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Volume 14
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10.3390/electronics14030501
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

A New Impedance Measurement Method for Wind Farms Considering the Influence of Background Harmonics

by
Teng Xue
,
Ze Wei
,
Xiong Du
and
Junliang Liu
*
Department of Electrical Engineering, Chongqing University, Shapingba District, Chongqing 400044, China
*
Author to whom correspondence should be addressed.
Electronics 2025, 14(3), 501; https://doi.org/10.3390/electronics14030501
Submission received: 23 December 2024 / Revised: 21 January 2025 / Accepted: 24 January 2025 / Published: 26 January 2025
(This article belongs to the Topic Integration of Renewable Energy)
Versions Notes

Abstract

The impedance of renewable energy stations is crucial for determining system stability. Typically, the impedance is obtained using a measurement method. However, in actual operation, background harmonics at the point of common coupling (PCC) affect the accuracy of the impedance measurement results, which could cause unstable analysis results. Therefore, this paper first analyzes the impact of background harmonics at the PCC on impedance measurement. Then, a novel impedance measurement method, based on the adaptive adjustment coefficient, is proposed. In addition, the design process for the coefficient is presented. By adaptively adjusting the amplitude of the injected perturbation using this coefficient, the proposed measurement method mitigates the effect of background harmonics on the impedance measurement. Finally, simulation results are given to validate the effectiveness of the proposed method.
Keywords: impedance measurement; background harmonics; current injection; wind farm impedance measurement; background harmonics; current injection; wind farm

Share and Cite

MDPI and ACS Style

Xue, T.; Wei, Z.; Du, X.; Liu, J. A New Impedance Measurement Method for Wind Farms Considering the Influence of Background Harmonics. Electronics 2025, 14, 501. https://doi.org/10.3390/electronics14030501

AMA Style

Xue T, Wei Z, Du X, Liu J. A New Impedance Measurement Method for Wind Farms Considering the Influence of Background Harmonics. Electronics. 2025; 14(3):501. https://doi.org/10.3390/electronics14030501

Chicago/Turabian Style

Xue, Teng, Ze Wei, Xiong Du, and Junliang Liu. 2025. "A New Impedance Measurement Method for Wind Farms Considering the Influence of Background Harmonics" Electronics 14, no. 3: 501. https://doi.org/10.3390/electronics14030501

APA Style

Xue, T., Wei, Z., Du, X., & Liu, J. (2025). A New Impedance Measurement Method for Wind Farms Considering the Influence of Background Harmonics. Electronics, 14(3), 501. https://doi.org/10.3390/electronics14030501

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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