PROCÉDÉ DE FONCTIONNEMENT D'UNE INSTALLATION HYDROÉLECTRIQUE POUR LA RÉGULATION DE LA FRÉQUENCE DU RÉSEAU

摘要

A hydropower plant for regulating the frequency of an electric grid has an upper water reservoir, a lower water reservoir, and a waterway that connects the upper water reservoir to the lower water reservoir. A turbine is arranged in the waterway and includes a runner, a guide vane apparatus and a device for blowing out the runner space. An electric double-fed asynchronous machine is mechanically connected to the turbine and a frequency converter is electrically connected to the asynchronous machine. A mains transformer is electrically connected to the asynchronous machine, frequency converter and mains grid. A resistor is arranged in a DC intermediate circuit of the frequency converter in such a way that it may connect the line sections of the DC intermediate circuit to one another. There is also provided a device for cooling the resistor.