Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDC

In recent years, the low-frequency oscillation (LFO) problem has become increasingly significant with rapid increase in the size of AC/DC interconnected power system containing large-scale wind power. This article aims to conduct the LFO analysis when an offshore wind farm is integrated into the AC...

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Main Authors: Zhongrui Nie, Libao Shi, Yue Zhao, Yixin Ni
Format: Article
Language:English
Published: Wiley 2019-04-01
Series:The Journal of Engineering
Subjects:
Online Access:https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8534
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author Zhongrui Nie
Libao Shi
Yue Zhao
Yixin Ni
author_facet Zhongrui Nie
Libao Shi
Yue Zhao
Yixin Ni
author_sort Zhongrui Nie
collection DOAJ
description In recent years, the low-frequency oscillation (LFO) problem has become increasingly significant with rapid increase in the size of AC/DC interconnected power system containing large-scale wind power. This article aims to conduct the LFO analysis when an offshore wind farm is integrated into the AC power system through module multilevel converter (MMC)-based high-voltage direct current (HVDC). First, the basic mathematical models including the MMC with detailed control strategy and the permanent magnet synchronous generator (PMSG) are described. The eigenvalue analysis is then applied to conduct the LFO study. An interconnected AC/DC test system with a wind farm connected though the MMC-based HVDC transmission line is designed as benchmark. To validate the analysis results, the detailed simulation models built under the PSCAD/EMTDC^TM environment together with the Prony analysis are carried out. Different simulation scenarios involving the changes of point of common coupling (PCC), wind speed, length of transmission line, and wind penetration level are elaborately studied. Some meaningful conclusions are drawn to provide basic foundation for the future design of damping controller to mitigate LFO.
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spelling doaj.art-1b46401ea3c449c5a9789e308233ce572022-12-21T23:01:28ZengWileyThe Journal of Engineering2051-33052019-04-0110.1049/joe.2018.8534JOE.2018.8534Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDCZhongrui Nie0Libao Shi1Yue Zhao2Yixin Ni3National Key Laboratory of Power Systems in Shenzhen (Graduate School at Shenzhen, Tsinghua University)National Key Laboratory of Power Systems in Shenzhen (Graduate School at Shenzhen, Tsinghua University)National Key Laboratory of Power Systems in Shenzhen (Graduate School at Shenzhen, Tsinghua University)National Key Laboratory of Power Systems in Shenzhen (Graduate School at Shenzhen, Tsinghua University)In recent years, the low-frequency oscillation (LFO) problem has become increasingly significant with rapid increase in the size of AC/DC interconnected power system containing large-scale wind power. This article aims to conduct the LFO analysis when an offshore wind farm is integrated into the AC power system through module multilevel converter (MMC)-based high-voltage direct current (HVDC). First, the basic mathematical models including the MMC with detailed control strategy and the permanent magnet synchronous generator (PMSG) are described. The eigenvalue analysis is then applied to conduct the LFO study. An interconnected AC/DC test system with a wind farm connected though the MMC-based HVDC transmission line is designed as benchmark. To validate the analysis results, the detailed simulation models built under the PSCAD/EMTDC^TM environment together with the Prony analysis are carried out. Different simulation scenarios involving the changes of point of common coupling (PCC), wind speed, length of transmission line, and wind penetration level are elaborately studied. Some meaningful conclusions are drawn to provide basic foundation for the future design of damping controller to mitigate LFO.https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8534oscillationssynchronous generatorsHVDC power convertorswind power plantspermanent magnet generatorseigenvalues and eigenfunctionsoffshore installationsAC-DC power convertorsvoltage-source convertorsmodule multilevel converter-based high-voltagepermanent magnet synchronous generatoreigenvalue analysisLFO studyinterconnected AC/DC test systemMMC-based HVDC transmission lineProny analysiswind penetration levellow-frequency oscillation analysisAC/DC systemoffshore wind farm integrationlow-frequency oscillation problemlarge-scale wind powerLFO analysisAC power system
spellingShingle Zhongrui Nie
Libao Shi
Yue Zhao
Yixin Ni
Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDC
The Journal of Engineering
oscillations
synchronous generators
HVDC power convertors
wind power plants
permanent magnet generators
eigenvalues and eigenfunctions
offshore installations
AC-DC power convertors
voltage-source convertors
module multilevel converter-based high-voltage
permanent magnet synchronous generator
eigenvalue analysis
LFO study
interconnected AC/DC test system
MMC-based HVDC transmission line
Prony analysis
wind penetration level
low-frequency oscillation analysis
AC/DC system
offshore wind farm integration
low-frequency oscillation problem
large-scale wind power
LFO analysis
AC power system
title Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDC
title_full Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDC
title_fullStr Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDC
title_full_unstemmed Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDC
title_short Low-frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC-based HVDC
title_sort low frequency oscillation analysis of ac dc system with offshore wind farm integration via mmc based hvdc
topic oscillations
synchronous generators
HVDC power convertors
wind power plants
permanent magnet generators
eigenvalues and eigenfunctions
offshore installations
AC-DC power convertors
voltage-source convertors
module multilevel converter-based high-voltage
permanent magnet synchronous generator
eigenvalue analysis
LFO study
interconnected AC/DC test system
MMC-based HVDC transmission line
Prony analysis
wind penetration level
low-frequency oscillation analysis
AC/DC system
offshore wind farm integration
low-frequency oscillation problem
large-scale wind power
LFO analysis
AC power system
url https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8534
work_keys_str_mv AT zhongruinie lowfrequencyoscillationanalysisofacdcsystemwithoffshorewindfarmintegrationviammcbasedhvdc
AT libaoshi lowfrequencyoscillationanalysisofacdcsystemwithoffshorewindfarmintegrationviammcbasedhvdc
AT yuezhao lowfrequencyoscillationanalysisofacdcsystemwithoffshorewindfarmintegrationviammcbasedhvdc
AT yixinni lowfrequencyoscillationanalysisofacdcsystemwithoffshorewindfarmintegrationviammcbasedhvdc