Real-World 20-Hz IBR Subsynchronous Oscillations: Signatures and Mechanism Analysis

Lingling Fan; Zhixin Miao; Shahil Shah; Yunzhi Cheng; Jonathan Rose; Shun-Hsien Huang; Bikash Pal; Xiarong Xie; Nilesh Modi; Song Wang; Songzhe Zhu

doi:10.1109/TEC.2022.3206795

Real-World 20-Hz IBR Subsynchronous Oscillations: Signatures and Mechanism Analysis

Lingling Fan, Zhixin Miao, Shahil Shah, Yunzhi Cheng, Jonathan Rose, Shun-Hsien Huang, Bikash Pal, Xiarong Xie, Nilesh Modi, Song Wang, Songzhe Zhu

Power Systems Engineering

Research output: Contribution to journal › Article › peer-review

35 Scopus Citations

Abstract

This article provides analyses of subsynchronous oscillations associated with solar photovoltaics (PVs) observed in real world. All have oscillation frequencies at approximately 20 Hz in voltage and current magnitudes. On the other hand, in phase voltage and current, the oscillations show very different signatures. Through constructing simplified linear models and conducting sensitivity analysis, we are able to associate dynamic phenomena with the underlying mechanism and speculate the possible causes of the 20-Hz oscillations. The analysis results have all been validated via simulation results from electromagnetic transient (EMT) test beds constructed in MATLAB/Simscape.

Original language	American English
Pages (from-to)	2863-2873
Number of pages	11
Journal	IEEE Transactions on Energy Conversion
Volume	37
Issue number	4
DOIs	https://doi.org/10.1109/TEC.2022.3206795 https://doi.org/10.1109/TEC.2022.3206795
State	Published - 2022

Bibliographical note

Publisher Copyright:
© 1986-2012 IEEE.

NREL Publication Number

NREL/JA-5D00-82904

Keywords

Inverter-based resources
subsynchronous oscillations
weak grids

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title = "Real-World 20-Hz IBR Subsynchronous Oscillations: Signatures and Mechanism Analysis",

abstract = "This article provides analyses of subsynchronous oscillations associated with solar photovoltaics (PVs) observed in real world. All have oscillation frequencies at approximately 20 Hz in voltage and current magnitudes. On the other hand, in phase voltage and current, the oscillations show very different signatures. Through constructing simplified linear models and conducting sensitivity analysis, we are able to associate dynamic phenomena with the underlying mechanism and speculate the possible causes of the 20-Hz oscillations. The analysis results have all been validated via simulation results from electromagnetic transient (EMT) test beds constructed in MATLAB/Simscape.",

keywords = "Inverter-based resources, subsynchronous oscillations, weak grids",

author = "Lingling Fan and Zhixin Miao and Shahil Shah and Yunzhi Cheng and Jonathan Rose and Shun-Hsien Huang and Bikash Pal and Xiarong Xie and Nilesh Modi and Song Wang and Songzhe Zhu",

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language = "American English",

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AU - Fan, Lingling

AU - Miao, Zhixin

AU - Shah, Shahil

AU - Cheng, Yunzhi

AU - Rose, Jonathan

AU - Huang, Shun-Hsien

AU - Pal, Bikash

AU - Xie, Xiarong

AU - Modi, Nilesh

AU - Wang, Song

AU - Zhu, Songzhe

PY - 2022

Y1 - 2022

N2 - This article provides analyses of subsynchronous oscillations associated with solar photovoltaics (PVs) observed in real world. All have oscillation frequencies at approximately 20 Hz in voltage and current magnitudes. On the other hand, in phase voltage and current, the oscillations show very different signatures. Through constructing simplified linear models and conducting sensitivity analysis, we are able to associate dynamic phenomena with the underlying mechanism and speculate the possible causes of the 20-Hz oscillations. The analysis results have all been validated via simulation results from electromagnetic transient (EMT) test beds constructed in MATLAB/Simscape.

AB - This article provides analyses of subsynchronous oscillations associated with solar photovoltaics (PVs) observed in real world. All have oscillation frequencies at approximately 20 Hz in voltage and current magnitudes. On the other hand, in phase voltage and current, the oscillations show very different signatures. Through constructing simplified linear models and conducting sensitivity analysis, we are able to associate dynamic phenomena with the underlying mechanism and speculate the possible causes of the 20-Hz oscillations. The analysis results have all been validated via simulation results from electromagnetic transient (EMT) test beds constructed in MATLAB/Simscape.

KW - Inverter-based resources

KW - subsynchronous oscillations

KW - weak grids

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SP - 2863

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JO - IEEE Transactions on Energy Conversion

JF - IEEE Transactions on Energy Conversion

IS - 4

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Real-World 20-Hz IBR Subsynchronous Oscillations: Signatures and Mechanism Analysis

Abstract

Bibliographical note

NREL Publication Number

Keywords

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