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 language | English |
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Title of host publication | 7th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2006) |
Edition | 523 CP |
DOIs | |
Publication status | Published - 1 Dec 2006 |
Event | 7th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2006 - Hong Kong, Hong Kong Duration: 30 Oct 2006 → 2 Nov 2006 |
Conference
Conference | 7th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2006 |
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Country/Territory | Hong Kong |
City | Hong Kong |
Period | 30/10/06 → 2/11/06 |
Keywords
- Low frequency oscillation, two-stage control, UPFC, capacitor voltage, RGA, damping control, coordinated control
ASJC Scopus subject areas
- Electrical and Electronic Engineering