Variable-Inertia Emulation Control Scheme for VSC-HVDC Transmission Systems

Zhipeng Shen; Jiebei Zhu; Leijiao Ge; Siqi Bu; Junbo Zhao; Chi Yung Chung; Xialin Li; Chengshan Wang

doi:10.1109/TPWRS.2021.3088259

Variable-Inertia Emulation Control Scheme for VSC-HVDC Transmission Systems

Zhipeng Shen, Jiebei Zhu, Leijiao Ge, Siqi Bu, Junbo Zhao, Chi Yung Chung, Xialin Li, Chengshan Wang

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

49 Citations (Scopus)

Abstract

This paper proposes a novel variable-inertia emulation control (VIEC) scheme that enables voltage-source-converter based high-voltage DC (VSC-HVDC) transmission systems to flexibly support AC grid frequency stability like synchronous generators. The VIEC scheme allows us to extract the energy from the augmented DC capacitance for inertia emulation by controlling the DC voltage without affecting the stability of the AC system connected on the remote side. In particular, with the proposed VIEC scheme, the inertia time constant can be flexibly emulated and its value can be automatically adjusted according to the rate of change of grid frequency as well as grid frequency deviations. This leads to more effective inertial support across different timescales. Modal analysis is carried out to investigate the impacts of inertia and DC capacitance, and to obtain the optimal control parameters. The effectiveness and advantages of the proposed VIEC scheme are demonstrated on an IEEE benchmark system in the presence of faults and load changes.

Original language	English
Pages (from-to)	629-639
Number of pages	11
Journal	IEEE Transactions on Power Systems
Volume	37
Issue number	1
DOIs	https://doi.org/10.1109/TPWRS.2021.3088259
Publication status	Published - 1 Jan 2022

Keywords

Frequency response
HVDC transmission control
Inertia Control
Power system transients
Pulse width modulated power converters

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

More information

10.1109/TPWRS.2021.3088259

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title = "Variable-Inertia Emulation Control Scheme for VSC-HVDC Transmission Systems",

abstract = "This paper proposes a novel variable-inertia emulation control (VIEC) scheme that enables voltage-source-converter based high-voltage DC (VSC-HVDC) transmission systems to flexibly support AC grid frequency stability like synchronous generators. The VIEC scheme allows us to extract the energy from the augmented DC capacitance for inertia emulation by controlling the DC voltage without affecting the stability of the AC system connected on the remote side. In particular, with the proposed VIEC scheme, the inertia time constant can be flexibly emulated and its value can be automatically adjusted according to the rate of change of grid frequency as well as grid frequency deviations. This leads to more effective inertial support across different timescales. Modal analysis is carried out to investigate the impacts of inertia and DC capacitance, and to obtain the optimal control parameters. The effectiveness and advantages of the proposed VIEC scheme are demonstrated on an IEEE benchmark system in the presence of faults and load changes.",

keywords = "Frequency response, HVDC transmission control, Inertia Control, Power system transients, Pulse width modulated power converters",

author = "Zhipeng Shen and Jiebei Zhu and Leijiao Ge and Siqi Bu and Junbo Zhao and Chung, {Chi Yung} and Xialin Li and Chengshan Wang",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China under Grant 51977143 and in part by the Tianjin Natural Science Foundation under Grant 18JCYBJC41000. Publisher Copyright: {\textcopyright} 1969-2012 IEEE.",

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AU - Chung, Chi Yung

AU - Li, Xialin

AU - Wang, Chengshan

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Y1 - 2022/1/1

N2 - This paper proposes a novel variable-inertia emulation control (VIEC) scheme that enables voltage-source-converter based high-voltage DC (VSC-HVDC) transmission systems to flexibly support AC grid frequency stability like synchronous generators. The VIEC scheme allows us to extract the energy from the augmented DC capacitance for inertia emulation by controlling the DC voltage without affecting the stability of the AC system connected on the remote side. In particular, with the proposed VIEC scheme, the inertia time constant can be flexibly emulated and its value can be automatically adjusted according to the rate of change of grid frequency as well as grid frequency deviations. This leads to more effective inertial support across different timescales. Modal analysis is carried out to investigate the impacts of inertia and DC capacitance, and to obtain the optimal control parameters. The effectiveness and advantages of the proposed VIEC scheme are demonstrated on an IEEE benchmark system in the presence of faults and load changes.

AB - This paper proposes a novel variable-inertia emulation control (VIEC) scheme that enables voltage-source-converter based high-voltage DC (VSC-HVDC) transmission systems to flexibly support AC grid frequency stability like synchronous generators. The VIEC scheme allows us to extract the energy from the augmented DC capacitance for inertia emulation by controlling the DC voltage without affecting the stability of the AC system connected on the remote side. In particular, with the proposed VIEC scheme, the inertia time constant can be flexibly emulated and its value can be automatically adjusted according to the rate of change of grid frequency as well as grid frequency deviations. This leads to more effective inertial support across different timescales. Modal analysis is carried out to investigate the impacts of inertia and DC capacitance, and to obtain the optimal control parameters. The effectiveness and advantages of the proposed VIEC scheme are demonstrated on an IEEE benchmark system in the presence of faults and load changes.

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KW - Pulse width modulated power converters

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Variable-Inertia Emulation Control Scheme for VSC-HVDC Transmission Systems

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