Abstract
Modeling high-dimension dependence is a challenging problem since it involves too many parameters. In this paper, aquasi-Monte Carlo (QMC) method based probabilistic load flow computation algorithm, which uses truncated regular vine copula and considers high-dimension dependence of wind powers, is proposed. Firstly, the regular vine copulas, which use bivariate copulas as building blocks, are used to construct the primary high dimensional dependence. Then, truncation technology is adopted to reduce the computation burden and the memory consumption caused by the rapidly increased parameters number of input variables. Meanwhile, the nonparametric kernel estimation is used to estimate the wind speed marginal distributions and the bandwidth of kernel function is obtained by the direct plug-in method. Further, QMC method is integrated into the probabilistic power flow computation for obtaining the sampled data of input variables. By the numerical simulation experiments on the modified IEEE 118-bus power system, the superiority of the proposed probabilistic load flow computation method is verified.
Original language | English |
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Article number | e12646 |
Journal | International Transactions on Electrical Energy Systems |
Volume | 30 |
Issue number | 12 |
ISSN | 1430-144X |
DOIs | |
Publication status | Published - Dec 2020 |
Bibliographical note
Funding Information:We thank the support from National Key Research and Development Program of China, which number is 2018YFB0905200. These data that support the findings of this study are available at the website of The National Renewable Energy Laboratory (NREL), namely, https://www.nrel.gov/grid/eastern-wind-data.html.
Publisher Copyright:
© 2020 John Wiley & Sons Ltd
Keywords
- copula
- dependence
- kernel estimation
- probabilistic load flow
- quasi-Monte Carlo simulation
- truncation