STATIC EXCITATION SYSTEM WITH DIGITAL CONTROL FOR SYNCHRONOUS GENERATORS

摘要

The invention relates to a static excitation systems with digital control of the excitation current of a synchronous generator connected to a three-phase voltage network of infinite power. According to the invention, the current excitation control system comprises a data acquisition unit (19), achieved by means of quick programmed processor for the analogous digital conversion of analogous quantities of the supply network where the generator (1), the generator voltage and the generator current (1) are to be coupled. The result of the digital conversion of said quantities is taken over by a programmable automaton (20) wherein, based on a program, the setting schedule of the excitation current is implemented, said automaton comprising, in principle, a dependent control loop for controlling the excitation current of the generator (1).