of new energy can be consumed by Integrated Energy Systems（IESs）. Energy interactions between energy subsystems can be more frequent in an integrated energy system. In order to obtain the data such as interaction characteristics，response time scale and regulation rate of in source，network，load and storage links， the dynamic optimal energy flow analysis of the integrated energy system is made with the goals of economic benefit and high efficiency. Firstly，the mathematical models of the power grid，natural gas network and thermal system in the IES are established，respectively. Then， the overall dynamic analysis model of the multi-energy flow system considering the energy interaction between source， network， load and storage links is constructed， aiming at the lowest economic cost and the highest efficiency of these links. Finally，based on the case study of an integrated energy system including a 6-node power system and a 6-node heating system，its dynamic response and regulation characteristics of the multi-energy flow system are analyzed，which verifies the correctness and effectiveness of the proposed model.

Key words: integrated energy system, electricity-gas-heat combined system, multi-energy flow, optimal energy flow analysis, dynamic analysis, power-grid-load-storage, "two peaks" and "two high proportions"

中图分类号:

TK01

杨梅, 周喜超, 魏强, 梁大伟, 吴茂乾. 考虑经济效益目标的源网荷储综合能源系统动态最优能流优化研究[J]. 综合智慧能源, 2022, 44(11): 63-69.

YANG Mei, ZHOU Xichao, WEI Qiang, LIANG Dawei, WU Maoqian. Study on dynamic optimal energy flow of a source-network-load-storage integrated energy system considering its economic benefit[J]. Integrated Intelligent Energy, 2022, 44(11): 63-69.

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时间	电功率/MW	电价/[美元·(MW·h)^-1]	时间	电功率/MW	电价/[美元·(MW·h)^-1]
01：00	0	50	13:00	11	105
02：00	0	50	14:00	0	50
03：00	0	50	15:00	0	50
04：00	0	50	16:00	0	50
05:00	0	50	17:00	23	170
06:00	0	50	18:00	11	105
07:00	0	50	19:00	0	50
08:00	0	50	20:00	0	50
09:00	4	70	21:00	18	140
10:00	48	280	22:00	12	110
11:00	28	180	23:00	0	50
12:00	13	120	24:00	0	50

方法	总成本/万美元	求解器时间/s	总求解时间/s
稳态最优潮流	49.29	0.87	91.57
动态最优潮流	47.98	5.48	614.76