ADAPTIVE AUTOMATIC VOLTAGE REGULATION IN THE ELECTRICAL GRID USING SINGLE-PHASE LINEAR VOLTAGE REGULATORS

Abstract

Ensuring the required voltage level in rural electric grids is a necessary condition for the efficient operation of agricultural enterprises and comfort in rural life. The overstated length of rural power transmission lines leads to excessive voltage deviations at consumer inputs. The existing methods and technical means of voltage regulation do not in all cases allow to provide the necessary level of voltage in the grid. (Research purpose) The research purpose is developing a method and device for phase-by-phase automatic voltage regulation in the electrical grid using linear voltage regulators, to illustrate the possibilities of its application. (Materials and methods) Used general scientific research methods, methods: literary review, theory of automatic control, electrical engineering. We analyzed the literary sources. We have studied the methods and technical means of voltage regulation in electrical grid. (Results and discussion) A new method and device for adaptive automatic voltage regulation in the rural electrical grid with the use of a separate phase-by-phase installation of linear voltage regulators have been proposed. We considered an example of the implementation of the method in a rural electrical grid with an uneven load in phases. (Conclusions) It was revealed during the review of voltage regulation methods that adaptive automatic control methods are promising, involving control of voltage deviation at consumer inputs and determination of the regulation coefficient based on this. It was determined that the use of the proposed method and device provides a normalized voltage value at consumer inputs by means of adaptive automatic phase-by-phase voltage regulation in the electrical grid with separately phase-by-phase linear regulators controlled by an adaptive automatic voltage regulation system that generates control commands based on data processing from voltage sensors installed at control points of the grid, including at consumer inputs.