Reproducing oscillatory behaviour of a hydroelectric power station by computer simulation

This paper describes a complex simulation of a pumped-storage hydroelectric power station. Dinorwig power station's fast response is essential for con trolling the electricity supply frequency on the national grid in Great Bri tain. The paper describes the station's key physical features and it is sho wn that the plant is nonlinear, multivariable and time-varying. The details of a Simulink(R) model, which is valid over a wide range of operating cond itions, are presented. The improved understanding of the station's dynamic characteristics is illustrated by using the simulation to investigate an in cident of oscillatory behaviour in its power output. (C) 2000 Elsevier Scie nce Ltd. All rights reserved.