Analysis of the Functioning of Automatic Synchronous Generator Excitation Regulators with Various Input Signals of Frequency Stabilization Channels in the Certification Scheme¹

Anecessary requirement for automatic excitation regulation systems is ensuring the stability of the electric energy systems (EES) and the required quality of the transients (TP) of changes in operating parameters under the effect of various disturbances. In order to improve the damping of TEES, various stabilization channels of the automatic excitation regulator (AER) are used, as a rule. In the microprocessor regulator (MR) of the AER are stabilization channels, both internal (from the derivatives of the rotor current and stator voltage) and external (from the deviation and derivative of the frequency of stator voltage). The article compares the quality of stabilization of the operating parameters when using the AER signal in the frequency stabilization channels of the voltage on the generator buses (regular signal), and the differences between the deviation of the frequency of rotation of the generator shaft and the frequency of voltage on the station buses in EES mode and in certification mode. The effect of the parameters of the synchronous generator and of the conditions of its operation on the areas of the stability of the regulation system and the quality of damping is examined. It is shown that changing the parameters of the stabilization channel filters can increase the regions of stability and enhance the quality of damping of transient fluctuations.