Static reference frame LQR optimal state-feedback control for static-series compensators

Author

Perez, J.M. ; Cobreces, Santiago ; Rodriguez, F.J. ; Bueno, Emilio J. ; Sanz, I. ; Huerta, F. ; Grino, Robert

Author_Institution

Dept. of Electron., Alcala Univ., Alcala de Henares, Spain

fYear

2013

fDate

10-13 Nov. 2013

Firstpage

3776

Lastpage

3781

Abstract

This paper presents an optimal LQR control for a static-series compensator (SSC) and propounds a design criterion for the choice of the LQR weights in order to mitigate grid-voltage dips. The authors present a SSC state-space model that considers the modelling of grid, transformer and R-L load. The proposed control works in the Stationary-Reference Frames (SRF) and implements AFC resonant controllers, allowing the direct control of unbalanced dips in a three wire grid-load connection.

Keywords

linear quadratic control; power grids; power supply quality; power transformers; state feedback; state-space methods; AFC resonant controllers; R-L load modelling; SRF; SSC state-space model; grid modelling; grid-voltage dip mitigation; static reference frame LQR optimal state-feedback control; static-series compensators; stationary-reference frames; three-wire grid-load connection; transformer modelling; unbalanced dip direct control; Delays; Frequency control; Load modeling; Power conversion; Vectors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE

Conference_Location

Vienna

ISSN

1553-572X

Type

conf

DOI

10.1109/IECON.2013.6699737

Filename

6699737