DESIGN AND DEVELOPMENT OF MATHEMATICAL MODELS OF ELECTRIC POWER SYSTEMS OF INDUSTRIAL ENTERPRISES

Abstract

Industrial production in our country is the main consumer of electrical energy (about 60% of all generated).Mining enterprises are the key enterprises for the budget formation of the Republic of Sakha(Yakutia). At the same time, they are very energy intensive. Thus, the share of diamond mining, goldmining and coal production accounts for about 75% of all generated electricity. Therefore, when designingelectric power systems of such industries, energy-saving technologies are increasingly beingintroduced. When designing power supply and electric drive systems for an industrial enterprise, it isnecessary to make many calculations and analyze a large number of circuits. This process is greatlysimplified by using computer simulation programs. In a computer model at the design stage, it is not"terrible" to make some kind of mistake, since the program will always tell you which parameter orwhich element is the cause of the error. Currently, individual computer programs designed to simulatecomplex technical systems have reached a level of modeling accuracy of up to 90–95%. Among suchprograms, the MatLab software package stands out, which allows developing both mathematical andphysical models. Real technical characteristics of production plants of industrial enterprises are usedfor modeling. As a result of modeling, it is possible to obtain information about such physical parametersof the electric power system as the levels of current, voltage, power; magnitude of short circuitcurrents; load charts; power quality indicators; deviations of the simulated values from the calculatedones, etc. Based on the calculations made, it is possible to issue recommendations to the energy servicesof industrial enterprises and the introduction of energy-saving technologies.