Application of methods for the justification of energy saving measures in the power supply systems of mining enterprises

The paper uses the methods of mathematical modeling and instrumental control to justify the introduction of energy-saving measures and technical solutions in the power supply systems of mining enterprises. An assessment of the implementation of energy saving methods in electric drive and power supply systems at mining enterprises demonstrated the possibility of achieving a multiplier economic effect with the right approach to the implementation and subsequent operation of energy-saving technologies. The energy saving potential was shown in the industry in general, and in mining enterprises in particular. For example, in some areas of enterprises, such measures as reactive power compensation, the introduction of automated electric drive systems, the development and pilot operation of power quality control systems with continuous recording of indicators were considered. The mathematical modeling method was implemented using the MatLab software package which has proven itself in engineering calculations around the world. Instrumental control and evaluation of power quality indicators were carried out in accordance with the requirements of GOST RF 32144-2013. As a result of the potential optimization of individual power supply systems, the estimated total economic effect due to energy savings was obtained. The figure approached 28 million rubles per year, which is on average 20% of the cost of electricity consumption of the considered sites of mining enterprises.