Improving the quality of electricity in the power supply systems of the mineral resource complex with hybrid filter-compensating devices

Abstract

The urgency and necessity of choosing and justifying the structures of hybrid filter-compensating devices based on series and parallel active filters to improve the quality of electricity in the power supply systems of enterprises of the mineral resource complex is shown. Mathematical models of hybrid filter compensating devices based on parallel and series active filters have been developed. Based on these mathematical models, computer simulation models of the indicated hybrid structures have been developed. The results of simulation showed the effectiveness of the correction of power quality indicators in terms of reducing the level of higher harmonics of current and voltage, as well as voltage deviations. The degree of influence of filter-compensating devices on the power quality indicators, which determine the continuity and stability of the technological process at the enterprises of the mineral resource complex, have been revealed. It has been established that a hybrid filter-compensating device based on a parallel active filter can reduce the level of higher harmonics of current and voltage by more than 90 and 70 %, respectively, and based on a series active filter, it can reduce the level of higher harmonics of voltage by more than 80 %. Based on the simulation results, the possibility of compensating for the reactive power of a hybrid structure based on parallel active and passive filters has been revealed. The possibility of integrating hybrid filter-compensating devices into more complex multifunctional electrical systems for the automated improvement of the quality of electricity is substantiated, as well as the expediency and prospects of their use in combined power supply systems based on the parallel operation of centralized and autonomous sources of distributed generation.

Efficiency Increase of Energy Systems in Oil and Gas Industry by Evaluation of Electric Drive Lifecycle

“…Evaluation of the technical condition and resource of unit was carried out using ANN as an assessment for the possibility of failure-free ED functioning. Determination of the probability for failure-free ED operation can be represented as the construction of Equation (1). It is based on the retrospective database with the requirements for the relative error, or for limit of the confidence period of prediction λ at p ≥ 95%-less than 5% [30].…”

“…Prospects for the development of enterprises in the fuel, energy and mineral resources industries in the context of growing economic, environmental and technical requirements are associated with an increase in the efficiency of electromechanical equipment. Such devices, including electric motors and electric drives (ED), account for up to 85% [1][2][3] of electricity consumption and are the main production unit in automated and robotic systems.…”

A Soft Sensor for Measuring the Wear of an Induction Motor Bearing by the Park’s Vector Components of Current and Voltage

“…where i max -maximum amplitude value of phase current, A; ω-power angular frequency, rad/s; t-time, s. In a coordinate system-dq, the generalized vector of I S current is written as (5) and is valid for (1)-(4).…”

“…The power supply industry is no exception. Automated electric drives are getting to become a major part of any industry, and their efficiency defines the growth and development strategy for companies [ 4 , 5 ]. The digital transformation of the energy sector is rapidly bringing new solutions to the market [ 6 , 7 ].…”

Identification of the Technical Condition of Induction Motor Groups by the Total Energy Flow

“…The experiments in this paper have been performed only on model data. According to the simplified structure of the power supply system (Figure 1), its simulation model (Figure 5), consisting of mathematical models of an induction motor [40,41], nonlinear load [42] and filter-compensating device [43] is implemented. This simulation model (Figure 5) includes models of three induction motors.…”