Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388039
Alla V. Vinogradova, A. Lazarev, P. Kharlamov
At the present stage of the global economy development, identifying and predicting unfavourable trends in the organization’s development, including the prediction of bankruptcy, is becoming extremely important. The most accurate prediction can be made using various software applications. The paper describes the software for data analysis and prediction of bankruptcy of organizations in the fuel and energy complex, developed by the authors, its algorithm and modular structure. Its principle of operation is based on predicting the Altman’s Z-Score values in the medium term for the organization of the sector using machine learning, neural networks, and fuzzy models.
{"title":"Software for data analysis and prediction of bankruptcy of organizations in the fuel and energy complex","authors":"Alla V. Vinogradova, A. Lazarev, P. Kharlamov","doi":"10.1109/REEPE51337.2021.9388039","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388039","url":null,"abstract":"At the present stage of the global economy development, identifying and predicting unfavourable trends in the organization’s development, including the prediction of bankruptcy, is becoming extremely important. The most accurate prediction can be made using various software applications. The paper describes the software for data analysis and prediction of bankruptcy of organizations in the fuel and energy complex, developed by the authors, its algorithm and modular structure. Its principle of operation is based on predicting the Altman’s Z-Score values in the medium term for the organization of the sector using machine learning, neural networks, and fuzzy models.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127308955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388011
A. Zabirov, V. Yagov, M. Lexin, I. Molotova
The work aims to study the beginning of an intensive heat transfer regime during quenching process, when high-temperature bodies are cooled in liquids. This process occurred in numerous applications such as metal treatment and NPP safety systems. The experiments were carried out by cooling a high-temperature nickel sphere in subcooled liquids with different subcoolings to the saturation temperature. The experiments were conducted in pure water and in water-surfactant solutions with various concentrations under atmospheric pressure. The surfactant was sulfonol (alkylbenzene sulfonate), which added to cooling water. The concentrations of sulfonol were 0.1, 0.25, 0.5, 1 and 2%. The obtained temperature-time dependences (cooling thermograms) and data on the transition temperatures made it possible to reveal the regularities of the influence of sulfonol concentration in the cooling water on the beginning of the intensive cooling regime. Furthermore, experiments have demonstrated a strong influence of surface condition, its oxidation and contamination.
{"title":"Effect of surfactant concentration on the beginning of intensive cooling regime in subcooled water","authors":"A. Zabirov, V. Yagov, M. Lexin, I. Molotova","doi":"10.1109/REEPE51337.2021.9388011","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388011","url":null,"abstract":"The work aims to study the beginning of an intensive heat transfer regime during quenching process, when high-temperature bodies are cooled in liquids. This process occurred in numerous applications such as metal treatment and NPP safety systems. The experiments were carried out by cooling a high-temperature nickel sphere in subcooled liquids with different subcoolings to the saturation temperature. The experiments were conducted in pure water and in water-surfactant solutions with various concentrations under atmospheric pressure. The surfactant was sulfonol (alkylbenzene sulfonate), which added to cooling water. The concentrations of sulfonol were 0.1, 0.25, 0.5, 1 and 2%. The obtained temperature-time dependences (cooling thermograms) and data on the transition temperatures made it possible to reveal the regularities of the influence of sulfonol concentration in the cooling water on the beginning of the intensive cooling regime. Furthermore, experiments have demonstrated a strong influence of surface condition, its oxidation and contamination.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127736622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388006
M. Sultanov, E. Zenina, O. Zhelyaskova, D. S. Norov
Microgrid technology is increasingly gaining momentum for implementation around the world. Innovative development offers a high-quality and efficient distribution of electricity to the consumer from low-power generation and renewable energy sources. In the article the features of microgrid work that can affect the reliability of power supply are discussed. The diagnosis and management of such systems and their introduction into the common power network contribute to the improvement of the entire operation of the power system, which leads to its efficient and reliable operation.
{"title":"Microgrid Impact Analysis on Power Supply System","authors":"M. Sultanov, E. Zenina, O. Zhelyaskova, D. S. Norov","doi":"10.1109/REEPE51337.2021.9388006","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388006","url":null,"abstract":"Microgrid technology is increasingly gaining momentum for implementation around the world. Innovative development offers a high-quality and efficient distribution of electricity to the consumer from low-power generation and renewable energy sources. In the article the features of microgrid work that can affect the reliability of power supply are discussed. The diagnosis and management of such systems and their introduction into the common power network contribute to the improvement of the entire operation of the power system, which leads to its efficient and reliable operation.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123008733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388016
O. Sigitov, N. Chemborisova
Installed capacity of renewable energy sources as part of electric power systems, in particular wind farms, is growing rapidly. The Russian Federation has also adopted a set of legislative measures aimed for increasing the installed capacity of wind farms. In this regard, the paper devoted to assessing the impact of wind farms on active power control range of traditional power plants. The paper presents calculation results that make it possible to assess the fluctuations regularity of wind farms generation schedule over a long period of time. Numerical results were obtained using the Microsoft Excel software package.
{"title":"Wind Farms Generation Deviation in Electric Power System","authors":"O. Sigitov, N. Chemborisova","doi":"10.1109/REEPE51337.2021.9388016","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388016","url":null,"abstract":"Installed capacity of renewable energy sources as part of electric power systems, in particular wind farms, is growing rapidly. The Russian Federation has also adopted a set of legislative measures aimed for increasing the installed capacity of wind farms. In this regard, the paper devoted to assessing the impact of wind farms on active power control range of traditional power plants. The paper presents calculation results that make it possible to assess the fluctuations regularity of wind farms generation schedule over a long period of time. Numerical results were obtained using the Microsoft Excel software package.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127137056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9387989
N. O. Strelkov, V. V. Krutskikh
in this article we discuss the usage of modern R programming language for educational and scientific calculations. This language is very popular in data science, mathematical statistics and other calculations. Here we start with static RMarkdown documents including Markdown markup and code written on R language in the same file. Then we consider dynamic applications named Shiny which contain R-code for calculations and interaction with user. Shiny allows one to significantly improve the presentation of educational or scientific material to the audience in person or remotely through web technologies.
{"title":"Usage of R Language for Universal Calculations and Simulations","authors":"N. O. Strelkov, V. V. Krutskikh","doi":"10.1109/REEPE51337.2021.9387989","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9387989","url":null,"abstract":"in this article we discuss the usage of modern R programming language for educational and scientific calculations. This language is very popular in data science, mathematical statistics and other calculations. Here we start with static RMarkdown documents including Markdown markup and code written on R language in the same file. Then we consider dynamic applications named Shiny which contain R-code for calculations and interaction with user. Shiny allows one to significantly improve the presentation of educational or scientific material to the audience in person or remotely through web technologies.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"209 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123025163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9387996
R. Romanov, Tatyana V. Myasnikova, Igor A. Savostianov, O. Sveklova, Elmira M. Artukaeva
The article is devoted to the issues of increasing the power and torque on the shaft of a subminiature electric motor with excitation by permanent magnets based on rare earth materials. The essential feature of the design of the electric motor in question is a glass stator made by polycapillary fiber technology. The motor excitation system is a two-pole permanent magnet. The values of magnetic induction and electromagnetic moment for several variants of the rotor design were obtained by finite element modeling.
{"title":"Electromagnetic Moment Increasing of Superminiature Electric Motor with Excitation by Rare Earth Permanent Magnets","authors":"R. Romanov, Tatyana V. Myasnikova, Igor A. Savostianov, O. Sveklova, Elmira M. Artukaeva","doi":"10.1109/REEPE51337.2021.9387996","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9387996","url":null,"abstract":"The article is devoted to the issues of increasing the power and torque on the shaft of a subminiature electric motor with excitation by permanent magnets based on rare earth materials. The essential feature of the design of the electric motor in question is a glass stator made by polycapillary fiber technology. The motor excitation system is a two-pole permanent magnet. The values of magnetic induction and electromagnetic moment for several variants of the rotor design were obtained by finite element modeling.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127660022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388052
Danil K. Buslaev, Julia K. Ochkovskaya, L. D. Ziles
This paper presents results of investigating of ferroresonance occurrence conditions in a simple RLC with a nonlinear inductance. The physical approach is used for this investigation. Ferroresonance is considered as a periodical process existing in the circuit. The real magnetizing curve of the inductance has been approximated by piecewise-linear function. Ferroresonance thus is a succession of transients with each of the inductance values, defined by approximation. The created model of ferroresonance phenomenon defines its main characteristics. Based on these characteristics, investigation resulted in analytical equations determining boundaries of ferroresonance occurrence area as a function of the circuit parameters.
{"title":"Ferroresonance Occurrence Conditions in a Simple Nonlinear Circuit","authors":"Danil K. Buslaev, Julia K. Ochkovskaya, L. D. Ziles","doi":"10.1109/REEPE51337.2021.9388052","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388052","url":null,"abstract":"This paper presents results of investigating of ferroresonance occurrence conditions in a simple RLC with a nonlinear inductance. The physical approach is used for this investigation. Ferroresonance is considered as a periodical process existing in the circuit. The real magnetizing curve of the inductance has been approximated by piecewise-linear function. Ferroresonance thus is a succession of transients with each of the inductance values, defined by approximation. The created model of ferroresonance phenomenon defines its main characteristics. Based on these characteristics, investigation resulted in analytical equations determining boundaries of ferroresonance occurrence area as a function of the circuit parameters.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121301540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9387988
V. Kostin, V. Serikov, T. S. Ivanova, A. Krivenko
The analysis of the operation modes of power supply systems with nonlinear load connected to a transformer winding with the secondary winding and cleavage of the linear load and a capacitor bank connected to another transformers windings performed. The modes of daily variation of the linear load and the corresponding regulation of the capacitor bank power for a typical range of 110/10 kV transformers with a power of 25 SO MVA are considered. It has been established that the allocation of a nonlinear load to a separate bus section improves the quality of the voltage on the linear load buses and reduces the current overload of the capacitors with higher harmonics currents. It is shown that switching reactors in series with capacitors eliminates problems with the quality of voltage at the linear load.
{"title":"Research of power supply system modes with nonlinear and linear loads connected to different winding of the transformer","authors":"V. Kostin, V. Serikov, T. S. Ivanova, A. Krivenko","doi":"10.1109/REEPE51337.2021.9387988","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9387988","url":null,"abstract":"The analysis of the operation modes of power supply systems with nonlinear load connected to a transformer winding with the secondary winding and cleavage of the linear load and a capacitor bank connected to another transformers windings performed. The modes of daily variation of the linear load and the corresponding regulation of the capacitor bank power for a typical range of 110/10 kV transformers with a power of 25 SO MVA are considered. It has been established that the allocation of a nonlinear load to a separate bus section improves the quality of the voltage on the linear load buses and reduces the current overload of the capacitors with higher harmonics currents. It is shown that switching reactors in series with capacitors eliminates problems with the quality of voltage at the linear load.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116953023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388034
R. Bulatov, R. Nasyrov, M. V. Burmeyster, M. Polyakov, I. Berdyshev, Timur A. Bidzhiev
This article focuses on the application of a battery storage system in order to reduce fluctuations in the power output of a wind farm integrated into the power system. The article shows the development of an algorithm that allows determining the power and capacity of the battery energy storage system to ensure a decrease in power output fluctuations, taking into account the limitations related to the peculiarities of the wind farm and energy storage operations. The developed algorithm was applied to a model of a real electrical network including wind farms. At the end of the article, a comparative analysis of the results obtained using the developed algorithm against the results obtained using the algorithm based on low frequencies was carried out.
{"title":"Application of a Battery Energy Storage System to Reduce Fluctuations in the Power Output of a Wind Farm Integrated into the Power System","authors":"R. Bulatov, R. Nasyrov, M. V. Burmeyster, M. Polyakov, I. Berdyshev, Timur A. Bidzhiev","doi":"10.1109/REEPE51337.2021.9388034","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388034","url":null,"abstract":"This article focuses on the application of a battery storage system in order to reduce fluctuations in the power output of a wind farm integrated into the power system. The article shows the development of an algorithm that allows determining the power and capacity of the battery energy storage system to ensure a decrease in power output fluctuations, taking into account the limitations related to the peculiarities of the wind farm and energy storage operations. The developed algorithm was applied to a model of a real electrical network including wind farms. At the end of the article, a comparative analysis of the results obtained using the developed algorithm against the results obtained using the algorithm based on low frequencies was carried out.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117078741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388076
V. A. Kozhevnikov, S. K. Popov
Used petroleum products are a valuable energy resource that can be effectively used as boiler and furnace fuel. In this regard, the tasks of developing energy-efficient technical solutions and a regulatory framework for the environmentally friendly employment of used petroleum products as fuel are considered urgent. The organizational and technical aspects that should be taken into account when solving these problems in order to obtain an energy-saving effect are formulated. The results of the research form the basis for the development of a regulatory document establishing technical conditions for the application of boiler and furnace fuels from used petroleum products.
{"title":"Energy efficient employment of Used Petroleum Products as fuel based on environmental norms","authors":"V. A. Kozhevnikov, S. K. Popov","doi":"10.1109/REEPE51337.2021.9388076","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388076","url":null,"abstract":"Used petroleum products are a valuable energy resource that can be effectively used as boiler and furnace fuel. In this regard, the tasks of developing energy-efficient technical solutions and a regulatory framework for the environmentally friendly employment of used petroleum products as fuel are considered urgent. The organizational and technical aspects that should be taken into account when solving these problems in order to obtain an energy-saving effect are formulated. The results of the research form the basis for the development of a regulatory document establishing technical conditions for the application of boiler and furnace fuels from used petroleum products.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"363 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114848139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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