ASSESSMENT OF ENERGY EFFICIENCY AND POSSIBILITY OF USE IN THE NETWORKS OF INDUSTRIAL ENTERPRISES VOLTAGE STABILIZER WITH ENERGY SAVING FUNCTION
Authors:   Candidate of Technical Sciences, Associate Professor, Almaty University of Power Engineering and Telecommunications, Department Almaty, Kazakhstan, Аitzhanov N.M. ,   nurgali53@mail.ru,   https://orchid.org/0000-0001-7482-4828, Оngar B. ,   Doctor of Philosophy (PhD), Associate Professor Kazakh Academy of Transport and Communications, Almaty, Kazakhstan; ongar_bulbul@mai.ru; https://orcid.org/0000-0002-8333-8343;, Bissenbaeyev P.А. ,   master student, Kazakh Academy of Transport and Communications, Almaty, Kazakhstan; parasatbisenbaev@gmail.com; https://orcid.org/0000-0001-8121-004X;, Baitenov Е.S. ,   master student, Kazakh Academy of Transport and Communications, Almaty, Kazakhstan; erkinbek.baytenov@bk.ru; https://orcid.org/0000-0002-7460-3539, Zhanibekuly А. ,   master student, Kazakh Academy of Transport and Communications, Almaty, Kazakhstan; zh_ayan@mail.ru; https://orcid.org/0000-0002-8547-2968
Published: December 2020

The energy-saving voltage stabilizer belongs to the field of electrical engineering and can be used to supply power to electrical equipment, drives, motors, lighting networks, power supplies for communication systems, automation and telematics in order to optimize the operation of electrical equipment and energy saving. Reducing power consumption can be achieved by eliminating the consumption of the load unnecessary for normal operation of energy, and by reducing the amount of current and energy losses in the supply network. In addition, the service life of lighting and household electrical appliances will increase, which will operate at normal and not increased voltage. When the voltage decreases and the load consumes the same power, the current in the network increases in proportion to the decrease in voltage, which will cause overheating of the network elements to the place where the stabilizer is installed, the operation of automatic devices, fuses and other protection elements, i.e. interruption in power supply to consumers. Any stabilizer is not a source of energy, and its use with a significant decrease in the voltage in the network (power shortage) does not give the desired result. ECE of such stabilizers is 95-97%, that is, up to 5% of energy is lost in the regulating device, which limits their use in order to save energy, as well as increase the weight, dimensions and cost. The proposed device is based on the use as a regulating body of a low-power transformer operating in the autotransformer mode with a transformation ratio close to 1. By switching the high-voltage winding of the transformer under load without breaking the circuit, 3 operating modes of the device are obtained. Control devices are used: to reduce electricity consumption by up to 20% in residential and public buildings, shops, outdoor lighting networks; to ensure the normal operation of numerically controlled machines, technological lines, etc. It has no analogs in terms of simplicity of the scheme, payback (about two years), and reliability of operation. It will reduce the unnecessary energy consumption allowed worldwide by at least 10% and network losses by up to 40%.