Abstract
The issue of increasing energy efficiency and energy saving is of great importance for the countries with high energy intensity of the gross domestic product, including Russia and the rest of the Commonwealth of Independent States. The measures adopted in Russia on the federal and regional level as part of the State Program on Energy Efficiency and Energy Development are focused on reducing the energy intensity of Russia’s gross domestic product and introduce sustainable practices on energy saving in Russia’s commercial and budget sectors. This paper presents a case study describing the way to reduce electric power losses in a system of power supply (SPS) of an industrial enterprise. In particular, the case study determines the level of the higher harmonic components of current and voltage at the existing enterprise for the production of reinforced concrete products. The results of the experiment were reproduced using a simulation model of the power supply system in the Matlab/Simulink package. A comparative analysis of using a passive and hybrid filter compensating device to reduce the level of the higher harmonics of current and voltage was carried out by means of modeling. The active losses in the SPS from non-sinusoidal mode are calculated. In addition, the economic effect of using the proposed method is estimated.
Highlights
The key role in improving economic performance, energy security, and environmental sustainability, as well as mitigating climate change, is played by energy efficiency (Fawcett and Killip, 2019; Foggia, 2018; Ingrao et al, 2018; Dadzie et al, 2018)
It can be seen from the diagram that the main receivers with a non-linear voltage-voltage characteristic are variable frequency drives (VEDs) of various capacities connected to one section of the bus of the sub-station 630/6/0.4, where the transformer is used as a step-down and matching
On the basis of the conducted research, we would like to make the following conclusions: 1. The built simulation model in Matlab/Simulink based on the real system of power supply (SPS) showed good convergence of the results of experimental research and modeling in the assessment of the main indicators of electromagnetic compatibility (EMC), which served as the basis for applying filter compensating devices (FCD) to reduce the level of higher harmonics (HH) current and voltage; 2
Summary
The key role in improving economic performance, energy security, and environmental sustainability, as well as mitigating climate change, is played by energy efficiency (Fawcett and Killip, 2019; Foggia, 2018; Ingrao et al, 2018; Dadzie et al, 2018). The modern research convincingly shows that the introduction of energy saving technologies leads to lower costs and increases product competitiveness, but it contributes to improving the overall sustainability of the fuel and energy complex and the ecological situation, reducing the cost of introducing additional capacity, and removing barriers to economic development by reducing technological limitations (Kim, 2017; Aslani et al, 2019; Chowdhury et al, 2018). The model described and calculated in the paper is applicable at any industrial enterprise and demonstrates its effectiveness to reduce energy losses in electric power systems
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