Robust Digital Automatic Reactive Power Regulator for Hydro Power Plants

Author

Robert, G. ; Planque, JL

Author_Institution

EDF Hydro Eng. Centre, Le Bourget du Lac

fYear

2007

fDate

21-23 May 2007

Firstpage

175

Lastpage

179

Abstract

In this paper, a modelling based on a simplified state-space representation of a synchronous generator has been developed for tuning automatic reactive power regulators (AQR) which equip some French hydro power plants. These digital PI controllers participate to secondary voltage control with some control performance criteria updated lastly by the transmission system operator. New AQR´s parameters are calculated from a time-discrete transfer function approach which takes into account modelling uncertainties with robustness margins. The validity of the tuning was verified by comparing Matlab simulations with measurements carried out on a 110 MVA hydro unit.

Keywords

PI control; hydroelectric power stations; reactive power control; synchronous generators; transfer functions; voltage control; automatic reactive power regulators; digital PI controller; hydro power plants; secondary voltage control; synchronous generator; time-discrete transfer function; Control systems; Digital control; Mathematical model; Power generation; Power system modeling; Reactive power; Regulators; Robustness; Synchronous generators; Voltage control; Hydro; PI controller; reactive power; secondary voltage control; synchronous generator;

fLanguage

English

Publisher

ieee

Conference_Titel

Clean Electrical Power, 2007. ICCEP '07. International Conference on

Conference_Location

Capri

Print_ISBN

1-4244-0632-3

Electronic_ISBN

1-4244-0632-3

Type

conf

DOI

10.1109/ICCEP.2007.384207

Filename

4272378