QUICK SYSTEMS OF VOLTAGE STABILIZATION OF GENERATORS WITH VARIOUS FEEDBACKS

Abstract

By implementation of automated control systems with feedbacks on the power electric stations
and substations it can be significantly improve qualitative characteristics of electrical energy. Modern elements of automatics (controllers and sensors) can be used to stabilize of voltage with high precision (about
0.1 %) and quick acting time before 1sec. The supply of electricity to consumers without power surges will
enable them to put into operation industrial enterprises that produce competitive products. The report presents the results of the study of dynamic regimes for controlling the voltage stabilization of high-power generators of both the supplied and alternating currents using various types of regulators, including digital
ones. The control system with a proportional-type controller (P) is simple, but this system is characterized by
inaccuracy, i.e. Static voltage drop. The control system with a proportional-integral controller (PI) does not
have a static error, but is more inertial. The system with a proportional-integral-differentiating type (PID)
controller is relatively complicated, but with load variation it is characterized by a smaller dynamic voltage
drop and a maximum speed (0.5 sec.) in transient regimes. The dynamic voltage drop is further reduced
when the feedback control system is added (together with the main feedbacks). The optimum parameters of
the regulators are determined by the method of logarithmic frequency characteristics.

Author Biography

Джумбер Николаевич Дочвири, Georgian Technical University

Dr. of Science, Professor of the Department of electrical engineering, Georgian Technical University

Published
2017-05-10
How to Cite
Дочвири, Д. (2017). QUICK SYSTEMS OF VOLTAGE STABILIZATION OF GENERATORS WITH VARIOUS FEEDBACKS. Electrotechnic and Computer Systems, (25(101), 366-369. https://doi.org/10.15276/eltecs.25.101.2017.43
Section
Automated electromechanical systems