A Study of Reducing Harmonic Instability and Reasonable  Problems in PMSG based Wind Forms

Molugu Shruthi; Gangadhara Swamy

Title:
A Study of Reducing Harmonic Instability and Reasonable Problems in PMSG based Wind Forms

Authors:
Gangadhara Swamy | Molugu Shruthi
DOI:
https://doi.org/10.31142/ijtsrd7028

Cite This Article :

Gangadhara Swamy | Molugu Shruthi "A Study of Reducing Harmonic Instability and Reasonable Problems in PMSG based Wind Forms" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1, December 2017, pp.512-516, URL: https://www.ijtsrd.com/papers/ijtsrd7028.pdf

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Abstract :
Unlike conventional power systems where harmonic resonances are coming from passive inductive and capacitive elements, large-scale power electronic systems like wind farms present a more complex system, where the fast dynamics of the power electronic converters may present an inductive or capacitive behavior. Therefore, the interactions between the fast controllers of the power converters and the passive elements may lead to harmonic instability and new resonances at various frequencies. This paper presents an optimum design technique for the Wind Turbine (WT) inner controllers in a PMSG based wind farm in order to reduce the number of resonances and to mitigate harmonic instability. In the approach, a PMSG based wind farm is modeled as a Multi-Input Multi-Output (MIMO) dynamic system by modeling the high bandwidth control loops of the power converters. Resonance frequencies and oscillatory modes of the wind farm are identified based on the MIMO matrix. Afterwards, a multi-objective optimization procedure based on Genetic Algorithm (GA) is proposed to put the oscillatory modes of the wind farm in suitable locations in order to minimize the number of the resonances and to guarantee a stable operation of the wind farm. A 400-MW wind farm is studied in the PSCAD/EMTDC software environment to confirm the validity of the proposed optimum design technique.

Keywords :
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Publication Details:

Unique Identification Number : IJTSRD7028

Published In : Volume-2 | Issue-1, December 2017

Page Number(s) : 512-516

Publisher Name : IJTSRD | www.ijtsrd.com | E-ISSN 2456-6470

Copyright © 2019 by author(s) and International Journal of Trend in Scientific Research and Development Journal. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (http://creativecommons.org/licenses/by/4.0)

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