Pub Date : 2020-09-01DOI: 10.1109/UralCon49858.2020.9216289
T. Kartuzova, Ilya Petryashin, Alexander Petryashin
The article deals with the problem to set the response characteristics of relay protection. The work evaluated the existing methods to solve this problem. A new method to solve this problem is proposed, it being based on consecutive approximation transformations. The peculiarity of the method, in comparison with its analogues, is a more complete use of the information base of the imitation model. The method of setting the response characteristics by this approach is described. Analytical conditions of operation are formulated for the proposed method and an assessment of the possibility of its application in various forms of the resulting characteristic is made. The speed of the proposed method and the traditional one is estimated. The sensitivity of each method is also evaluated. Quantitative and qualitative indicators characterizing each of the methods are presented. In the process of comparison, the optimal method for each of the parameters is identified.
{"title":"Approximation Method to Set Relay Protection Response Characteristics","authors":"T. Kartuzova, Ilya Petryashin, Alexander Petryashin","doi":"10.1109/UralCon49858.2020.9216289","DOIUrl":"https://doi.org/10.1109/UralCon49858.2020.9216289","url":null,"abstract":"The article deals with the problem to set the response characteristics of relay protection. The work evaluated the existing methods to solve this problem. A new method to solve this problem is proposed, it being based on consecutive approximation transformations. The peculiarity of the method, in comparison with its analogues, is a more complete use of the information base of the imitation model. The method of setting the response characteristics by this approach is described. Analytical conditions of operation are formulated for the proposed method and an assessment of the possibility of its application in various forms of the resulting characteristic is made. The speed of the proposed method and the traditional one is estimated. The sensitivity of each method is also evaluated. Quantitative and qualitative indicators characterizing each of the methods are presented. In the process of comparison, the optimal method for each of the parameters is identified.","PeriodicalId":230353,"journal":{"name":"2020 International Ural Conference on Electrical Power Engineering (UralCon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130333175","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 : 2020-09-01DOI: 10.1109/UralCon49858.2020.9216229
Evgeny M. Gordievsky, A. Miroshnichenko, A. Kulganatov
The aim of this work is to develop a simulation model of a wind-solar power station with the display of elements and modes of its operation in the MATLAB software environment. Wind-solar power stations (VSES) are one of the most promising solutions for autonomous power supply of isolated consumers. Such systems can improve the environmental situation, as well as reduce the cost of delivering diesel fuel to remote regions. The structure of the VSES includes wind power and solar power plants, an accumulation, conversion and intelligent control system. As part of the model development work, software was analyzed that allows simulating such power complexes and, due to the high flexibility in the interaction of power supply system components, the MATLAB Simulink software environment was chosen. The article presents models of a wind power plant, a solar power plant, a battery system and a number of control systems. Based on the results of the work, the results of modeling and experiment were obtained and showed high efficiency of the system and sufficient accuracy of the models. The models are scalable and allow simulation of the modes of operation of the AECS.
{"title":"Simulation Model of Solar Power Installation in Matlab Simulink Program","authors":"Evgeny M. Gordievsky, A. Miroshnichenko, A. Kulganatov","doi":"10.1109/UralCon49858.2020.9216229","DOIUrl":"https://doi.org/10.1109/UralCon49858.2020.9216229","url":null,"abstract":"The aim of this work is to develop a simulation model of a wind-solar power station with the display of elements and modes of its operation in the MATLAB software environment. Wind-solar power stations (VSES) are one of the most promising solutions for autonomous power supply of isolated consumers. Such systems can improve the environmental situation, as well as reduce the cost of delivering diesel fuel to remote regions. The structure of the VSES includes wind power and solar power plants, an accumulation, conversion and intelligent control system. As part of the model development work, software was analyzed that allows simulating such power complexes and, due to the high flexibility in the interaction of power supply system components, the MATLAB Simulink software environment was chosen. The article presents models of a wind power plant, a solar power plant, a battery system and a number of control systems. Based on the results of the work, the results of modeling and experiment were obtained and showed high efficiency of the system and sufficient accuracy of the models. The models are scalable and allow simulation of the modes of operation of the AECS.","PeriodicalId":230353,"journal":{"name":"2020 International Ural Conference on Electrical Power Engineering (UralCon)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132089885","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 : 2020-09-01DOI: 10.1109/UralCon49858.2020.9216261
Y. Kashin, A.S. Knyasev, A. Samorodov
The authors have developed a series of axial three-input generator units for hybrid energy systems. These units may convert kinetic wind energy, solar energy, and thermal energy of any heat source into electric power. There are techniques for designing radial electric machines and determining their basic dimensions, but none for axial ones. This analysis allows choosing the basic dimensions of axial generator units designed considering the requirements for their weight-size and energy parameters. The authors have earlier proved that if the electric machines being compared have the same corresponding values of a given set of parameters, it can be argued that they should have the same properties of interest. The authors have called these machines equivalent. Using the regularities established by the authors for transforming the original radial electric machines into equivalent axial ones, dependencies have been found that are optimal under certain conditions: the chosen pole pair number, the pole shape, the electric machine power, the rated rotor shaft speed, etc.
{"title":"Analysis of the Relationship between the Ratio of the Basic Dimensions of the Generator Units and their Design at the Predesign Stage","authors":"Y. Kashin, A.S. Knyasev, A. Samorodov","doi":"10.1109/UralCon49858.2020.9216261","DOIUrl":"https://doi.org/10.1109/UralCon49858.2020.9216261","url":null,"abstract":"The authors have developed a series of axial three-input generator units for hybrid energy systems. These units may convert kinetic wind energy, solar energy, and thermal energy of any heat source into electric power. There are techniques for designing radial electric machines and determining their basic dimensions, but none for axial ones. This analysis allows choosing the basic dimensions of axial generator units designed considering the requirements for their weight-size and energy parameters. The authors have earlier proved that if the electric machines being compared have the same corresponding values of a given set of parameters, it can be argued that they should have the same properties of interest. The authors have called these machines equivalent. Using the regularities established by the authors for transforming the original radial electric machines into equivalent axial ones, dependencies have been found that are optimal under certain conditions: the chosen pole pair number, the pole shape, the electric machine power, the rated rotor shaft speed, etc.","PeriodicalId":230353,"journal":{"name":"2020 International Ural Conference on Electrical Power Engineering (UralCon)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125461763","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 : 2020-09-01DOI: 10.1109/UralCon49858.2020.9216272
V. Kodkin, A. Anikin
The article discusses the features of the rotation mechanism of tower cranes using the KB-408 crane as an example. Often, these mechanisms are equipped with frequency-controlled electric drives with vector control. During the study, it was revealed that with vector control closed by the speed of rotation of the motor shaft, slow compensation of moment disturbances occurs. During physical and mathematical modeling, it was found that low dynamics is determined by the limitation of the magnetic flux of the stator of the electric motor. Even with zero static error, this drawback complicates the work of the tower crane operator. To solve this problem, the use of a scalar control mode is proposed, and to maintain speed, the introduction of dynamic feedback through it is proposed, which will completely eliminate the static error, while maintaining the level of dynamics of the transition process.
{"title":"The Reflection Mode of the Moment Loads by an Asynchronous Electric Drive with Vector Control and the Features of this Mode in the Rotation Drive of the Tower Crane","authors":"V. Kodkin, A. Anikin","doi":"10.1109/UralCon49858.2020.9216272","DOIUrl":"https://doi.org/10.1109/UralCon49858.2020.9216272","url":null,"abstract":"The article discusses the features of the rotation mechanism of tower cranes using the KB-408 crane as an example. Often, these mechanisms are equipped with frequency-controlled electric drives with vector control. During the study, it was revealed that with vector control closed by the speed of rotation of the motor shaft, slow compensation of moment disturbances occurs. During physical and mathematical modeling, it was found that low dynamics is determined by the limitation of the magnetic flux of the stator of the electric motor. Even with zero static error, this drawback complicates the work of the tower crane operator. To solve this problem, the use of a scalar control mode is proposed, and to maintain speed, the introduction of dynamic feedback through it is proposed, which will completely eliminate the static error, while maintaining the level of dynamics of the transition process.","PeriodicalId":230353,"journal":{"name":"2020 International Ural Conference on Electrical Power Engineering (UralCon)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116719290","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 : 2020-09-01DOI: 10.1109/UralCon49858.2020.9216281
S. Makasheva, P. Pinchukov
The power quality problems concern absolutely all spheres of human activity from household to economic and transport. Standardization, monitoring, management and coordination to ensure electromagnetic compatibility in the power supply system is the subject of constant, ongoing research in most countries of the world. In order to attract attention to problems of harmonics current the research focus is made on the harmonic current distortion at city's customers. The consolidation aspects of terminology, management and structure of power quality indicators are analyzed. The current and voltage waveform distortions and related harmonic components are considered in details. The systematization of the power quality indicators structure currently used by various regulations and standards was given as block-diagram. Based on quality indicators measurements taken place on existing urban infrastructure facilities, a comparative analysis with the IEEE 519-2014 standard requirements was made. As a result of field measurements analysis, an unsatisfactory situation in part of harmonic current distortions was revealed, the most probable causes and consequences of poor current quality are described.
{"title":"Power Quality: Harmonic Current Distortion, Standards, Field Testing and Evaluation","authors":"S. Makasheva, P. Pinchukov","doi":"10.1109/UralCon49858.2020.9216281","DOIUrl":"https://doi.org/10.1109/UralCon49858.2020.9216281","url":null,"abstract":"The power quality problems concern absolutely all spheres of human activity from household to economic and transport. Standardization, monitoring, management and coordination to ensure electromagnetic compatibility in the power supply system is the subject of constant, ongoing research in most countries of the world. In order to attract attention to problems of harmonics current the research focus is made on the harmonic current distortion at city's customers. The consolidation aspects of terminology, management and structure of power quality indicators are analyzed. The current and voltage waveform distortions and related harmonic components are considered in details. The systematization of the power quality indicators structure currently used by various regulations and standards was given as block-diagram. Based on quality indicators measurements taken place on existing urban infrastructure facilities, a comparative analysis with the IEEE 519-2014 standard requirements was made. As a result of field measurements analysis, an unsatisfactory situation in part of harmonic current distortions was revealed, the most probable causes and consequences of poor current quality are described.","PeriodicalId":230353,"journal":{"name":"2020 International Ural Conference on Electrical Power Engineering (UralCon)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126285241","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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