Global Sensitivity Analysis for Islanded Microgrid Based on Sparse Polynomial Chaos Expansion

被引：0
|
作者：
Wang H. [1 ]
Yan Z. [1 ]
Xu X. [1 ]
He K. [1 ]
机构：
[1] Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai Jiao Tong University, Shanghai
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2019年 / 43卷 / 10期
关键词：
Energy storage system configuration; Global sensitivity analysis; Islanded microgrid; Sparse polynomial chaos expansion; Uncertainty;
D O I：
10.7500/AEPS20180625006
中图分类号：
学科分类号：
摘要：
As the penetration rate of renewable energy sources and the proportion of electric vehicles continue to increase, the uncertainties in the operation of microgrids have increased significantly. Accurate assessment of the influence of uncertainties on the status of microgrids will help improve the safe and stable operation of the system. Considering the uncertainties of source and loads, the probabilistic power flow model of islanded microgrids is established and the global sensitivity analysis indices are introduced. Then, the global sensitivity analysis of islanded microgrids based on sparse polynomial chaos expansion is proposed. The proposed method is used to accurately and quickly identify critical input random variables that affect the operation status of the system. Through the simulation of a 40-bus islanded microgrid with distributed generators, the accuracy and efficiency of the proposed method are verified. The effect of the source and load uncertainty on the power flow of islanded microgrid is analyzed and the importance ranking of input random variables is given. © 2019 Automation of Electric Power Systems Press.
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页码：44 / 52
页数：8
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