A cascaded converter interfacing long distance HVDC and back-to-back HVDC systems

Wang Xiang; Ruizhang Yang; Chang Lin; Jiapei Zhou; Jinyu Wen; Weixing Lin

doi:10.1109/JESTPE.2019.2913915

A cascaded converter interfacing long distance HVDC and back-to-back HVDC systems

Wang Xiang, Ruizhang Yang, Chang Lin, Jiapei Zhou, Jinyu Wen, Weixing Lin

Electronic And Electrical Engineering

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

6 Citations (Scopus)

13 Downloads (Pure)

Abstract

This paper proposes a cascaded converter dedicated to long-distance HVDC infeed and asynchronous back-to-back interconnection of receiving grids. The cascaded converter is consisted of MMCs in series and parallel connection, meeting the high DC voltage and power demand of HVDC system. It realizes hierarchical feeding and asynchronous interconnection of receiving grids, optimizing the multi-infeed short circuit ratio and improving the flexibility of the receiving grids. The topology and operating characteristics of the cascaded converter are introduced in detail. The multi-infeed short-circuits ratio (MISCR) and the maximum power infeed of the cascaded converter based HVDC systems are analyzed. Various feasible operating modes with online switching strategies of the cascaded converter are studied to improve the operational flexibility of the system. The simulation results verify the effectiveness of the control strategy of the HVDC system embedding the cascaded converter. The DC faults clearing strategy and operating modes switching strategies are also validated.

Original language	English
Number of pages	13
Journal	IEEE Journal of Emerging and Selected Topics in Power Electronics
Early online date	30 Apr 2019
DOIs	https://doi.org/10.1109/JESTPE.2019.2913915
Publication status	E-pub ahead of print - 30 Apr 2019

Keywords

HVDC transmission
integrated circuit interconnections
inverters
topology
power grids

Access to Document

10.1109/JESTPE.2019.2913915

Xiang-etal-IEEE-JESTPE-2019-A-cascaded-converter-interfacing-long-distance-HVDCAccepted author manuscript, 2.44 MB

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Cite this

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title = "A cascaded converter interfacing long distance HVDC and back-to-back HVDC systems",

abstract = "This paper proposes a cascaded converter dedicated to long-distance HVDC infeed and asynchronous back-to-back interconnection of receiving grids. The cascaded converter is consisted of MMCs in series and parallel connection, meeting the high DC voltage and power demand of HVDC system. It realizes hierarchical feeding and asynchronous interconnection of receiving grids, optimizing the multi-infeed short circuit ratio and improving the flexibility of the receiving grids. The topology and operating characteristics of the cascaded converter are introduced in detail. The multi-infeed short-circuits ratio (MISCR) and the maximum power infeed of the cascaded converter based HVDC systems are analyzed. Various feasible operating modes with online switching strategies of the cascaded converter are studied to improve the operational flexibility of the system. The simulation results verify the effectiveness of the control strategy of the HVDC system embedding the cascaded converter. The DC faults clearing strategy and operating modes switching strategies are also validated.",

keywords = "HVDC transmission, integrated circuit interconnections, inverters, topology, power grids",

author = "Wang Xiang and Ruizhang Yang and Chang Lin and Jiapei Zhou and Jinyu Wen and Weixing Lin",

note = "{\textcopyright} 2019 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 - A cascaded converter interfacing long distance HVDC and back-to-back HVDC systems

AU - Xiang, Wang

AU - Yang, Ruizhang

AU - Lin, Chang

AU - Zhou, Jiapei

AU - Wen, Jinyu

AU - Lin, Weixing

N1 - © 2019 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 - 2019/4/30

Y1 - 2019/4/30

N2 - This paper proposes a cascaded converter dedicated to long-distance HVDC infeed and asynchronous back-to-back interconnection of receiving grids. The cascaded converter is consisted of MMCs in series and parallel connection, meeting the high DC voltage and power demand of HVDC system. It realizes hierarchical feeding and asynchronous interconnection of receiving grids, optimizing the multi-infeed short circuit ratio and improving the flexibility of the receiving grids. The topology and operating characteristics of the cascaded converter are introduced in detail. The multi-infeed short-circuits ratio (MISCR) and the maximum power infeed of the cascaded converter based HVDC systems are analyzed. Various feasible operating modes with online switching strategies of the cascaded converter are studied to improve the operational flexibility of the system. The simulation results verify the effectiveness of the control strategy of the HVDC system embedding the cascaded converter. The DC faults clearing strategy and operating modes switching strategies are also validated.

AB - This paper proposes a cascaded converter dedicated to long-distance HVDC infeed and asynchronous back-to-back interconnection of receiving grids. The cascaded converter is consisted of MMCs in series and parallel connection, meeting the high DC voltage and power demand of HVDC system. It realizes hierarchical feeding and asynchronous interconnection of receiving grids, optimizing the multi-infeed short circuit ratio and improving the flexibility of the receiving grids. The topology and operating characteristics of the cascaded converter are introduced in detail. The multi-infeed short-circuits ratio (MISCR) and the maximum power infeed of the cascaded converter based HVDC systems are analyzed. Various feasible operating modes with online switching strategies of the cascaded converter are studied to improve the operational flexibility of the system. The simulation results verify the effectiveness of the control strategy of the HVDC system embedding the cascaded converter. The DC faults clearing strategy and operating modes switching strategies are also validated.

KW - HVDC transmission

KW - integrated circuit interconnections

KW - inverters

KW - topology

KW - power grids

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DO - 10.1109/JESTPE.2019.2913915

M3 - Article

JO - IEEE Journal of Emerging and Selected Topics in Power Electronics

JF - IEEE Journal of Emerging and Selected Topics in Power Electronics

SN - 2168-6777

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