Assessment of harmonic emission level considering influence of harmonic impedance of wind farm

被引：0
|
作者：
Tan P. [1 ]
Yang H. [1 ]
Ma X. [1 ]
Xu F. [1 ]
机构：
[1] College of Electrical Engineering and Information Technology, Sichuan University, Chengdu
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Aggregated equivalent; Complex linear regression; Harmonic emission level; Harmonic impedance of wind farm side; Wind power;
D O I：
10.16081/j.issn.1006-6047.2019.04.025
中图分类号：
学科分类号：
摘要：
Wind turbine filter and reactive power compensation device lead to the result that the harmonic impedance of wind farm is not much larger than that of the utility, so the influence of harmonic impedance of wind farm should not be neglected when calculating harmonic emission value of wind farm. A method based on the improved complex linear regression equation is proposed for assessing the harmonic emission value of wind farm. The harmonic current components of wind farm side, which are not related with the regression equation coefficients, are separated from the harmonic voltage of PCC(Point of Common Coupling). Accordingly, a complex linear regression equation is established. The utility harmonic impedance is calculated by complex least square method. Considering the harmonic impedance of wind farm, the harmonic emission value is calculated. For the topology variability of wind farm feeder network, an equivalent and aggregation method for feeder network is proposed, by which, the hybrid feeder network is aggregated into T-shaped network to calculate the harmonic impedance of wind farm. The error marginal effect of dispersion parameters is used to analyze error. Simulation and measured data verify the effectiveness of the proposed method. © 2019, Electric Power Automation Equipment Press. All right reserved.
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页码：167 / 173
页数：6
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