Pub Date : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655756
B. Sharifov, R. Yunusov, K. Gulyamov, S. Dovudov, M. Safaraliev, A. Ghulomzoda
Currently the market of three-phase standalone voltage inverters and frequency converters, which are to be used in alternating current drive and power supply, develops together with systems of control and voltage support. In connection with this, research and development of three phase stand-alone voltage inverters, that are used in control of alternating current systems, is relevant to a great degree. One of the main stages of developing the stand-alone voltage inverter is designing the control system. Any kind of control of the power converter ultimately comes down to controlling the open state time of power transistor in relation to period of its work. This method of control is referred to as the pulse width modulation. In this study the method of vector-based pulse width modulation is considered for the case of the frequency converters control system. The core of the vector pulse width modulation is about refusing from the simultaneous turning on/off all the switches during the switching period (if pulse width modulation is sine-based) in favor to switching between several pre-selected conditions of the inverter, each of which is corresponding to some spatial position of the vector. The analysis of the frequency converters operation, based on the vector pulse width modulation, is considered. The regularities describing electromagnetic transients in the frequency converters are discovered. The mathematical and computer models of the frequency converters based on the vector pulse width modulation are developed.
{"title":"The Mathematical Model of Pulse Width Modulation Frequency Converter","authors":"B. Sharifov, R. Yunusov, K. Gulyamov, S. Dovudov, M. Safaraliev, A. Ghulomzoda","doi":"10.1109/USSEC53120.2021.9655756","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655756","url":null,"abstract":"Currently the market of three-phase standalone voltage inverters and frequency converters, which are to be used in alternating current drive and power supply, develops together with systems of control and voltage support. In connection with this, research and development of three phase stand-alone voltage inverters, that are used in control of alternating current systems, is relevant to a great degree. One of the main stages of developing the stand-alone voltage inverter is designing the control system. Any kind of control of the power converter ultimately comes down to controlling the open state time of power transistor in relation to period of its work. This method of control is referred to as the pulse width modulation. In this study the method of vector-based pulse width modulation is considered for the case of the frequency converters control system. The core of the vector pulse width modulation is about refusing from the simultaneous turning on/off all the switches during the switching period (if pulse width modulation is sine-based) in favor to switching between several pre-selected conditions of the inverter, each of which is corresponding to some spatial position of the vector. The analysis of the frequency converters operation, based on the vector pulse width modulation, is considered. The regularities describing electromagnetic transients in the frequency converters are discovered. The mathematical and computer models of the frequency converters based on the vector pulse width modulation are developed.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125020907","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655729
A. Egorov, O. Pichugova
The research is carried out with the aim of collecting and systematizing data from open sources on the functioning of the country's power system using the example of the Lithuanian power system. The results will be further used to create accurate power system maps, electrical diagrams, models for calculating steady-state conditions and other feasibility studies. The basis of data for research is data from the Lithuanian electricity transmission system operator, the European network of Transmission System Operators, Yandex Maps satellite images, Google Maps, Google Earth and Satellites. pro, the Scopus, Web of Science, as well as other open sources. Based on the data from the listed sources, a list of power plants and substations of the Lithuanian power system operating at voltage classes of 110 kV and above, their geo-position coordinates, number and indicators of technological functioning have been determined. The power and electricity balances of the Lithuanian power system have been determined. A list of power plants, substations and power transmission lines of the Lithuanian power system has been compiled, their coordinates and basic parameters have been determined for the subsequent drawing up of a schematic map, an electrical diagram and the creation of a calculation model for the steady-state regimes and other calculations.
开展这项研究的目的是以立陶宛电力系统为例，从公开来源收集有关该国电力系统运行的数据并使之系统化。研究结果将进一步用于创建准确的电力系统地图、电气图、计算稳态条件的模型和其他可行性研究。研究数据的基础是立陶宛输电系统运营商、欧洲输电系统运营商网络、Yandex地图卫星图像、谷歌地图、谷歌地球和卫星的数据。pro, Scopus, Web of Science，以及其他开放资源。根据所列资料来源的数据，确定了立陶宛电力系统以110千伏及以上电压等级运行的发电厂和变电站的清单，以及它们的地理位置坐标、数目和技术功能指标。立陶宛电力系统的功率和电力平衡已经确定。已经编制了立陶宛电力系统的发电厂、变电站和输电线路的清单，确定了它们的坐标和基本参数，以便随后绘制示意图、电气图和建立稳态制度和其他计算的计算模型。
{"title":"The Energy Companies Reports Study for the Formation of Maps and Power and Energy Balances on the Example of Lithuanian Power System","authors":"A. Egorov, O. Pichugova","doi":"10.1109/USSEC53120.2021.9655729","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655729","url":null,"abstract":"The research is carried out with the aim of collecting and systematizing data from open sources on the functioning of the country's power system using the example of the Lithuanian power system. The results will be further used to create accurate power system maps, electrical diagrams, models for calculating steady-state conditions and other feasibility studies. The basis of data for research is data from the Lithuanian electricity transmission system operator, the European network of Transmission System Operators, Yandex Maps satellite images, Google Maps, Google Earth and Satellites. pro, the Scopus, Web of Science, as well as other open sources. Based on the data from the listed sources, a list of power plants and substations of the Lithuanian power system operating at voltage classes of 110 kV and above, their geo-position coordinates, number and indicators of technological functioning have been determined. The power and electricity balances of the Lithuanian power system have been determined. A list of power plants, substations and power transmission lines of the Lithuanian power system has been compiled, their coordinates and basic parameters have been determined for the subsequent drawing up of a schematic map, an electrical diagram and the creation of a calculation model for the steady-state regimes and other calculations.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114160579","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655747
A. Balabin, D. Klavsuts, I. Klavsuts, Alexander B. Klavsuts
The paper gives an analysis of a theoretically well-grounded and practically introduced method, aimed at the achievement of optimal modes of transition and consumption of electric power, determined, in particular, by inter-state standards for the electric energy quality. The authors present the foundations of the increase in quality and economic efficiency of electric power on the basis of the use of an innovative patented method and device of Demand Side Management - the normalizer of AC voltage. Economic calculations show that this innovation is profitable not only in industry, but also in multi-storied residential buildings. The total economic effect of the system application of innovative technology in electric power systems of the world, in systems of smart grids, smart cities, smart houses by reducing electricity consumption and improving its quality can reach more than 50% savings of financial and other resources associated with the production, transmission and consumption of electrical energy, as well as all of the associated environmental and social effects.
{"title":"Management of Electrical Energy Consumption in Urban Residential Buildings","authors":"A. Balabin, D. Klavsuts, I. Klavsuts, Alexander B. Klavsuts","doi":"10.1109/USSEC53120.2021.9655747","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655747","url":null,"abstract":"The paper gives an analysis of a theoretically well-grounded and practically introduced method, aimed at the achievement of optimal modes of transition and consumption of electric power, determined, in particular, by inter-state standards for the electric energy quality. The authors present the foundations of the increase in quality and economic efficiency of electric power on the basis of the use of an innovative patented method and device of Demand Side Management - the normalizer of AC voltage. Economic calculations show that this innovation is profitable not only in industry, but also in multi-storied residential buildings. The total economic effect of the system application of innovative technology in electric power systems of the world, in systems of smart grids, smart cities, smart houses by reducing electricity consumption and improving its quality can reach more than 50% savings of financial and other resources associated with the production, transmission and consumption of electrical energy, as well as all of the associated environmental and social effects.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"69 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114018311","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655758
S. Eroshenko, A. Bramm, E. Zinovieva, Olga S. Vozisova
This paper discusses the main types of risks associated with electric power companies in the context of their interaction within the market relations. The second chapter provides a classification of companies' technological risks based on the probability of their formation and the degree of their consequences. The third chapter describes the main stages of the utilities” life cycle. The fourth chapter describes the basic methods for analyzing and assessing various types of risks for utilities. In the fifth chapter, the authors present a comprehensive analysis and risks assessment of a grid company based on expert assessments and SWOT and STEP analysis. One of the largest grid companies in the Russian Federation was selected as an object for analysis. As a result of the risk analysis of the grid company, the most appropriate approaches to assessing the company's risks for each stage of its life cycle have been identified. The authors also proposed approaches to building a risk management system for electric power companies, based on the results of the grid company's analysis and risk assessment.
{"title":"Power Industry Risk Assessment: Current Practices","authors":"S. Eroshenko, A. Bramm, E. Zinovieva, Olga S. Vozisova","doi":"10.1109/USSEC53120.2021.9655758","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655758","url":null,"abstract":"This paper discusses the main types of risks associated with electric power companies in the context of their interaction within the market relations. The second chapter provides a classification of companies' technological risks based on the probability of their formation and the degree of their consequences. The third chapter describes the main stages of the utilities” life cycle. The fourth chapter describes the basic methods for analyzing and assessing various types of risks for utilities. In the fifth chapter, the authors present a comprehensive analysis and risks assessment of a grid company based on expert assessments and SWOT and STEP analysis. One of the largest grid companies in the Russian Federation was selected as an object for analysis. As a result of the risk analysis of the grid company, the most appropriate approaches to assessing the company's risks for each stage of its life cycle have been identified. The authors also proposed approaches to building a risk management system for electric power companies, based on the results of the grid company's analysis and risk assessment.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133638336","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655760
A. Egorov, O. Pichugova
The Georgian power system is unique in terms of the composition of hydroelectric power plants generating equipment, as well as in terms of power and electricity balances. In general, Georgian power system is small, but more than 75% of all electricity in Georgia is generated by hydroelectric power plants. Another feature of the power system of Georgia and its hydroelectric power plants is the fact that power plants operate in the special conditions of the Caucasus mountain at an altitude of 2500–3000 meters above sea level, which is of particular scientific interest. The study of the composition of the generating equipment of Georgian power plants and their install capacity technological indicators allows to study the unique experience and features of their technological functioning of hydraulic units in mountainous terrain. Based on the open data of the system operator of Georgia - Georgian State Electrosystem, the Association of European network of transmission system operators, data from the Ministry of Energy of Georgia and other sources, a list of power plants of the Georgian power system that provide power at voltage class 110 kV and above was compiled. On the basis of official Georgian State Electrosystem company reports, hydroelectric power plants of the power system, as well as power and electricity balances, have been studied.
{"title":"The Georgian Power System Hydro Power Plants Install Capacity Review","authors":"A. Egorov, O. Pichugova","doi":"10.1109/USSEC53120.2021.9655760","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655760","url":null,"abstract":"The Georgian power system is unique in terms of the composition of hydroelectric power plants generating equipment, as well as in terms of power and electricity balances. In general, Georgian power system is small, but more than 75% of all electricity in Georgia is generated by hydroelectric power plants. Another feature of the power system of Georgia and its hydroelectric power plants is the fact that power plants operate in the special conditions of the Caucasus mountain at an altitude of 2500–3000 meters above sea level, which is of particular scientific interest. The study of the composition of the generating equipment of Georgian power plants and their install capacity technological indicators allows to study the unique experience and features of their technological functioning of hydraulic units in mountainous terrain. Based on the open data of the system operator of Georgia - Georgian State Electrosystem, the Association of European network of transmission system operators, data from the Ministry of Energy of Georgia and other sources, a list of power plants of the Georgian power system that provide power at voltage class 110 kV and above was compiled. On the basis of official Georgian State Electrosystem company reports, hydroelectric power plants of the power system, as well as power and electricity balances, have been studied.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134638229","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655730
Ilya E. Kazhekin, M. Kharitonov, Evgeni Filipov, Darya Kugucheva
The paper considers the influence of transient processes on the safety of single-phase faults in low-voltage electric networks with insulated neutral, taking into account the resistance at the point of phase-to-ground fault. Practically a significant part of the short circuits has a nature of an unstable contact between the phase and the grounded housing, therefore, it is necessary to take into account the effect of transient processes on the indicators characterizing the hazard of an electrical installation. Experimental studies carried out on the physical model of a low-voltage electric network have shown that the surge fault current can be several times higher than the amplitude of the steady-state fault current. In addition, surge currents lead to an increase in the energy released at the damage point. In this case, the magnitude of the surge current and the released energy increase with a decrease in the short circuit resistance. During the studies more than a twofold increase in the released energy was recorded when the nature of the circuit changed from stable to unstable. A similar trend was recorded for the surge fault current. Calculation of the correlation coefficient between these values showed their close relationship, which may indicate the same factors that form these processes. Accordingly, the means aimed at reducing the short-term surge currents in the transient process can be considered as a way to improve the safety of the electrical installation.
{"title":"Hazard Assessment of Low-voltage Insulated Neutral Networks with Unstable Single-phase Fault","authors":"Ilya E. Kazhekin, M. Kharitonov, Evgeni Filipov, Darya Kugucheva","doi":"10.1109/USSEC53120.2021.9655730","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655730","url":null,"abstract":"The paper considers the influence of transient processes on the safety of single-phase faults in low-voltage electric networks with insulated neutral, taking into account the resistance at the point of phase-to-ground fault. Practically a significant part of the short circuits has a nature of an unstable contact between the phase and the grounded housing, therefore, it is necessary to take into account the effect of transient processes on the indicators characterizing the hazard of an electrical installation. Experimental studies carried out on the physical model of a low-voltage electric network have shown that the surge fault current can be several times higher than the amplitude of the steady-state fault current. In addition, surge currents lead to an increase in the energy released at the damage point. In this case, the magnitude of the surge current and the released energy increase with a decrease in the short circuit resistance. During the studies more than a twofold increase in the released energy was recorded when the nature of the circuit changed from stable to unstable. A similar trend was recorded for the surge fault current. Calculation of the correlation coefficient between these values showed their close relationship, which may indicate the same factors that form these processes. Accordingly, the means aimed at reducing the short-term surge currents in the transient process can be considered as a way to improve the safety of the electrical installation.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129075663","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655750
M. Legan, A. Gobysh, O. Afanaseva
Digitalization and continuing education are the top priority of education modernization in the Russian Federation. At present, in the conditions of increased virus threats digital educational ecosystems with online courses, the educational and methodical digital technologies are becoming particularly relevant for the educational process in the field of human security of power engineering. The article is devoted to the formation of a digital educational ecosystem in the field of human security in the technosphere. The ecosystem based on the Dispace 2.0 software platform and used for continuous training in the safety of the technosphere. Empirical and theoretical methods and an expert assessment involving the Thomas L. Saaty hierarchy analysis are used. The formation of a pedagogically useful emergent digital ecosystem is the current solution to the problem of staff training for providing human safety in the energetics, corresponding to the threats of the present-day realities. This, however, needs a radical rethinking of purposes, content, technologies, and the methods of staff training. The article shows that the formed digital educational ecosystem is the best and meets the stated criteria and needs of the educational process in the field of human safety in technosphere at the Novosibirsk State Technical University (Faculty of Power Engineering). The analytical hierarchy method can be effectively used by managers and teaching staff of educational organizations for expert assessment and selection of learning management systems and other options.
数字化和继续教育是俄罗斯联邦教育现代化的重中之重。目前，在病毒威胁增加的情况下，在线课程的数字教育生态系统，教育和系统的数字技术在电力工程人类安全领域的教育过程中变得尤为重要。本文致力于技术领域人类安全领域的数字教育生态系统的形成。该生态系统基于Dispace 2.0软件平台，用于技术圈安全方面的持续培训。本文采用了实证和理论方法以及专家评估方法，其中包括Thomas L. Saaty层次分析法。形成一个在教学上有用的新兴数字生态系统是目前解决员工培训问题的解决方案，以提供能量学中的人类安全，与当今现实的威胁相对应。然而，这需要对员工培训的目的、内容、技术和方法进行彻底的重新思考。文章表明，形成的数字教育生态系统是最好的，符合新西伯利亚国立技术大学(动力工程学院)技术领域人类安全教育过程的规定标准和需求。层次分析法可以被教育机构的管理者和教学人员有效地用于学习管理系统和其他方案的专家评估和选择。
{"title":"Formation of a Digital Educational Ecosystem For Lifelong Learning in the Field of Technosphere Safety","authors":"M. Legan, A. Gobysh, O. Afanaseva","doi":"10.1109/USSEC53120.2021.9655750","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655750","url":null,"abstract":"Digitalization and continuing education are the top priority of education modernization in the Russian Federation. At present, in the conditions of increased virus threats digital educational ecosystems with online courses, the educational and methodical digital technologies are becoming particularly relevant for the educational process in the field of human security of power engineering. The article is devoted to the formation of a digital educational ecosystem in the field of human security in the technosphere. The ecosystem based on the Dispace 2.0 software platform and used for continuous training in the safety of the technosphere. Empirical and theoretical methods and an expert assessment involving the Thomas L. Saaty hierarchy analysis are used. The formation of a pedagogically useful emergent digital ecosystem is the current solution to the problem of staff training for providing human safety in the energetics, corresponding to the threats of the present-day realities. This, however, needs a radical rethinking of purposes, content, technologies, and the methods of staff training. The article shows that the formed digital educational ecosystem is the best and meets the stated criteria and needs of the educational process in the field of human safety in technosphere at the Novosibirsk State Technical University (Faculty of Power Engineering). The analytical hierarchy method can be effectively used by managers and teaching staff of educational organizations for expert assessment and selection of learning management systems and other options.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129000820","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655727
D. Stepanova, V. Antonov, V. Naumov, A. Soldatov
The Smart Protection Devices are intelligent relay protection devices based on machine learning methods. They can delimit complex unconnected parameters areas of various electrical system modes in a multidimensional space. Despite the complexity of the functional load, their implementation does not require an avant-garde computing environment, since all the laborious work on the development of the cognitive abilities of the device's intelligence is carried out even at the development stage. The report notes the importance of thoughtful localization of machine learning methods in relay protection algorithms. It is noted that the solution of the well-known problem of intersection of areas of controlled parameters of various modes of the electrical network is possible if the dimension of the precedent space and the power of the training dataset is sufficient. The success of the Smart Protection Device training largely depends on the appropriate feature engineering, the provision of the necessary capacity and power of the training dataset, and the formation of a compressed training dataset while preserving its information basis. The paper formulates the listed tasks and presents the ways to solve them on the example of the development of the Intelligent Mode Discriminator.
{"title":"The Basic Tasks in the Development of the Smart Protection Device","authors":"D. Stepanova, V. Antonov, V. Naumov, A. Soldatov","doi":"10.1109/USSEC53120.2021.9655727","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655727","url":null,"abstract":"The Smart Protection Devices are intelligent relay protection devices based on machine learning methods. They can delimit complex unconnected parameters areas of various electrical system modes in a multidimensional space. Despite the complexity of the functional load, their implementation does not require an avant-garde computing environment, since all the laborious work on the development of the cognitive abilities of the device's intelligence is carried out even at the development stage. The report notes the importance of thoughtful localization of machine learning methods in relay protection algorithms. It is noted that the solution of the well-known problem of intersection of areas of controlled parameters of various modes of the electrical network is possible if the dimension of the precedent space and the power of the training dataset is sufficient. The success of the Smart Protection Device training largely depends on the appropriate feature engineering, the provision of the necessary capacity and power of the training dataset, and the formation of a compressed training dataset while preserving its information basis. The paper formulates the listed tasks and presents the ways to solve them on the example of the development of the Intelligent Mode Discriminator.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126630892","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 : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655753
Maksim Elaev, G. Glazyrin
The transients in the electric power system in the event of a sudden imbalance in active power are considered. This fact makes it possible to calculate the process of changing the frequency taking to account the dynamic properties of hydroelectric and thermal power plants units. Mathematical model of the power system which can calculate the process of changing frequency and take dynamical properties of hydro-and turbo-generators is considered. The model of power station with an equivalent generator and simplified thermal generating unit is also presented. Verification of the model conducted by calculating to experimental comparison of frequency in the energy system and active power of energy units with experimental check-up is completed successfully. The isolated power system of the Taimyr Peninsula, which contains two hydroelectric power plants and three thermal power plants, was taken as the basis for verifying the model. The stations are located relatively close to each other (maximum distance of about 300 km), and are connected by 220 kV lines. The use of the proposed control method in power systems with weak links has not been studied. In this paper shown that the use of simplified dynamic characteristics model has not been lead to solve the significant deficiency innaccuracy while solving this issue. In the first moment after active power imbalance a calculation made of transient phenomena and taken into account acceleration exposure of regulation systems of hydro and turbogenerators is presented. The frequency deviations can be decreased till 8 % by a system development of hydrogenerators. The combined control of hydro and turbogenerators is necessary for effective limiting frequency deviation of turbo- and hydro- generators is necessary for effective limiting frequency deviation. In this case the frequency deviations can be decreased to approximately 2 times.
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Pub Date : 2021-11-13DOI: 10.1109/USSEC53120.2021.9655752
A. Achitaev, N. S. Naumkin, A. V. Shirokov, A. Arestova, A. Rusina
The paper deals with the problem of using renewable energy sources as part of micro-hydro power plant auxiliaries. Mathematical models are presented that describe the connection of a wind turbine with a frequency converter for joint operation with auxiliary consumers, for which it is intended to perform the voltage regulation in the network. The mathematical model is performed in the MATLAB Simulink software package. A law was formulated, and an algorithm was developed for the operation of the wind turbine with a load as part of the power plant auxiliaries. This algorithm assumes the continuous wind turbine operation without disconnection and automatic transfer switching that result in an increase of the capacity factor. Short circuit conditions at the load side and the influence of the wind turbine on the magnitude of the short circuit current contribution are considered. The influence of the wind turbine on voltage regulation is presented on the voltage oscillograms in normal conditions and during a short circuit.
{"title":"Renewable Energy Sources as Part of the Auxiliary Network of Small and Micro Hydropower Plants","authors":"A. Achitaev, N. S. Naumkin, A. V. Shirokov, A. Arestova, A. Rusina","doi":"10.1109/USSEC53120.2021.9655752","DOIUrl":"https://doi.org/10.1109/USSEC53120.2021.9655752","url":null,"abstract":"The paper deals with the problem of using renewable energy sources as part of micro-hydro power plant auxiliaries. Mathematical models are presented that describe the connection of a wind turbine with a frequency converter for joint operation with auxiliary consumers, for which it is intended to perform the voltage regulation in the network. The mathematical model is performed in the MATLAB Simulink software package. A law was formulated, and an algorithm was developed for the operation of the wind turbine with a load as part of the power plant auxiliaries. This algorithm assumes the continuous wind turbine operation without disconnection and automatic transfer switching that result in an increase of the capacity factor. Short circuit conditions at the load side and the influence of the wind turbine on the magnitude of the short circuit current contribution are considered. The influence of the wind turbine on voltage regulation is presented on the voltage oscillograms in normal conditions and during a short circuit.","PeriodicalId":260032,"journal":{"name":"2021 Ural-Siberian Smart Energy Conference (USSEC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114176482","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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