Dynamic modelling of VSCs in a dq rotating frame for pole-to-pole dc fault study

Weixing Lin, Dragan Jovcic

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

As the future dc grids will involve numerous converter systems, the accuracy and speed of their modelling becomes of high importance. The modelling in a rotating dq frame is able to transform the quantities from ac variables to dc variables resulting in significantly improved simulation speed. dq analytical modelling is normally used only for dynamic studies with voltage source converter (VSC), while large-disturbance dc faults are commonly studied in static abc frame. A new dq frame modelling method for VSC, including MMC topology, for dc fault study is proposed. A unified modelling of the VSC for both dynamic and dc fault study is therefore developed. The model is separately presented for other fault-tolerant VSC, like LCL VSC. Simulation results verified that the proposed model is accurate when compared with detailed switching model on PSCAD/EMTDC. The proposed unified VSC model is able to replace the detailed switching model for both dc fault (only pole-to-pole dc fault is studied) and dynamic studies. The modelling approach opens the possibility for modelling large dc grids in dq frame for wide range of operating conditions.
Original languageEnglish
Pages (from-to)1072 - 1081
Number of pages10
JournalIET Generation, Transmission & Distribution
Volume11
Issue number4
Early online date15 Nov 2016
DOIs
Publication statusPublished - 16 Mar 2017

Fingerprint

Poles
Electric potential
Topology

Keywords

  • fault tolerance
  • power converters
  • power system faults
  • power grids

Cite this

Dynamic modelling of VSCs in a dq rotating frame for pole-to-pole dc fault study. / Lin, Weixing; Jovcic, Dragan.

In: IET Generation, Transmission & Distribution, Vol. 11, No. 4, 16.03.2017, p. 1072 - 1081 .

Research output: Contribution to journalArticle

@article{19d8f136dc634741a2bf2d74a9fd8df5,
title = "Dynamic modelling of VSCs in a dq rotating frame for pole-to-pole dc fault study",
abstract = "As the future dc grids will involve numerous converter systems, the accuracy and speed of their modelling becomes of high importance. The modelling in a rotating dq frame is able to transform the quantities from ac variables to dc variables resulting in significantly improved simulation speed. dq analytical modelling is normally used only for dynamic studies with voltage source converter (VSC), while large-disturbance dc faults are commonly studied in static abc frame. A new dq frame modelling method for VSC, including MMC topology, for dc fault study is proposed. A unified modelling of the VSC for both dynamic and dc fault study is therefore developed. The model is separately presented for other fault-tolerant VSC, like LCL VSC. Simulation results verified that the proposed model is accurate when compared with detailed switching model on PSCAD/EMTDC. The proposed unified VSC model is able to replace the detailed switching model for both dc fault (only pole-to-pole dc fault is studied) and dynamic studies. The modelling approach opens the possibility for modelling large dc grids in dq frame for wide range of operating conditions.",
keywords = "fault tolerance, power converters, power system faults, power grids",
author = "Weixing Lin and Dragan Jovcic",
note = "Financial support from European Research Council in FP7 grant no 259328, 2010 is acknowledged.",
year = "2017",
month = "3",
day = "16",
doi = "10.1049/iet-gtd.2015.0877",
language = "English",
volume = "11",
pages = "1072 -- 1081",
journal = "IET Generation, Transmission & Distribution",
issn = "1751-8687",
publisher = "Institution of Engineering and Technology",
number = "4",

}

TY - JOUR

T1 - Dynamic modelling of VSCs in a dq rotating frame for pole-to-pole dc fault study

AU - Lin, Weixing

AU - Jovcic, Dragan

N1 - Financial support from European Research Council in FP7 grant no 259328, 2010 is acknowledged.

PY - 2017/3/16

Y1 - 2017/3/16

N2 - As the future dc grids will involve numerous converter systems, the accuracy and speed of their modelling becomes of high importance. The modelling in a rotating dq frame is able to transform the quantities from ac variables to dc variables resulting in significantly improved simulation speed. dq analytical modelling is normally used only for dynamic studies with voltage source converter (VSC), while large-disturbance dc faults are commonly studied in static abc frame. A new dq frame modelling method for VSC, including MMC topology, for dc fault study is proposed. A unified modelling of the VSC for both dynamic and dc fault study is therefore developed. The model is separately presented for other fault-tolerant VSC, like LCL VSC. Simulation results verified that the proposed model is accurate when compared with detailed switching model on PSCAD/EMTDC. The proposed unified VSC model is able to replace the detailed switching model for both dc fault (only pole-to-pole dc fault is studied) and dynamic studies. The modelling approach opens the possibility for modelling large dc grids in dq frame for wide range of operating conditions.

AB - As the future dc grids will involve numerous converter systems, the accuracy and speed of their modelling becomes of high importance. The modelling in a rotating dq frame is able to transform the quantities from ac variables to dc variables resulting in significantly improved simulation speed. dq analytical modelling is normally used only for dynamic studies with voltage source converter (VSC), while large-disturbance dc faults are commonly studied in static abc frame. A new dq frame modelling method for VSC, including MMC topology, for dc fault study is proposed. A unified modelling of the VSC for both dynamic and dc fault study is therefore developed. The model is separately presented for other fault-tolerant VSC, like LCL VSC. Simulation results verified that the proposed model is accurate when compared with detailed switching model on PSCAD/EMTDC. The proposed unified VSC model is able to replace the detailed switching model for both dc fault (only pole-to-pole dc fault is studied) and dynamic studies. The modelling approach opens the possibility for modelling large dc grids in dq frame for wide range of operating conditions.

KW - fault tolerance

KW - power converters

KW - power system faults

KW - power grids

U2 - 10.1049/iet-gtd.2015.0877

DO - 10.1049/iet-gtd.2015.0877

M3 - Article

VL - 11

SP - 1072

EP - 1081

JO - IET Generation, Transmission & Distribution

JF - IET Generation, Transmission & Distribution

SN - 1751-8687

IS - 4

ER -