Efficiency estimation of industrial equipment in ore-dressing and processing enterprise

Abstract

The object of study is the Aikhal mining and processing plant. This enterprise is characterized by high-energy intensity and, in accordance with the legislation of the Russian Federation, requires energy audit inspections. The purpose of energy audit is to identify the inefficient use of resources by the enterprise and to propose measures to reduce it. The aim of the work is the analysis of measurements of the real operating mode of the enterprise and, as a result, the development of measures to optimize certain equipment groups. The following indicators of the quality of electricity were considered: Steady-state voltage deviation, evaluation of the power factor for each transformer substation, displacement power factor analysis, and evaluation of the additional power losses caused by the asymmetry of the current. After evaluating these parameters, it was possible to reduce the reactive power flowing through the packaged transformer substation. As a result, the use of compensating devices was proposed. In addition, the efficiency of the use of pumping units with throttle control was analyzed. The use of variable frequency drive was proposed to reduce the consumption of active power during hours when the pumps are not fully loaded. Both measures effectively reduce the cost of paying for electricity, which is important for an energy-intensive industrial enterprise. The following methods were used - processing and research of measurements from a real enterprise, analysis of proposed methods for optimizing the operation of equipment, comparison of technical indicators, economic comparison of options based on indicators such as Net present value, Internal Rate of return, Profitability index and Payback period.

The object of study is the Aikhal mining and processing plant. This enterprise is characterized by high-energy intensity and, in accordance with the legislation of the Russian Federation, requires energy audit inspections. The purpose of energy audit is to identify the inefficient use of resources by the enterprise and to propose measures to reduce it. The aim of the work is the analysis of measurements of the real operating mode of the enterprise and, as a result, the development of measures to optimize certain equipment groups. The following indicators of the quality of electricity were considered: Steady-state voltage deviation, evaluation of the power factor for each transformer substation, displacement power factor analysis, and evaluation of the additional power losses caused by the asymmetry of the current. After evaluating these parameters, it was possible to reduce the reactive power flowing through the packaged transformer substation. As a result, the use of compensating devices was proposed. In addition, the efficiency of the use of pumping units with throttle control was analyzed. The use of variable frequency drive was proposed to reduce the consumption of active power during hours when the pumps are not fully loaded. Both measures effectively reduce the cost of paying for electricity, which is important for an energy-intensive industrial enterprise. The following methods were used - processing and research of measurements from a real enterprise, analysis of proposed methods for optimizing the operation of equipment, comparison of technical indicators, economic comparison of options based on indicators such as Net present value, Internal Rate of return, Profitability index and Payback period.