Frequency support control of two-stage photovoltaic grid-connected system based on virtual governor

doi:10.1049/rpg2.12161

	Frequency support control of two-stage photovoltaic grid-connected system based on virtual governor
	Li, Hui 3; Tan, Hongtao 3; Bao, Guangqing 1; Xie, Xiangjie 3; Chai, ZhaoSen 3; Yang, Tian 3; Ding, Kun 2
刊名	IET RENEWABLE POWER GENERATION
	2021
卷号	15 期号:10 页码:2257-2269
关键词	DC-DC converters Governors Iterative methods MATLAB Microgrids Virtual reality Control strategies Frequency deviation Iterative calculation Maximum power point Photovoltaic energy Photovoltaic grid connected system Reference voltages Simulation model
ISSN号	1752-1416
DOI	10.1049/rpg2.12161
英文摘要	Given the urgent need for photovoltaic (PV) energy to participate in grid frequency regulation, a control strategy of the DC/DC converter of a two-stage PV system based on the virtual governor (PV-VG) is proposed in this paper. First, a one-step PV maximum power point estimation (MPPE) method is proposed, which can obtain the reference voltage corresponding to the maximum power point and the power deload point, and some complex iterative calculations and sampling processes are circumvented. Then, based on the constant DC bus voltage of the two-stage PV system, the coupling mathematical model of boost circuit duty cycle (D) and PV output power is established. According to the power setting and frequency deviation, the D is taken as the direct control target to reflect the direct coupling characteristics of D and grid frequency (f-D) so that the PV system can adjust the output power reference independently according to the grid frequency deviation. Finally, a simulation model is built in Matlab/Simulink and RT-LAB, and the results show that the accuracy of the proposed one-step MPPE method is over 99.8%, and the correctness and efficiency of the PV-VG control strategy are verified in some case study.
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels ; Engineering
语种	英语
出版者	INST ENGINEERING TECHNOLOGY-IET
WOS记录号	WOS:000632618600001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148307]
专题	电气工程与信息工程学院
作者单位	1.Lanzhou Univ Technol, Informat Engn & Coll Elect, Lanzhou, Gansu, Peoples R China; 2.State Grid GanSu Elect Power Co, Lanzhou, Gansu, Peoples R China 3.Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China;
推荐引用方式 GB/T 7714	Li, Hui,Tan, Hongtao,Bao, Guangqing,et al. Frequency support control of two-stage photovoltaic grid-connected system based on virtual governor[J]. IET RENEWABLE POWER GENERATION,2021,15(10):2257-2269.
APA	Li, Hui.,Tan, Hongtao.,Bao, Guangqing.,Xie, Xiangjie.,Chai, ZhaoSen.,...&Ding, Kun.(2021).Frequency support control of two-stage photovoltaic grid-connected system based on virtual governor.IET RENEWABLE POWER GENERATION,15(10),2257-2269.
MLA	Li, Hui,et al."Frequency support control of two-stage photovoltaic grid-connected system based on virtual governor".IET RENEWABLE POWER GENERATION 15.10(2021):2257-2269.