Impact of strength and proximity of receiving AC systems on cascaded LCC-MMC hybrid HVDC system

Yongjie He; Wang Xiang; Binye Ni; Xiaojun Lu; Jinyu  Wen

doi:10.1109/TPWRD.2021.3073896

Impact of strength and proximity of receiving AC systems on cascaded LCC-MMC hybrid HVDC system

Yongjie He, Wang Xiang, Binye Ni, Xiaojun Lu, Jinyu Wen

Electronic And Electrical Engineering

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

20 Citations (Scopus)

26 Downloads (Pure)

Abstract

The cascaded hybrid LCC-MMC inverter is considered as a feasible option to mitigate the commutation failure problem of conventional LCC-HVDC while maintaining bulk power transmission capability. However, the coupling between different types of converters may result in instability when the inverter integrates with weak AC systems. This paper establishes a small-signal model of the cascaded LCC-MMC inverter based hybrid HVDC system and validates the model against PSCAD/EMTDC. Through eigenvalue analysis, the impact of the strength and proximity of receiving AC systems on the small-signal stability is investigated, and the stable zone of the strength of receiving AC systems is identified. Besides, a supplementary coupling mitigation control is proposed to tackle the instability problem under weak AC systems integration. Both analytical results and time-domain simulations demonstrate the validity of the supplementary control.

Original language	English
Number of pages	13
Journal	IEEE Transactions on Power Delivery
DOIs	https://doi.org/10.1109/TPWRD.2021.3073896
Publication status	Published - 16 Apr 2021

Keywords

HVDC transmission
inverters
inductance
power system stability
hybrid power systems
renewable energy

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10.1109/TPWRD.2021.3073896

He-etal-IEEE-TOPD-2021-Impact-of-strength-and-proximity-of-receiving-AC-systems-on-cascadedAccepted author manuscript, 785 KB

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title = "Impact of strength and proximity of receiving AC systems on cascaded LCC-MMC hybrid HVDC system",

abstract = "The cascaded hybrid LCC-MMC inverter is considered as a feasible option to mitigate the commutation failure problem of conventional LCC-HVDC while maintaining bulk power transmission capability. However, the coupling between different types of converters may result in instability when the inverter integrates with weak AC systems. This paper establishes a small-signal model of the cascaded LCC-MMC inverter based hybrid HVDC system and validates the model against PSCAD/EMTDC. Through eigenvalue analysis, the impact of the strength and proximity of receiving AC systems on the small-signal stability is investigated, and the stable zone of the strength of receiving AC systems is identified. Besides, a supplementary coupling mitigation control is proposed to tackle the instability problem under weak AC systems integration. Both analytical results and time-domain simulations demonstrate the validity of the supplementary control.",

keywords = "HVDC transmission, inverters, inductance, power system stability, hybrid power systems, renewable energy",

author = "Yongjie He and Wang Xiang and Binye Ni and Xiaojun Lu and Jinyu Wen",

note = "{\textcopyright} 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works",

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T1 - Impact of strength and proximity of receiving AC systems on cascaded LCC-MMC hybrid HVDC system

AU - He, Yongjie

AU - Xiang, Wang

AU - Ni, Binye

AU - Lu, Xiaojun

AU - Wen, Jinyu

N1 - © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works

PY - 2021/4/16

Y1 - 2021/4/16

N2 - The cascaded hybrid LCC-MMC inverter is considered as a feasible option to mitigate the commutation failure problem of conventional LCC-HVDC while maintaining bulk power transmission capability. However, the coupling between different types of converters may result in instability when the inverter integrates with weak AC systems. This paper establishes a small-signal model of the cascaded LCC-MMC inverter based hybrid HVDC system and validates the model against PSCAD/EMTDC. Through eigenvalue analysis, the impact of the strength and proximity of receiving AC systems on the small-signal stability is investigated, and the stable zone of the strength of receiving AC systems is identified. Besides, a supplementary coupling mitigation control is proposed to tackle the instability problem under weak AC systems integration. Both analytical results and time-domain simulations demonstrate the validity of the supplementary control.

AB - The cascaded hybrid LCC-MMC inverter is considered as a feasible option to mitigate the commutation failure problem of conventional LCC-HVDC while maintaining bulk power transmission capability. However, the coupling between different types of converters may result in instability when the inverter integrates with weak AC systems. This paper establishes a small-signal model of the cascaded LCC-MMC inverter based hybrid HVDC system and validates the model against PSCAD/EMTDC. Through eigenvalue analysis, the impact of the strength and proximity of receiving AC systems on the small-signal stability is investigated, and the stable zone of the strength of receiving AC systems is identified. Besides, a supplementary coupling mitigation control is proposed to tackle the instability problem under weak AC systems integration. Both analytical results and time-domain simulations demonstrate the validity of the supplementary control.

KW - HVDC transmission

KW - inverters

KW - inductance

KW - power system stability

KW - hybrid power systems

KW - renewable energy

U2 - 10.1109/TPWRD.2021.3073896

DO - 10.1109/TPWRD.2021.3073896

M3 - Article

SN - 0885-8977

JO - IEEE Transactions on Power Delivery

JF - IEEE Transactions on Power Delivery

ER -

Impact of strength and proximity of receiving AC systems on cascaded LCC-MMC hybrid HVDC system

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Keywords

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