Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika最新文献

AUTOMATIC DEFECT RECOGNITION FOR ELECTRICAL EQUIPMENT WITH ARTIFICIAL NEURAL NETWORKS 基于人工神经网络的电气设备缺陷自动识别

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230306

A.D. Chernova, A.A. Kosenko

{"title":"AUTOMATIC DEFECT RECOGNITION FOR ELECTRICAL EQUIPMENT WITH ARTIFICIAL NEURAL NETWORKS","authors":"A.D. Chernova, A.A. Kosenko","doi":"10.14529/power230306","DOIUrl":"https://doi.org/10.14529/power230306","url":null,"abstract":"Local heating is a sign of the development of defects in electrical equipment. It is detected by thermal imaging control. The result is thermal images of working electrical equipment – thermograms, which are analyzed using a visual assessment. However, in order to reduce the human factor in processing a large number of thermograms taken from unmanned aerial vehicles, the development of an automated defect recognition system has been proposed. The paper presents the results of recognizing defects in electrical equipment with artificial convolutional neural networks (CNN). It is proposed to use the learning transfer mechanism, the SqueezeNet architecture to classify thermograms into two classes: with a defect and without a defect. To assess the effectiveness of classification, the following metrics are proposed: sensitivity, specificity, balanced accuracy, Matthews correlation coefficient, F-measure. Testing of the trained CNN on a control sample of thermograms not used in training proves the effectiveness of the CNN in the tasks of recognizing defects in electrical equipment. It is promising to continue research on improving the speed and quality of classification of thermograms.","PeriodicalId":56219,"journal":{"name":"Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135008168","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}

引用次数: 0

THE SCALE AND DYNAMICS OF ENERGY ACCIDENTS IN RUSSIA CAUSED BY EXTREME WEATHER EVENTS 俄罗斯由极端天气事件引起的能源事故的规模和动态

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230301

N.V. Gorbacheva, A.Yu. Timofeeva

引用次数: 0

THE STATUS AND PROSPECTS FOR DEVELOPMING PHOTOVOLTAIC POWER STATIONS WITH SUN TRACKING SYSTEMS 太阳能跟踪系统光伏电站的发展现状与展望

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230302

S.V. Mitrofanov, D.K. Baykasenov

{"title":"THE STATUS AND PROSPECTS FOR DEVELOPMING PHOTOVOLTAIC POWER STATIONS WITH SUN TRACKING SYSTEMS","authors":"S.V. Mitrofanov, D.K. Baykasenov","doi":"10.14529/power230302","DOIUrl":"https://doi.org/10.14529/power230302","url":null,"abstract":"The conversion of solar energy into electrical energy is one of the solutions to improve the reliability of power supply to remote consumers. The amount of electricity generated by photovoltaic plants depends on their geographical location, ambient temperature, weather conditions, the material of photovoltaic modules, as well as on the angle of incidence of the solar flux and the orientation of photovoltaic modules. The article discusses ways to improve the reliability of power supply to consumers of photovoltaic power plants, analyzes the existing principles and mechanisms that determine the optimal position of photovoltaic modules. It is proved that the best way to increase the energy efficiency of photovoltaic power plants is the use of automated solar tracking systems. The scientific and technical literature on the design, operation and modeling of tracking systems of photovoltaic plants is analyzed. The existing classifications of solar tracking systems are considered, and a new classification is proposed, which, unlike the existing one, takes into account the design of photovoltaic modules. Based on the results of the analysis of scientific and technical literature, the factors hindering the development of solar tracking systems have been identified. The main directions of improvement and development of tracking systems for photovoltaic plants are proposed, which will allow researchers to solve urgent problems of renewable energy.","PeriodicalId":56219,"journal":{"name":"Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136374651","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}

引用次数: 0

A VOLTAGE STABILIZATION SYSTEM FOR VOLTAGE SUPPLY INSTABILITY AND LOAD CURRENT FLUCTUATIONS 一种电压稳定系统，用于电压供应不稳定和负载电流波动

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230304

B.D. Tabarov, V.A. Solovyеv, A.V. Serikov

{"title":"A VOLTAGE STABILIZATION SYSTEM FOR VOLTAGE SUPPLY INSTABILITY AND LOAD CURRENT FLUCTUATIONS","authors":"B.D. Tabarov, V.A. Solovyеv, A.V. Serikov","doi":"10.14529/power230304","DOIUrl":"https://doi.org/10.14529/power230304","url":null,"abstract":"The article discusses the problems associated with improving the quality of electricity and ensuring the normal operation of industrial power supply systems with instability of the supply voltage and load current fluctuations. To eliminate these problems, a new type of controlled voltage regulator is proposed in the work instead of the well-known mechanical voltage regulators such as RPN and PBV. The results of the study of the quality of electricity and the efficiency of power supply systems in stationary and dynamic processes are presented. Integral characteristics for power supply systems with known and new controlled voltage regulators are given. The study was conducted in the Matlab environment on a model of a workshop transformer of the enterprise with an existing and proposed controlled voltage regulator with a capacity of 1000 kV·A and a voltage of 6 / 0.4 kV. The obtained results of numerical experiments with the instability of the supply voltage and load current fluctuations confirm that the proposed controlled voltage regulator has the ability to maintain a high value of the quality of electricity and the efficiency of power supply systems, as well as to maintain their normal operation and extend the service life of electrical equipment of power supply systems.","PeriodicalId":56219,"journal":{"name":"Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136374656","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}

引用次数: 0

SOLID WASTE AS A FUEL FOR BOILERS OF THERMAL POWER PLANTS 作为火力发电厂锅炉燃料的固体废物

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230308

R.V. Bezuglov, V.V. Papin, N.N. Efimov, E.M. Dyakonov, N.A. Vedmichev, V.R. Filimonov

{"title":"SOLID WASTE AS A FUEL FOR BOILERS OF THERMAL POWER PLANTS","authors":"R.V. Bezuglov, V.V. Papin, N.N. Efimov, E.M. Dyakonov, N.A. Vedmichev, V.R. Filimonov","doi":"10.14529/power230308","DOIUrl":"https://doi.org/10.14529/power230308","url":null,"abstract":"This article investigates the combustion of solid waste in thermal power plants. The article describes the current use of gasification for waste processing and its use in thermal power plants. The review revealed the problem of waste accumulation and the complexity of developing a scheme for its processing. In this regard, the authors propose a technology for recycling waste at thermal power plants with the subsequent production of thermal and electrical energy. For the study, the types of raw materials (waste) were selected in accordance with the Rostov territorial waste management plan, which judges husk and sunflower meal waste to make the greatest energy contribution. The calculation of the thermal and the exergetic balance of the TPP-210A boiler for certain types of waste was also carried out. Graphs were constructed comparing the synthesis gas from the selected waste with natural gas and coal, as well as diagrams of exergy flows for the selected waste, natural gas, and coal. The authors showed that the gasification of solid household and agricultural waste can increase the thermal and exergetic efficiency of the boiler and replace coal and natural gas, reducing the environmental impact. Calculations of the energy and exergetic balances show the efficiency of using solid household and agricultural waste for incineration at thermal power plants, in particular, based on the thermal and exergetic efficiency of the boiler, depending on the fuel used.","PeriodicalId":56219,"journal":{"name":"Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136373116","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}

引用次数: 0

APPLICATION OF DIFFERENTIAL ELECTRIC DRIVE IN THE AUTOMOTIVE INDUSTRY 差动电传动在汽车工业中的应用

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230307

E.V. Belousov, M.A. Grigoriev, N.V. Savosteenko

{"title":"APPLICATION OF DIFFERENTIAL ELECTRIC DRIVE IN THE AUTOMOTIVE INDUSTRY","authors":"E.V. Belousov, M.A. Grigoriev, N.V. Savosteenko","doi":"10.14529/power230307","DOIUrl":"https://doi.org/10.14529/power230307","url":null,"abstract":"Translator The safety of an electric vehicle on the highway can be improved by a high rate of acceleration when driving at high speed before overtaking. It can be reached by implementing an electric drive based on two motors. The article considers the stability of the system with two-channel speed control of autonomous electric vehicles. While one channel is a \"high-torque\" drive, in which the engine is connected through a reducer with a reduction ratio, the second channel is a \"high-speed\" one, in which a similar-sized engine is connected directly. The summation of the power of the two channels is carried out by using a differential gearbox. The article shows the possibility of achieving stable operation by fixing the speed reference on one channel and regulating it on another channel and presents control algorithms. It also determines the optimal values of the gear ratio of the gearbox of the \"high-torque\" channel and the switching ratio (share in the transient process) of the high-torque channel with a minimum of the transition process time. The calculations concern a passenger car and a truck weighing up to 7.5 tons. This solution allows for increasing the dynamics of the car, expanding the range of regulation in terms of speed and torque, and improving the energy efficiency of the electrical installation as a whole. Each of the engines in the proposed scheme most of the time operates in a mode close to the nominal.","PeriodicalId":56219,"journal":{"name":"Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136373406","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}

引用次数: 0

DEVELOPING THE METHOD OF OPTIMAL SETTINGS OF A NONLINEAR IMPEDANCE CONTROLLER OF ARC STEEL MELTING FURNACE 研究了电弧炼钢炉非线性阻抗控制器的优化设置方法

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230305

A.A. Nikolaev, P.G. Tulupov, V.S. Ivekeev, S.S. Ryzhevol

{"title":"DEVELOPING THE METHOD OF OPTIMAL SETTINGS OF A NONLINEAR IMPEDANCE CONTROLLER OF ARC STEEL MELTING FURNACE","authors":"A.A. Nikolaev, P.G. Tulupov, V.S. Ivekeev, S.S. Ryzhevol","doi":"10.14529/power230305","DOIUrl":"https://doi.org/10.14529/power230305","url":null,"abstract":"The paper proposes the methodology for choosing the optimal coefficients of a nonlinear impedance controller as part of the control system for the electric mode of an electric arc furnace (ESF). The focus of the study was an arc steel-smelting furnace of shaft type ShP-125 (85 MVA) with an ARCOS electric mode control system and a nonlinear PI impedance controller. The paper considers in detail the stages of practical application of the proposed methodology. It describes a mathematical model of the ARCOS control system with a non-linear PI impedance controller. The model was used to evaluate the current control system settings and conclude that it needs to be optimized. The developed methodology allowed for determining the new values of the coefficients of the nonlinear PI controller. They ensure the operation of the impedance control loop which is close to the technical optimum. The paper presents the results of applying the improved parameters of the ARCOS control system and the calculation of the technical effect. The scientifically based conclusions prove the effectiveness of the proposed approaches.","PeriodicalId":56219,"journal":{"name":"Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136374674","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}

引用次数: 0

OPTIMIZING THE STRUCTURE AND CIRCUITS OF WIND AND SOLAR POWER PLANTS 优化风能和太阳能发电厂的结构和电路

Vestnik UznoUral''skogo Gosudarstvennogo Universiteta Seria Energetika Pub Date : 2023-01-01 DOI: 10.14529/power230303

O.V. Grigorash, S.V. Oskin, E.A. Denisenko, D.P. Kharchenko

引用次数: 0