Assessment of Interactive Stability between Grid and Series Structure Micro-grid Based on GBDT

doi:10.16339/j.cnki.hdxbzkb.2021.02.011

	Assessment of Interactive Stability between Grid and Series Structure Micro-grid Based on GBDT
	Zhang, Jinjing 2; Wang, Xinggui 2; Song, Wenqin 1; Yang, Weiman 2
刊名	Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences
	2021-02-25
卷号	48 期号:2 页码:87-95
关键词	Decision making Decision trees Natural frequencies Quality control Stability Carrier phase-shifted SPWM Complex mechanisms Feature construction Generalization performance Grid-connected operation Multi-classification Power-quality analysis Stability analysis
ISSN号	1674-2974
DOI	10.16339/j.cnki.hdxbzkb.2021.02.011
英文摘要	Due to the complex mechanism of the effect of micro-source switching on interactive stability between the grid and the micro-grid with series micro-source inverters, traditional methods were difficult to model and can't make decision in time. In this study, therefore, an assessment method of interactive stability based on gradient boosting decision tree (GBDT) was proposed. Firstly, the feature functions of the micro-source switching were constructed to extract the position feature which existed typically in series structure system modulated by carrier phase shifted SPWM. The proposed functions can reduce the feature dimension, thus improving the efficiency of assessment model and making the model migration capable by feature fitting. Secondly, the assessment of interactive stability was treated as a multi-classification task and the resonant frequency bands of instable samples were predicted. Thus, the different strategy can be taken according to the classification and prediction. Finally, the tests on validation data sets and new test sets verified the correctness and effectiveness of the feature construction functions which can provide references for the similar series structure system in power quality analysis, optimal operation and other aspects. The results also verified the high generalization performance and practicality of the proposed assessment model, which can provide a new tool for on-line stability analysis and decision-making of grid-connected operation systems. © 2021, Editorial Department of Journal of Hunan University. All right reserved.
语种	中文
出版者	Hunan University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147726]
专题	电气工程与信息工程学院
作者单位	1.State Grid Gansu Electric Power Corporation Economical & Technical Research Institute, Lanzhou; 730050, China 2.School of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Zhang, Jinjing,Wang, Xinggui,Song, Wenqin,et al. Assessment of Interactive Stability between Grid and Series Structure Micro-grid Based on GBDT[J]. Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences,2021,48(2):87-95.
APA	Zhang, Jinjing,Wang, Xinggui,Song, Wenqin,&Yang, Weiman.(2021).Assessment of Interactive Stability between Grid and Series Structure Micro-grid Based on GBDT.Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences,48(2),87-95.
MLA	Zhang, Jinjing,et al."Assessment of Interactive Stability between Grid and Series Structure Micro-grid Based on GBDT".Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences 48.2(2021):87-95.