A day-ahead optimized operation of integrated energy system and prosumers with flexible economic regulation of electric/thermal storage

doi:10.19799/j.cnki.2095-4239.2022.0538

Abstract

Abstract:

Multiheterogeneous energy storage technology plays an active role in the flexible operation and resource coordination of integrated energy systems. In this study, we propose a day-ahead game-robust optimization operation method for integrated energy systems considering flexible economic regulation of electric/thermal energy storage. This method taps the economic potential of electric/thermal heterogeneous energy storage in energy trading and the flexible potential under uncertain factors. First, an integrated energy system scheduling model and energy storage operation model are established considering the security constraints of state quantities such as node voltage and pipeline temperature. Then, under the framework of electric heating energy trading, the Stackelberg model and the MPEC form of the game between the integrated energy service provider and the prosumers are established considering the economic operation of energy storage. Next, based on the Stackelberg model, a two-stage robust optimization model is proposed considering the flexible intraday adjustment of battery energy storage and is solved by an improved column constraint generation algorithm. Finally, an example is given to verify the effectiveness of the proposed method. The flexible and economic regulation of energy storage can reduce the system operation cost and ensure the balance of intraday power supply and demand.

Key words: electrical/thermal energy storage, flexible economic regulation, integrated energy systems, prosumer, Stackelberg game

CLC Number:

TM 73

Shigang LUO, Wei ZHANG, Weiwu LI, Yongli BAI. A day-ahead optimized operation of integrated energy system and prosumers with flexible economic regulation of electric/thermal storage[J]. Energy Storage Science and Technology, 2023, 12(2): 486-495.

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储能类型	容量/MWh	功率/MW	充放电效率	初始SOC	SOC范围
电池储能(BES)	1.6	0.8	0.95	0.4	[0.2, 0.9]
热储能(TES)	2	1	0.75	0.4	[0.1, 1]

编号	新能源类型	负荷类型(电负荷/热负荷)	燃气轮机	热泵
MG1	光伏	1.2 MW/—	1 MW	—
MG2	风电	0.6 MW/0.8 MW	0.2 MW	0.5 MW

设备名称	有功功率 /MW	无功功率 /Mvar	热电比	单位生产成本元 /MWh
热电联产(CHP)	0.9	0.5	1.5	52
燃气轮机(GT)	1.6	1	—	65
热泵(HP1)	1.2	—	3	分时电价(图6)
热泵(HP2)	0.8	—	3	分时电价(图6)

场景	购电、气成本	与产消者交易成本	备用成本	储能建设日均成本	运行成本	综合成本
含电 /热储能	3403.39	787.08	600.13	113.04	4790.59	4903.63
不含电 /热储能	3679.48	992.33	632.28	0	5304.09	5304.09

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