Calculating the cost-effectiveness of adopting symmetrization equipment in a motor-carrying electrical complex

This paper covers the key aspects of developing a method for calculating the cost-effectiveness of adopting symmetrization equipment in a motor-carrying electrical complex. Voltage asymmetry is observed in grids of any voltage class. Analysis of earlier studies into voltage asymmetry in the operational 0.4; 6; and 35-kV grids in Zabaikalsky Krai shows that GOST 32144-2013, an interstate standard for the quality of electricity, is being breached systematically on a large scale. Analyzed grids demonstrate fairly high levels of voltage asymmetry. Voltage asymmetry has negative electromagnetic and process-related effects: additional power losses, faster insulation aging, and premature electrical equipment failure. This is why, minimizing voltage asymmetry is imperative, and so is cost-effectiveness analysis of adopting symmetrization equipment in the electrical complex. The developed method is comprehensive and takes into account the cost-effectiveness components, evaluation of the effect of adopting them, as well as the variability of their applied use. The calculation method is intended to help make sound decisions on whether symmetrization equipment is necessary for a motor-carrying electrical complex. The method is meant to test the feasibility of adopting symmetrization equipment to normalize voltage in grids and improve the operational reliability of asynchronous motors. The calculation method has been tested in an electricity delivery segment in the village of Taptugary, Mogochinsky Municipality, Zabaikalsky Krai. The paper analyzes and discusses the obtained results and draws appropriate conclusions.