Robust Optimal Configuration of PV-Energy Storage in Industrial Parks Considering the Uncertainty of Photovoltaics

doi:10.16182/j.issn1004731x.joss.21-0601

Abstract

Abstract:

Research on using rooftop resources in industrial parks to develop photovoltaic projects and reasonable configuration of energy storage will help improve the park's energy economy. To obtain the optimal PV-storage configuration scheme, an industrial park with three types of load demand, namely, cold, heat and electricity, is selected, and a robust optimization allocation model of park PV-storage is established with optimal operating profit as the objective function, considering the increased cost of power purchase caused by the PV uncertainty. The model uses the box uncertainty set in robust optimization for PV intensity, and linearizes the model using pairwise optimization theory. The analysis shows that reasonable allocation of PV-storage can effectively reduce the park operation cost, and robust optimization can increase system investment cost while reducing the risk of increasing park power purchase cost due to the uncertainty of PV output, and exchange the conservativeness of income for higher certainty.

Key words: industrial park, robust optimization, energy storage allocation, PV allocation

CLC Number:

Guiting Xue, Boya Shan, Ti Wang, Xiao Wang, Wei Xing, Weiqing Sun. Robust Optimal Configuration of PV-Energy Storage in Industrial Parks Considering the Uncertainty of Photovoltaics[J]. Journal of System Simulation, 2022, 34(11): 2396-2405.

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机组	a	b	c	/kW	/kW
1	5.635	55×10^-3	40×10^-6	3 500	400
2	5.635	55×10^-3	40×10^-6	3 500	400
3	2.052	58×10^-3	46×10^-6	2 000	200

时段	时间段	购电电价(元/( kW·h ))
峰时段	10:00—15:00, 18:00—21:00	1.271 0
平时段	07:00—10:00, 15:00—18:00, 21:00—23:00	0.752 3
谷时段	23:00—07:00	0.284 9

参数名称	符号	数值
单位容量价格(元/kW)		5 600
单位容量年运行成本(元/kW)		77
使用寿命(年)		20
贴现率		0.05

参数名称	符号	数值
单位功率价格(元/kW)		900
单位容量价格(元/( kW·h ))		1600
单位容量年运行成本(元/( kW·h ))		5.16
使用寿命(年)		10
贴现率		0.05
充电效率		0.95
放电效率		0.95
荷电状态下限		0.1
荷电状态上限		0.9
最大充电功率/kW		0.25 E_max
最大放电功率/kW		0.25 E_max

季节	制热费用	制冷费用
夏季	281.42	816.30
冬季	630.18	741.09
过渡季	560.19	1 487.90