Vestnik MÈI最新文献

{"title":"A Comparative Analysis of Electricity Load Profiles in Some European and Asian Countries. Part 2. Daily Load Profiles","authors":"Ye Htut Myat, Galaktion Shvedov","doi":"10.24160/1993-6982-2023-4-50-61","DOIUrl":"https://doi.org/10.24160/1993-6982-2023-4-50-61","url":null,"abstract":"Developing countries are currently characterized by rapid electrification of their population, and domestic electrical appliances are becoming more energy efficient. These processes are superimposed on the digitalization of the economy, development of the Internet of energy, and optimization of electricity consumption to reduce carbon emissions. It is impossible to determine the strategy for the development of the electric power industry in general and the electric grid complex in particular without accurately simulating the power consumption processes in the form of electricity load profiles. This article presents the results from a review of publications, statistical research materials, and the results of various activities aimed at monitoring the daily electricity consumption both in power systems as a whole and in their individual elements, including distribution networks and individual household consumers. The daily electricity load profiles of the following countries are given: Myanmar, Laos, Sri Lanka, Bangladesh, Tajikistan, Kyrgyzstan, Saudi Arabia, Russian Federation, United Kingdom, Sweden, Germany, Portugal, and Italy. For each electricity load profile, the primary source of initial information is indicated. In developed countries, the electricity consumption profile during the daytime is almost uniform in nature. In winter, the evening maximum slightly exceeds the morning one. In summer, the daily maximum shifts to the morning or afternoon hours. In developing countries, a significant decrease of electricity consumption is observed during the daytime. In all seasons, the daily maximum falls on the evening hours. In European countries and Russia, the maximum daily consumption by household consumers is in the evening hours. In the countries of Southeast Asia, the morning and evening maximums for household consumers are approximately the same. The results of the review and the selected primary sources can be useful as input information on the electricity consumption processes for various studies in the electric power industry field.","PeriodicalId":499319,"journal":{"name":"Vestnik MÈI","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202431","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}

{"title":"Verification of the Software and Computing Systems Used for Simulating and Optimizing Energy Complexes Involving Renewable Energy Sources to Achieve Sustainable Energy Sector Development Goals","authors":"Vasiliy Andreev, Mikhail Tyagunov, Razhidin Sheverdiev","doi":"10.24160/1993-6982-2023-4-91-101","DOIUrl":"https://doi.org/10.24160/1993-6982-2023-4-91-101","url":null,"abstract":"The aim of the work is to test and verify the most widely used international and Russian software and computing systems (SCS) by analyzing and comparing real energy complexes to determine the best universal tool for simulating and optimizing hybrid energy complexes (HECs) containing power units on the basis of renewable energy sources (RES) and energy storage systems. The basic principles and technologies for development of HECs with RES are considered, and the main structural components of these complexes and their functions are described. The functional capabilities of Russian and foreign SCSs for simulating HECs with RES have been analyzed, and their main advantages and shortcomings have been studied. The most widely used SCSs are tested and verified by applying them to real energy complexes with different equipment compositions.","PeriodicalId":499319,"journal":{"name":"Vestnik MÈI","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135207260","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}

{"title":"The Kuznetsk Lean Coal Combustion Scheme Optimization Using Straight-Flow Burners and Nozzles with Solid Slag Removal","authors":"Mikhail Fomenko, Vadim Prokhorov, Nadezhda Fomenko","doi":"10.24160/1993-6982-2023-4-72-79","DOIUrl":"https://doi.org/10.24160/1993-6982-2023-4-72-79","url":null,"abstract":"The article presents the results of research and optimization of the furnace volume aerodynamics for furnaces equipped with straight-flow burners with solid slag removal in combusting Kuznetsk lean coal. The research was carried out using the ANSYS Fluent computational fluid dynamics (CFD) system. Recommendations for the development of the solid fuel combustion schemes using straight-flow burners and nozzles are given along with a methodology for conducting research and optimization of the furnace volume aerodynamics. Optimization criteria are formulated, and input data for carrying out the study are selected. A general schematic layout of straight-flow burners and nozzles (in relative dimensions) has been developed. The overall layout is divided into three zones over height with subsequent stage-by-stage optimization of the placement of burners and nozzles in each zone. The optimal number of vertical planes for placing the burners and nozzles has been chosen. The previously developed mathematical model of slag deposition on furnace waterwalls was applied to estimate the waterwall slagging probability. Based on the results from the accomplished optimization of the solid fuel combustion scheme, high performance indicators of the combustion chamber have been obtained.","PeriodicalId":499319,"journal":{"name":"Vestnik MÈI","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202429","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}

{"title":"Identification of the Single-mode Optical Fiber Manufacturer from the Fiber Characteristics","authors":"Dmitriy Tarasov, Mikhail Boev, Dmitriy Pavlov","doi":"10.24160/1993-6982-2023-4-16-27","DOIUrl":"https://doi.org/10.24160/1993-6982-2023-4-16-27","url":null,"abstract":"The aim of the work is to evaluate the possibility of determining the optical fiber category and manufacturer from the fiber characteristics. To this end, the geometric and optical characteristics of 15 samples of single-mode optical fibers of five subcategories produced by eight different manufacturers were measured. The obtained results have demonstrated that the identification of the optical fiber manufacturer should be based on a comprehensive analysis of a number of parameters, rather than based on a single parameter. It is shown that for the above-mentioned identification purposes, the fiber optical characteristics are more suitable than the geometric measurement data and analysis of IR absorption spectra. A method for identifying the fiber manufacturer based on the measured optical and geometric parameters of the fiber is proposed. The method can be used by both telecom operators and optical fiber cable or optical fiber manufacturers in order to determine the manufacturer of the optical fiber used in the final product, e.g., in a fiber optical cable.","PeriodicalId":499319,"journal":{"name":"Vestnik MÈI","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202588","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}

{"title":"Approbation of the WIND TURBINE Software Package","authors":"Galina Deryugina, Evgeniy Ignatiev, Vasiliy Mett","doi":"10.24160/1993-6982-2023-4-80-90","DOIUrl":"https://doi.org/10.24160/1993-6982-2023-4-80-90","url":null,"abstract":"The article addresses the development of the Wind Turbine software package intended for simulating the wind resources at an arbitrarily given point at a given height and calculating the operation mode of a single wind turbine and its energy efficiency indicators. The structure of the developed software package and its individual modules are described along with external and built-in databases used in it, its software implementation, the list of problems to be solved, and the assumptions adopted in the calculations. The functionality of the developed Wind Turbine software package is compared with the capabilities of the basic modules in the most popular WindPRO software package used in international design practice, which has a similar structure and is intended for solving the same problems. To verify the calculations carried out using the developed Wind Turbine software package, a comparative wind energy calculation was carried out using the WindPRO software package for a promising wind farm site located near the Kitovy settlement in the Iturup Island, and for identical wind turbine models. Based on the calculation outcome, a comparative analysis of the results obtained using the two considered software products is carried out. Information on the further planned development of the Wind Turbine software package, on the potential of using it in the educational process, in applied research, and in the design process is given. Additionally, information on the received certificate of state registration of the developed software package is presented.","PeriodicalId":499319,"journal":{"name":"Vestnik MÈI","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135207254","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}

{"title":"Development of a New Approach to Assessing the Technical Condition of Equipment for Expert Systems Development Purposes","authors":"Sergey Mezin, Aleksey Blagochinnov, Shushanik Militonyan, Svetlana Agrinskaya","doi":"10.24160/1993-6982-2023-4-146-154","DOIUrl":"https://doi.org/10.24160/1993-6982-2023-4-146-154","url":null,"abstract":"Within the framework of the development of expert systems, the article describes -- based on an analysis of drawbacks of the existing methods — elaboration of a new approach to identifying the technical condition of main process equipment. The authors are working on the development of a specialized expert system capable of changing its structure and a knowledge base, supplementing it, and solving a number of tasks to identify the technical condition of equipment. The obtaining of new approaches and methods for determining the technical condition index will open the possibility of making more accurate predictions about the current condition of equipment, on taking the equipment out for repair or completely replacing it as a whole or its functional unit. An example of applying the developed methodology for determining the technical condition index is given, and a fragment of the program that automates the preparation of input data for calculations according to the methodology is shown.","PeriodicalId":499319,"journal":{"name":"Vestnik MÈI","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135207259","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}

{"title":"The Architecture of a Distributed System for Data Mining Based on Cases","authors":"Pavel Varshavskii, Sergey Polyakov","doi":"10.24160/1993-6982-2023-4-155-161","DOIUrl":"https://doi.org/10.24160/1993-6982-2023-4-155-161","url":null,"abstract":"The article addresses matters concerned with developing the architecture of a distributed data mining system using case-based reasoning. Currently, due to the development and availability of cloud technologies, one of the most promising areas in the field of artificial intelligence is the development of distributed intelligent systems (DIS). These systems are characterized by a distribution of computing and information resources, which results in more efficient performance of the system due to the possibility to simultaneously process a large amount of data. It is proposed to construct a DIS according to the principle of multi-agent systems (MAS) consisting of autonomous nodes (agents). The article presents the DIS architecture constructed on the basis of intelligent agents and consisting of blocks representing a set of microservices. Matters concerned with software implementation of the case-based block microservices are discussed in detail.","PeriodicalId":499319,"journal":{"name":"Vestnik MÈI","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135207387","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}