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Yaroslav E. Shklyarskiy
Yaroslav E. Shklyarskiy
Professor, Ph.D., Dr.Sci.
Saint Petersburg Mining University
Professor, Ph.D., Dr.Sci.
Saint Petersburg Mining University
174
Total cited
9
Hirsch index

Articles

Energy industry
  • Date submitted
    2021-03-11
  • Date accepted
    2021-04-12
  • Date published
    2022-04-29

Operation mode selection algorithm development of a wind-diesel power plant supply complex

The power supply system is affected by external disturbances, so it should be stable and operate normally in compliance with power quality standards. The power supply system goes into abnormal modes operation when, after a short-term failure or disturbance, it does not restore normal mode. The electrical complex, which includes a wind power plant, as well as a battery and a diesel generator connected in parallel, is able to provide reliable power supply to consumers which meets the power quality indicators. The article develops an algorithm that is implemented by an automatic control system to select the operating mode depending on climatic factors (wind) and the forecast of energy consumption for the day ahead. Forecast data is selected based on the choice of the methods, which will have the smallest forecast error. It is concluded that if the energy consumption forecast data is added to the automatic control system, then it will be possible to increase the efficiency of the power supply complex. In the developed algorithm the verification of normal and abnormal modes of operation is considered based on the stability theory. The criteria for assessing the normal mode of operation are identified, as well as the indicators of the object’s load schedules for assessing the load of power supply sources and the quality standards for power supply to consumers for ranking the load by priority under critical operating conditions and restoring normal operation are considered.

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Yaroslav E. Shklyarskiy, Daria E. Batueva (2022) Operation mode selection algorithm development of a wind-diesel power plant supply complex. Journal of Mining Institute. Vol 253. p. 115-126. DOI: 10.31897/PMI.2022.7
Electromechanics and mechanical engineering
  • Date submitted
    2021-03-11
  • Date accepted
    2021-05-21
  • Date published
    2021-09-20

The influence of solar energy on the development of the mining industry in the Republic of Cuba

Cuba is traditionally considered a country with an underdeveloped industry. The share of the mining and metallurgical industries in the gross industrial production of the republic is small – about 3 % of GDP. The development of deposits and the extraction of nickel ores is an important sector of the economy of the Republic of Cuba, since the largest reserves of nickel and cobalt on the North American continent are located on the territory of the country. The development of the country energy system can serve as a growth factor in this sector of the economy. Due to climatic features and impossibility of integrating new capacities into the energy system through the construction of hydroelectric power plants, solar energy is a promising direction. Determining the feasibility of using solar tracking systems to increase the generation of electricity from solar power plants is one of the main challenges faced by engineers and renewable energy specialists. Currently, there are no solar tracking systems in Cuba that can provide information to assess the effectiveness of this technology in the country. The lack of the necessary technologies, as well as the high cost of developing solar power plants with tracking systems, limit the widespread introduction of such complexes. Hence follows the task of creating an inexpensive experimental model that allows assessing the effectiveness of tracking systems in specific weather conditions of the Republic of Cuba. This model will allow in future to increase the efficiency of electrical complexes with solar power plants, which provide power supply to the objects of the mineral resource complex and other regions.

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Yaroslav E. Shklyarskiy, Daniel Díaz Guerra, Emiliia V. Iakovleva, Anton Rassõlkin (2021) The influence of solar energy on the development of the mining industry in the Republic of Cuba. Journal of Mining Institute. Vol 249. p. 427-440. DOI: 10.31897/PMI.2021.3.12
Electromechanics and mechanical engineering
  • Date submitted
    2016-10-13
  • Date published
    2015-03-01

Electric network equivalenting in the presence of high harmonics

The article deals with equivalenting of complex electrical networks of industrial enterprises. In the article the different methods of averaging equivalenting elements in power systems are compared, specifically, the method of moments, the equivalent section method, and the average value method. The current value of the capacitor bank as part of the electrotechnical complex of the enterprise is the main criterion for determining the equivalenting error of the electric network. The equivalenting in the presence of high harmonics in electrical networks of the enterprise is considered by applying the methods under discussion. Comparison of these equivalenting methods in the presence of high harmonics shows that the error in the calculation of capacitor bank current ranges from 3,8 to 14,7 %. In addition, the most accurate method for determining the capacitor bank overload is the method of moments.

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Ankhel' Oskar Kolumbiya Navarro, Ya. E. Shklyarskii, A. N. Skam'in (2015) Electric network equivalenting in the presence of high harmonics. Journal of Mining Institute. Vol 213. p. 31.
Mining electromechanics and mining equipment
  • Date submitted
    2016-11-21
  • Date published
    2012-02-01

Efficient formation of the complex electrical load schedule of mining plant

In this article considered the rational formation of the complex electrical load schedule. Application of this method allows to achieve savings in the payment  of electricity and increase  the possibility of energy transfer. The effect is achieved by uniform distribution of energy consumption during the day.

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Ya. E. Shklyarskii, A. A. Bragin (2012) Efficient formation of the complex electrical load schedule of mining plant. Journal of Mining Institute. Vol 196. p. 281.
Mining electromechanics and mining equipment
  • Date submitted
    2016-11-21
  • Date published
    2012-02-01

Evaluation of phase relationships harmonics frequency drives

In article the new approach to modelling of processes arising in the presence of the frequency electric drives is offered, offering to consider corners of shift of phases on various harmonics. Research of power characteristics of a  frequency drive was spent on  the basis of the  spent experiment.

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Ya. E. Shklyarskii, V. S. Dobush (2012) Evaluation of phase relationships harmonics frequency drives. Journal of Mining Institute. Vol 196. p. 285.
Economical problems in use of subsurface and development of the mineral resources complex
  • Date submitted
    2016-11-28
  • Date published
    2011-06-01

Reactive power compensation optimization and its optimization in the electrical network complex

The optimization of reactive power compensation in the presence of harmonics in the electrical network complex is a complicated computational problem. The authors propose a calculation method that significantly reduce the computation procedure and still get the desired result as the choice of device parameters for reactive power compensation and harmonics filters.

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Ya. E. Shklyarskii, I. Gonsales Palau (2011) Reactive power compensation optimization and its optimization in the electrical network complex. Journal of Mining Institute. Vol 194. p. 349.
Mining machine, electrical engineering and electromechanics
  • Date submitted
    2016-12-07
  • Date published
    2011-01-01

Reduction methods of high harmonics influence on the electric equipment operation

This work contains brief analysis of high harmonics reduction methods. It is offered to make a choice between reduction methods of high harmonics influence on condenser batteries depending on factors of harmonics occurrence. Definition algorithm for the most effective method of high harmonics reduction on condenser batteries operation is created.

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Ya. E. Shklyarskii, A. N. Skam'in (2011) Reduction methods of high harmonics influence on the electric equipment operation. Journal of Mining Institute. Vol 189. p. 121.
Electromechanics and mechanical engineering
  • Date submitted
    2016-12-29
  • Date published
    2016-06-01

Impact of the load curve on losses In the power supply network of the company

In the recent years, the researchers and experts in the field of energetics often mention in their publications a need to reduce power transmission losses. Among different ways to accomplish this goal the method of the company load leveling stands out due to its simplicity, accessibility and efficiency. The paper proposes a new assessment factor for additional power losses in distribution network. It is known that dispersion of the load curve correlates with the amount of power losses, which is why the proposed factor is put in a position of dependency on the shape of the load curve of the company. It is demonstrated that the proposed factor can help to identify without any strain a need in technical measures for levelling the load curve of the company and to assess efficiency thereof.

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Ya. E. Shklyarskii, S. Pirog (2016) Impact of the load curve on losses In the power supply network of the company. Journal of Mining Institute. Vol 222. p. 858. DOI: 10.18454/pmi.2016.6.858
Electromechanics and mechanical engineering
  • Date submitted
    2018-11-05
  • Date published
    2019-06-25

Non-linear Electrical Load Location Identification

The article discusses the issues of identifying the location of non-linear loads in electrical networks which makes the main contribution to the distortion of the non-sinusoidal voltage and current in the distribution network of an industrial enterprise, including mining enterprises. The existing methods for determining the location of the source of higher harmonic components in voltage and current are considered, their advantages and disadvantages are revealed. The main disadvantages of the methods used include the low accuracy and incorrectness of their use in existing enterprises. When developing a new method, the authors were faced with the task of simplicity of its use in the conditions of industrial operation of electrical equipment and the absolute correctness of the results obtained. The proposed method of identifying the source of higher harmonics is based on the variation of the parameters of the power system, in particular, the change in resistance of power transformers taking into account their transformation ratio. It is shown that by varying the transformation ratio during regulation under load, the total coefficient of the harmonic components of the voltage changes. Based on the constructed dependencies, the variation of the derivative of this function with different variations of the parameters of sources of higher harmonics is analyzed and a method is developed that allows determining the share contribution of consumers to the total harmonic component of the voltage.

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S. Pirog, Ya. E. Shklyarskiy, A. N. Skamyin (2019) Non-linear Electrical Load Location Identification. Journal of Mining Institute. Vol 237. p. 317. DOI: 10.31897/pmi.2019.3.317