A VOLTAGE STABILIZATION SYSTEM FOR VOLTAGE SUPPLY INSTABILITY AND LOAD CURRENT FLUCTUATIONS

The article discusses the problems associated with improving the quality of electricity and ensuring the normal operation of industrial power supply systems with instability of the supply voltage and load current fluctuations. To eliminate these problems, a new type of controlled voltage regulator is proposed in the work instead of the well-known mechanical voltage regulators such as RPN and PBV. The results of the study of the quality of electricity and the efficiency of power supply systems in stationary and dynamic processes are presented. Integral characteristics for power supply systems with known and new controlled voltage regulators are given. The study was conducted in the Matlab environment on a model of a workshop transformer of the enterprise with an existing and proposed controlled voltage regulator with a capacity of 1000 kV·A and a voltage of 6 / 0.4 kV. The obtained results of numerical experiments with the instability of the supply voltage and load current fluctuations confirm that the proposed controlled voltage regulator has the ability to maintain a high value of the quality of electricity and the efficiency of power supply systems, as well as to maintain their normal operation and extend the service life of electrical equipment of power supply systems.