Modal control design of damping controllers for thyristor-controlled series capacitor to stabilize common-mode torsional oscillations of a series-capacitor compensated power system

Li Wang, Hong Rong Liang, Anton Victorovich Prokhorov, Hazlie Mokhlis, Chua Kein Huat

Research output: Contribution to journalArticle

Abstract

This paper proposes a unified approach based on modal control theory to design damping controllers of a thyristor-controlled series capacitor (TCSC) for stabilizing the inherent common-mode torsional interactions occurred in a series-capacitor compensated power system. The studied power system includes two nonidentical turbine-generator sets connected to an infinite bus through a common series-capacitor compensated transmission line. The employed TCSC is properly connected in parallel with a part of the series-capacitor bank of the compensated transmission line. The damping controllers of the TCSC employ the speed deviations of both turbine-generator sets as input signals to stabilize unstable torsional modes of the studied system by increasing the damping of these modes. Both frequency-domain approach based on eigenvalue analysis and time-domain scheme based on nonlinear-model simulations under different disturbance conditions are systematically performed. It can be concluded from the simulated results that the employed TCSC joined with the damping controllers designed by using modal control theory can effectively stabilize the common-mode torsional oscillations of the studied series-capacitor compensated system.

Original languageEnglish
Article number8606986
Pages (from-to)2327-2336
Number of pages10
JournalIEEE Transactions on Industry Applications
Volume55
Issue number3
DOIs
Publication statusPublished - 1 May 2019

Fingerprint

Thyristors
Capacitors
Damping
Controllers
Turbogenerators
Control theory
Electric lines

Keywords

  • Common-mode torsional oscillations
  • damping controller
  • modal control theory
  • stability
  • subsynchronous resonance (SSR)
  • thyristor-controlled series capacitor (TCSC)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Modal control design of damping controllers for thyristor-controlled series capacitor to stabilize common-mode torsional oscillations of a series-capacitor compensated power system. / Wang, Li; Liang, Hong Rong; Prokhorov, Anton Victorovich; Mokhlis, Hazlie; Huat, Chua Kein.

In: IEEE Transactions on Industry Applications, Vol. 55, No. 3, 8606986, 01.05.2019, p. 2327-2336.

Research output: Contribution to journalArticle

@article{9ab39c0d5e8e43fba7391bb0c10323e6,
title = "Modal control design of damping controllers for thyristor-controlled series capacitor to stabilize common-mode torsional oscillations of a series-capacitor compensated power system",
abstract = "This paper proposes a unified approach based on modal control theory to design damping controllers of a thyristor-controlled series capacitor (TCSC) for stabilizing the inherent common-mode torsional interactions occurred in a series-capacitor compensated power system. The studied power system includes two nonidentical turbine-generator sets connected to an infinite bus through a common series-capacitor compensated transmission line. The employed TCSC is properly connected in parallel with a part of the series-capacitor bank of the compensated transmission line. The damping controllers of the TCSC employ the speed deviations of both turbine-generator sets as input signals to stabilize unstable torsional modes of the studied system by increasing the damping of these modes. Both frequency-domain approach based on eigenvalue analysis and time-domain scheme based on nonlinear-model simulations under different disturbance conditions are systematically performed. It can be concluded from the simulated results that the employed TCSC joined with the damping controllers designed by using modal control theory can effectively stabilize the common-mode torsional oscillations of the studied series-capacitor compensated system.",
keywords = "Common-mode torsional oscillations, damping controller, modal control theory, stability, subsynchronous resonance (SSR), thyristor-controlled series capacitor (TCSC)",
author = "Li Wang and Liang, {Hong Rong} and Prokhorov, {Anton Victorovich} and Hazlie Mokhlis and Huat, {Chua Kein}",
year = "2019",
month = "5",
day = "1",
doi = "10.1109/TIA.2019.2892343",
language = "English",
volume = "55",
pages = "2327--2336",
journal = "IEEE Transactions on Industry Applications",
issn = "0093-9994",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "3",

}

TY - JOUR

T1 - Modal control design of damping controllers for thyristor-controlled series capacitor to stabilize common-mode torsional oscillations of a series-capacitor compensated power system

AU - Wang, Li

AU - Liang, Hong Rong

AU - Prokhorov, Anton Victorovich

AU - Mokhlis, Hazlie

AU - Huat, Chua Kein

PY - 2019/5/1

Y1 - 2019/5/1

N2 - This paper proposes a unified approach based on modal control theory to design damping controllers of a thyristor-controlled series capacitor (TCSC) for stabilizing the inherent common-mode torsional interactions occurred in a series-capacitor compensated power system. The studied power system includes two nonidentical turbine-generator sets connected to an infinite bus through a common series-capacitor compensated transmission line. The employed TCSC is properly connected in parallel with a part of the series-capacitor bank of the compensated transmission line. The damping controllers of the TCSC employ the speed deviations of both turbine-generator sets as input signals to stabilize unstable torsional modes of the studied system by increasing the damping of these modes. Both frequency-domain approach based on eigenvalue analysis and time-domain scheme based on nonlinear-model simulations under different disturbance conditions are systematically performed. It can be concluded from the simulated results that the employed TCSC joined with the damping controllers designed by using modal control theory can effectively stabilize the common-mode torsional oscillations of the studied series-capacitor compensated system.

AB - This paper proposes a unified approach based on modal control theory to design damping controllers of a thyristor-controlled series capacitor (TCSC) for stabilizing the inherent common-mode torsional interactions occurred in a series-capacitor compensated power system. The studied power system includes two nonidentical turbine-generator sets connected to an infinite bus through a common series-capacitor compensated transmission line. The employed TCSC is properly connected in parallel with a part of the series-capacitor bank of the compensated transmission line. The damping controllers of the TCSC employ the speed deviations of both turbine-generator sets as input signals to stabilize unstable torsional modes of the studied system by increasing the damping of these modes. Both frequency-domain approach based on eigenvalue analysis and time-domain scheme based on nonlinear-model simulations under different disturbance conditions are systematically performed. It can be concluded from the simulated results that the employed TCSC joined with the damping controllers designed by using modal control theory can effectively stabilize the common-mode torsional oscillations of the studied series-capacitor compensated system.

KW - Common-mode torsional oscillations

KW - damping controller

KW - modal control theory

KW - stability

KW - subsynchronous resonance (SSR)

KW - thyristor-controlled series capacitor (TCSC)

UR - http://www.scopus.com/inward/record.url?scp=85064878647&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064878647&partnerID=8YFLogxK

U2 - 10.1109/TIA.2019.2892343

DO - 10.1109/TIA.2019.2892343

M3 - Article

VL - 55

SP - 2327

EP - 2336

JO - IEEE Transactions on Industry Applications

JF - IEEE Transactions on Industry Applications

SN - 0093-9994

IS - 3

M1 - 8606986

ER -