Virtual Inertia Estimation Method of DFIG-based Wind Farm with Additional Frequency Control

With the increasing penetration of wind power, using wind turbines to participate in the frequency regulation to support power system has become a clear consensus. To accurately quantify the inertia provided by the doubly-fed induction generator (DFIG) based wind farm, the frequency response model o...

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Published inJournal of modern power systems and clean energy Vol. 9; no. 5; pp. 1076 - 1087
Main Authors Pengwei Chen, Chenchen Qi, Xin Chen
Format Journal Article
LanguageEnglish
Published IEEE 01.09.2021
Subjects
Online AccessGet full text
ISSN2196-5420
2196-5625
2196-5420
DOI10.35833/mpce.2020.000908

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Abstract With the increasing penetration of wind power, using wind turbines to participate in the frequency regulation to support power system has become a clear consensus. To accurately quantify the inertia provided by the doubly-fed induction generator (DFIG) based wind farm, the frequency response model of DFIG with additional frequency control is established, and then by using Routh approximation, the explicit expression of the virtual moment of inertia is derived for the DFIG grid-connected system. To further enhance the availability of the expression, an estimation method is proposed based on the matrix pencil method and the least squares algorithm for estimating the virtual moment of inertia provided by the wind farm. Finally, numerical results tested by a DFIG grid-connected system and a modified IEEE 30-bus system verify the derived expression of the virtual moment of inertia and the proposed estimation method.
AbstractList With the increasing penetration of wind power, using wind turbines to participate in the frequency regulation to support power system has become a clear consensus. To accurately quantify the inertia provided by the doubly-fed induction generator (DFIG) based wind farm, the frequency response model of DFIG with additional frequency control is established, and then by using Routh approximation, the explicit expression of the virtual moment of inertia is derived for the DFIG grid-connected system. To further enhance the availability of the expression, an estimation method is proposed based on the matrix pencil method and the least squares algorithm for estimating the virtual moment of inertia provided by the wind farm. Finally, numerical results tested by a DFIG grid-connected system and a modified IEEE 30-bus system verify the derived expression of the virtual moment of inertia and the proposed estimation method.
Author Chenchen Qi
Xin Chen
Pengwei Chen
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Snippet With the increasing penetration of wind power, using wind turbines to participate in the frequency regulation to support power system has become a clear...
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SubjectTerms additional frequency control
Doubly-fed induction generator (DFIG)
least squares algorithm
matrix pencil method
virtual moment of inertia
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Title Virtual Inertia Estimation Method of DFIG-based Wind Farm with Additional Frequency Control
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