Efficacy Analysis of Power Swing Blocking and Out-of-step Tripping Protection for Grid-Following-VSC Systems

Yongxin Xiong; Heng Wu; Xiongfei Wang

doi:10.1109/eGrid58358.2023.10380946

Efficacy Analysis of Power Swing Blocking and Out-of-step Tripping Protection for Grid-Following-VSC Systems

^*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

3 Citations (Scopus)

Abstract

Power swings can occur in power systems after major disturbances, which may even lead to system collapse. Different from synchronous generators (SGs), the power swing dynamics of grid-following (GFL) voltage-source converters (VSCs) are highly dependent on their grid-synchronization control, which may impact the efficacy of traditional power swing detection methods. This paper thus presents an in-depth analysis of the effectiveness of legacy power swing blocking (PSB) and out-of-step tripping (OST) functions in GFL-VSC systems. It is found that the power swing dynamics of GFL-VSCs are characterized by the output angle of the phase-locked loop (PLL) \delta{\mathrm{P}\mathrm{L}\mathrm{L}}, and the power factor angle \varphi. This is fundamentally different from SG-based systems, where the power swing can be predicted by the physical angle difference between sources, i.e., δs. Consequently, the legacy setting principles for power swing detection may not work for GFL-VSC systems and even lead to maloperation. PSCAD/EMTDC simulations are performed to validate the correctness of the theoretical analysis.

Original language	English
Title of host publication	2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023
Number of pages	5
Publisher	IEEE (Institute of Electrical and Electronics Engineers)
Publication date	2023
Article number	10380946
ISBN (Print)	979-8-3503-2701-4
ISBN (Electronic)	979-8-3503-2700-7
DOIs	https://doi.org/10.1109/eGrid58358.2023.10380946
Publication status	Published - 2023
Event	8th IEEE Workshop on the Electronic Grid, eGRID 2023 - Karlsruhe, Germany Duration: 16 Oct 2023 → 18 Oct 2023

Conference

Conference	8th IEEE Workshop on the Electronic Grid, eGRID 2023
Country/Territory	Germany
City	Karlsruhe
Period	16/10/2023 → 18/10/2023

Series	IEEE Workshop on the Electronic Grid (eGRID)
ISSN	2831-3658

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

grid-following
out-of-step tripping
phase-locked loop
power swing blocking
Voltage source converters

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@inproceedings{2ffb79f93e864c8aa9f3448dbfd640fe,

title = "Efficacy Analysis of Power Swing Blocking and Out-of-step Tripping Protection for Grid-Following-VSC Systems",

abstract = "Power swings can occur in power systems after major disturbances, which may even lead to system collapse. Different from synchronous generators (SGs), the power swing dynamics of grid-following (GFL) voltage-source converters (VSCs) are highly dependent on their grid-synchronization control, which may impact the efficacy of traditional power swing detection methods. This paper thus presents an in-depth analysis of the effectiveness of legacy power swing blocking (PSB) and out-of-step tripping (OST) functions in GFL-VSC systems. It is found that the power swing dynamics of GFL-VSCs are characterized by the output angle of the phase-locked loop (PLL) \delta{\mathrm{P}\mathrm{L}\mathrm{L}}, and the power factor angle \varphi. This is fundamentally different from SG-based systems, where the power swing can be predicted by the physical angle difference between sources, i.e., δs. Consequently, the legacy setting principles for power swing detection may not work for GFL-VSC systems and even lead to maloperation. PSCAD/EMTDC simulations are performed to validate the correctness of the theoretical analysis.",

keywords = "grid-following, out-of-step tripping, phase-locked loop, power swing blocking, Voltage source converters",

author = "Yongxin Xiong and Heng Wu and Xiongfei Wang",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 8th IEEE Workshop on the Electronic Grid, eGRID 2023 ; Conference date: 16-10-2023 Through 18-10-2023",

year = "2023",

doi = "10.1109/eGrid58358.2023.10380946",

language = "English",

isbn = "979-8-3503-2701-4",

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Xiong, Y, Wu, H & Wang, X 2023, Efficacy Analysis of Power Swing Blocking and Out-of-step Tripping Protection for Grid-Following-VSC Systems. in 2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023., 10380946, IEEE (Institute of Electrical and Electronics Engineers), IEEE Workshop on the Electronic Grid (eGRID), 8th IEEE Workshop on the Electronic Grid, eGRID 2023, Karlsruhe, Germany, 16/10/2023. https://doi.org/10.1109/eGrid58358.2023.10380946

Efficacy Analysis of Power Swing Blocking and Out-of-step Tripping Protection for Grid-Following-VSC Systems. / Xiong, Yongxin; Wu, Heng ; Wang, Xiongfei.
2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023. IEEE (Institute of Electrical and Electronics Engineers), 2023. 10380946 (IEEE Workshop on the Electronic Grid (eGRID)).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Efficacy Analysis of Power Swing Blocking and Out-of-step Tripping Protection for Grid-Following-VSC Systems

AU - Xiong, Yongxin

AU - Wu, Heng

AU - Wang, Xiongfei

PY - 2023

Y1 - 2023

N2 - Power swings can occur in power systems after major disturbances, which may even lead to system collapse. Different from synchronous generators (SGs), the power swing dynamics of grid-following (GFL) voltage-source converters (VSCs) are highly dependent on their grid-synchronization control, which may impact the efficacy of traditional power swing detection methods. This paper thus presents an in-depth analysis of the effectiveness of legacy power swing blocking (PSB) and out-of-step tripping (OST) functions in GFL-VSC systems. It is found that the power swing dynamics of GFL-VSCs are characterized by the output angle of the phase-locked loop (PLL) \delta{\mathrm{P}\mathrm{L}\mathrm{L}}, and the power factor angle \varphi. This is fundamentally different from SG-based systems, where the power swing can be predicted by the physical angle difference between sources, i.e., δs. Consequently, the legacy setting principles for power swing detection may not work for GFL-VSC systems and even lead to maloperation. PSCAD/EMTDC simulations are performed to validate the correctness of the theoretical analysis.

AB - Power swings can occur in power systems after major disturbances, which may even lead to system collapse. Different from synchronous generators (SGs), the power swing dynamics of grid-following (GFL) voltage-source converters (VSCs) are highly dependent on their grid-synchronization control, which may impact the efficacy of traditional power swing detection methods. This paper thus presents an in-depth analysis of the effectiveness of legacy power swing blocking (PSB) and out-of-step tripping (OST) functions in GFL-VSC systems. It is found that the power swing dynamics of GFL-VSCs are characterized by the output angle of the phase-locked loop (PLL) \delta{\mathrm{P}\mathrm{L}\mathrm{L}}, and the power factor angle \varphi. This is fundamentally different from SG-based systems, where the power swing can be predicted by the physical angle difference between sources, i.e., δs. Consequently, the legacy setting principles for power swing detection may not work for GFL-VSC systems and even lead to maloperation. PSCAD/EMTDC simulations are performed to validate the correctness of the theoretical analysis.

KW - grid-following

KW - out-of-step tripping

KW - phase-locked loop

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M3 - Article in proceeding

AN - SCOPUS:85183583150

SN - 979-8-3503-2701-4

T3 - IEEE Workshop on the Electronic Grid (eGRID)

BT - 2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023

PB - IEEE (Institute of Electrical and Electronics Engineers)

T2 - 8th IEEE Workshop on the Electronic Grid, eGRID 2023

Y2 - 16 October 2023 through 18 October 2023

ER -

Efficacy Analysis of Power Swing Blocking and Out-of-step Tripping Protection for Grid-Following-VSC Systems

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