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Stefan Vöth
Stefan Vöth
Head of Department, Ph.D., Dr.Sci., Professor
George Agricola Graduate School of Technical Sciences
Head of Department, Ph.D., Dr.Sci., Professor
George Agricola Graduate School of Technical Sciences
Бохум
Germany
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Articles

Economic Geology
  • Date submitted
    2021-05-12
  • Date accepted
    2022-05-16
  • Date published
    2022-07-14

Application of the cybernetic approach to price-dependent demand response for underground mining enterprise electricity consumption

The article considers a cybernetic model for the price-dependent demand response (DR) consumed by an underground mining enterprise (UGME), in particular, the main fan unit (MFU). A scheme of the model for managing the energy consumption of a MFU in the DR mode and the implementation of the cybernetic approach to the DR based on the IoT platform are proposed. The main functional requirements and the algorithm of the platform operation are described, the interaction of the platform with the UGME digital model simulator, on which the processes associated with the implementation of the technological process of ventilation and electricity demand response will be simulated in advance, is shown. The results of modeling the reduction in the load on the MFU of a mining enterprise for the day ahead are given. The presented solution makes it possible to determine in advance the necessary power consumption for the operation of the main power supply unit, manage its operation in an energy-saving mode and take into account the predicted changes in the planned one (e.g., when men hoisting along an air shaft) and unscheduled (e.g., when changing outdoor air parameters) modes. The results of the study can be used to reduce the cost of UGME without compromising the safety of technological processes, both through the implementation of energy-saving technical, technological or other measures, and with the participation of enterprises in the DR market. The proposed model ensures a guaranteed receipt of financial compensation for the UGME due to a reasonable change in the power consumption profile of the MFU during the hours of high demand for electricity, set by the system operator of the Unified Energy System.

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Aleksandr V. Nikolaev, Stefan Vöth, Aleksey V. Kychkin (2022) Application of the cybernetic approach to price-dependent demand response for underground mining enterprise electricity consumption. Journal of Mining Institute. DOI: 10.31897/PMI.2022.33
Electromechanics and mechanical engineering
  • Date submitted
    2017-07-07
  • Date published
    2017-10-25

Multiphysical model of heterogenous flow moving along а channel of variable cross-section

The article deals with the problem aimed at solving the fundamental problems of developing effective methods and tools for designing, controlling and managing the stream of fluid flowing in variable-section pipelines intended for the production of pumping equipment, medical devices and used in such areas of industry as mining, chemical, food production, etc. Execution of simulation modelling of flow motion according to the scheme of twisted paddle static mixer allows to estimate the efficiency of mixing by calculating the trajectory and velocities of the suspended particles going through the mixer, and also to estimate the pressure drop on the hydraulic flow resistance. The model examines the mixing of solids dissolved in a liquid at room temperature. To visualize the process of distributing the mixture particles over the cross-section and analyzing the mixing efficiency, the Poincaréplot module of the COMSOL Multiphysics software environment was used. For the first time, a multi-physical stream of heterogeneous flow model has been developed that describes in detail the physical state of the fluid at all points of the considered section at the initial time, takes into account the design parameters of the channel (orientation, dimensions, material, etc.), specifies the laws of variation of the parameters at the boundaries of the calculated section in conditions of the wave change in the internal section of the working chamber-channel of the inductive peristaltic pumping unit under the influence of the energy of the magnetic field.

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M. A. Vasil'eva, S. Feit (2017) Multiphysical model of heterogenous flow moving along а channel of variable cross-section. Journal of Mining Institute. Vol 227. p. 558. DOI: 10.25515/pmi.2017.5.558