Method for Determining the Droop Coefficients of Hybrid Multi-Terminal HVDC Systems to Suppress AC Voltage Fluctuations

Gyu Sub Lee; Do Hoon Kwon; Seung Il Moon

doi:10.1109/TPWRS.2020.3014805

Method for Determining the Droop Coefficients of Hybrid Multi-Terminal HVDC Systems to Suppress AC Voltage Fluctuations

Gyu Sub Lee, Do Hoon Kwon, Seung Il Moon

Dept. of Electrical and Information Engineering

Seoul National University

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

9 Scopus citations

Abstract

Different from voltage-source converter (VSC), reactive power absorption of line-commutated converters (LCCs) changes depending on DC voltage level. Therefore, the amount of AC voltage fluctuations at inverter side are different according to I-V droop constants in hybrid multi-terminal high-voltage direct current (MT-HVDC) system. This paper proposes a method for calculating the I-V droop constants in a hybrid MT-HVDC system to suppress these AC voltage fluctuations, based on the sensitivity of AC and DC networks. Simulations performed using PSCAD demonstrate the effectiveness of the proposed method.

Original language	English
Article number	9161405
Pages (from-to)	4944-4947
Number of pages	4
Journal	IEEE Transactions on Power Systems
Volume	35
Issue number	6
DOIs	https://doi.org/10.1109/TPWRS.2020.3014805
State	Published - Nov 2020

Keywords

AC voltage control
droop control
hybrid multi-terminal HVDC system
sensitivity analysis

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/TPWRS.2020.3014805

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title = "Method for Determining the Droop Coefficients of Hybrid Multi-Terminal HVDC Systems to Suppress AC Voltage Fluctuations",

abstract = "Different from voltage-source converter (VSC), reactive power absorption of line-commutated converters (LCCs) changes depending on DC voltage level. Therefore, the amount of AC voltage fluctuations at inverter side are different according to I-V droop constants in hybrid multi-terminal high-voltage direct current (MT-HVDC) system. This paper proposes a method for calculating the I-V droop constants in a hybrid MT-HVDC system to suppress these AC voltage fluctuations, based on the sensitivity of AC and DC networks. Simulations performed using PSCAD demonstrate the effectiveness of the proposed method.",

keywords = "AC voltage control, droop control, hybrid multi-terminal HVDC system, sensitivity analysis",

author = "Lee, \{Gyu Sub\} and Kwon, \{Do Hoon\} and Moon, \{Seung Il\}",

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AU - Lee, Gyu Sub

AU - Kwon, Do Hoon

AU - Moon, Seung Il

PY - 2020/11

Y1 - 2020/11

N2 - Different from voltage-source converter (VSC), reactive power absorption of line-commutated converters (LCCs) changes depending on DC voltage level. Therefore, the amount of AC voltage fluctuations at inverter side are different according to I-V droop constants in hybrid multi-terminal high-voltage direct current (MT-HVDC) system. This paper proposes a method for calculating the I-V droop constants in a hybrid MT-HVDC system to suppress these AC voltage fluctuations, based on the sensitivity of AC and DC networks. Simulations performed using PSCAD demonstrate the effectiveness of the proposed method.

AB - Different from voltage-source converter (VSC), reactive power absorption of line-commutated converters (LCCs) changes depending on DC voltage level. Therefore, the amount of AC voltage fluctuations at inverter side are different according to I-V droop constants in hybrid multi-terminal high-voltage direct current (MT-HVDC) system. This paper proposes a method for calculating the I-V droop constants in a hybrid MT-HVDC system to suppress these AC voltage fluctuations, based on the sensitivity of AC and DC networks. Simulations performed using PSCAD demonstrate the effectiveness of the proposed method.

KW - AC voltage control

KW - droop control

KW - hybrid multi-terminal HVDC system

KW - sensitivity analysis

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JO - IEEE Transactions on Power Systems

JF - IEEE Transactions on Power Systems

IS - 6

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ER -

Method for Determining the Droop Coefficients of Hybrid Multi-Terminal HVDC Systems to Suppress AC Voltage Fluctuations

Abstract

Keywords

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