Module block fault locating strategy for large-scale photovoltaic arrays

doi:10.1016/j.enconman.2020.112898

	Module block fault locating strategy for large-scale photovoltaic arrays
	Pei, Tingting 1,2; Li, Li 1; Zhang, Jiangfeng 3; Hao, Xiaohong 2
刊名	Energy Conversion and Management
	2020-06-15
卷号	214
关键词	Location Photovoltaic cells Well testing Fault monitoring Grid-connected photovoltaic system Implementation cost Large-scale arrays MATLAB /simulink Photovoltaic arrays Photovoltaic systems Terminal voltages
ISSN号	01968904
DOI	10.1016/j.enconman.2020.112898
英文摘要	In practical grid-connected photovoltaic systems, faulty modules for small-scale photovoltaic arrays need to be accurately located, while the same strategy to locate each faulty module for large-scale arrays would imply high investment cost due to a large number of sensors needed. Therefore, to reduce the number of sensors and save fault monitoring investment, it suffices to identify where fault happens in a module block, which consists of several modules connected in series. For this purpose, this paper proposes a fault-locating strategy to identify faulty module blocks for large-scale arrays, where voltage sensors are deployed by differentiating the parity of string numbers in the array to acquire the terminal voltages of the module blocks between adjacent strings, and the fault locating rules for open circuit, short circuit, degradation and partial shading faults are formulated. With the help of MATLAB/Simulink platform, the proposed strategy is tested in one small-size array and two large-scale arrays, and the testing results demonstrate that the proposed strategy can locate the single fault case, multiple faults of single-type, as well as mixed faults of different sub-arrays. To summarize, the proposed fault-locating method has higher locating accuracy, lower implementation cost and wiring complexity, and is easily integrable with existing photovoltaic systems. © 2020 Elsevier Ltd
WOS研究方向	Thermodynamics ; Energy & Fuels ; Mechanics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000534066900022
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115665]
专题	电气工程与信息工程学院
作者单位	1.School of Electrical and Data Engineering, University of Technology Sydney, NSW, Australia; 2.College of Electrical and Information Engineering, Key Laboratory of Gansu Advanced Control for Industrial Processes, National Demonstration Center for Experimental Electrical and Control Engineering Education, Lanzhou University of Technology, Lanzhou, China; 3.Department of Automotive Engineering, Clemson University, SC, United States
推荐引用方式 GB/T 7714	Pei, Tingting,Li, Li,Zhang, Jiangfeng,et al. Module block fault locating strategy for large-scale photovoltaic arrays[J]. Energy Conversion and Management,2020,214.
APA	Pei, Tingting,Li, Li,Zhang, Jiangfeng,&Hao, Xiaohong.(2020).Module block fault locating strategy for large-scale photovoltaic arrays.Energy Conversion and Management,214.
MLA	Pei, Tingting,et al."Module block fault locating strategy for large-scale photovoltaic arrays".Energy Conversion and Management 214(2020).