Novel two-stage unified power flow controller design for tie-line low frequency oscillation suppression

Fang Zhang, Ka Wing Chan, Da Zhong Fang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper proposes a novel two-stage UPFC control scheme for tie-line low frequency oscillation suppression. The objective of the first-stage control is to damp the oscillation of the system quickly based on the angular speed difference between the COIs (center of inertias). A fairly accurate method to estimate the angular speed difference between the COIs using locally measurable quantity at the UPFC location is proposed. The objective of the second-stage control is to implement coordinated control among the real power flow, AC bus voltage and DC capacitor voltage. The best control scheme is determined using the relative gain array (RGA) method in the control theory. Simulation results show that the proposed two-stage control scheme can effectively damp out the tie-line low frequency oscillation while a good coordinated control performance can be maintained.
Original languageEnglish
Title of host publication7th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2006)
Edition523 CP
DOIs
Publication statusPublished - 1 Dec 2006
Event7th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2006 - Hong Kong, Hong Kong
Duration: 30 Oct 20062 Nov 2006

Conference

Conference7th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2006
Country/TerritoryHong Kong
CityHong Kong
Period30/10/062/11/06

Keywords

  • Low frequency oscillation, two-stage control, UPFC, capacitor voltage, RGA, damping control, coordinated control

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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