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Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki最新文献

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THE DEVELOPMENT OF A TECHNIQUE OF DYNAMIC TESTS OF SUPPORTS 支座动态试验技术的发展
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-24 DOI: 10.30724/1998-9903-2018-20-9-10-129-137
I. Z. Gatiyatov, L. Sabitov, N. Kashapov, I. Gilmanshin, I. Kiymov
{"title":"THE DEVELOPMENT OF A TECHNIQUE OF DYNAMIC TESTS OF SUPPORTS","authors":"I. Z. Gatiyatov, L. Sabitov, N. Kashapov, I. Gilmanshin, I. Kiymov","doi":"10.30724/1998-9903-2018-20-9-10-129-137","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-129-137","url":null,"abstract":"Known methods of testing supports create longitudinal and transverse static load applied to the support. In real conditions the majority of the damage of the supports is connected with the influence on them of dynamic loads, which can exceed the static. The proposed method allows to conduct experimental studies of cascade processes of destruction of anchor site due to a wire breakage, when the potential energy of the tension wires is converted into a dynamic influence on the design of supports.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86018056","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
ECONOMIC CORRECTION OF CURRENT DENSITIES IN THE WIRES OF THE EXISTING OVERHEAD LINES OF 110-220 KV 现有110-220千伏架空线路中电流密度的经济校正
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-24 DOI: 10.30724/1998-9903-2018-20-9-10-25-33
A. A. Gerkusov, E. I. Gabdulvalieva
{"title":"ECONOMIC CORRECTION OF CURRENT DENSITIES IN THE WIRES OF THE EXISTING OVERHEAD LINES OF 110-220 KV","authors":"A. A. Gerkusov, E. I. Gabdulvalieva","doi":"10.30724/1998-9903-2018-20-9-10-25-33","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-25-33","url":null,"abstract":"In this article, we present the methods used to date, the choice of the cross-sections of the wires of overhead transmission lines, taking into account not only the losses from the load currents, but also the corona losses and linear insulation of overhead transmission lines. The method of economic optimization of electrical loads and current density in operating air lines is considered, where the target functions are the specific discounted costs for transmission of 1 kW. h of electric power.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84508655","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: 1
EQUIVALENTS OF THE PASSIVE EIGHT-EARTH POLAR WITH THREE INPUT AND FIVE OUTPUT CONCLUSIONS 等效的被动八极与三个输入和五个输出结论
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-24 DOI: 10.30724/1998-9903-2018-20-9-10-109-119
G. A. Bolshanyn
{"title":"EQUIVALENTS OF THE PASSIVE EIGHT-EARTH POLAR WITH THREE INPUT AND FIVE OUTPUT CONCLUSIONS","authors":"G. A. Bolshanyn","doi":"10.30724/1998-9903-2018-20-9-10-109-119","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-109-119","url":null,"abstract":"Eight-poles of various designs, including an eight-terminal network with three input and five output terminals, are needed to replace some power objects. Especially when only the input and output characteristics of electrical energy are of interest. The paper presents the eightterminal network equations with three input and five output terminals, establishing a connection between these characteristics. Equations of the A-form establish a connection between the input and output voltages and currents; the B-form equations establish a connection between the output and input voltages and currents; G-form equations establish a connection between the input current, output voltages and output voltage, output currents; H-form equations establish the relationship between the input voltage, output currents and output current, output voltages; the Yform equations establish a connection between the input and output currents and the input and output voltages; The Z-form equations establish the relationship between the input and output voltages and the input and output currents. When implementing these equations, attention should be paid to the difference in the directions of the currents in each individual case.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90343322","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
DEVELOPMENT OF THE STRUCTURE OF THE-JET FILM CONTACT DEVICE CONSTRUCTION FOR INTENSIFICATION OF HEAT MASS EXCHANGE 强化热质交换的射流膜接触装置结构的研制
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-24 DOI: 10.30724/1998-9903-2018-20-9-10-146-153
I. Sharipov, L. V. Kruglov, V. Kruglov, O. Dmitrieva
{"title":"DEVELOPMENT OF THE STRUCTURE OF THE-JET FILM CONTACT DEVICE CONSTRUCTION FOR INTENSIFICATION OF HEAT MASS EXCHANGE","authors":"I. Sharipov, L. V. Kruglov, V. Kruglov, O. Dmitrieva","doi":"10.30724/1998-9903-2018-20-9-10-146-153","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-146-153","url":null,"abstract":"In the article the authors presented the construction of a contact device with an artificial unevenness on a vertical partition, which contributes to an increase in the specific contact area of the liquid and gas phases, in order to intensify the heat-storage process in the column apparatus, the experimental setup, the experimental procedure, the results of the experiments and the conclusions on the work. The experiments demonstrated the effect of the geometric parameters of the working section (width of the working area, height of the working area, bending radius of the working section) of the artificial unevenness of the partition of the contact device on the spreading area of the film and on the deviation of the liquid from the axis of the edge of the working section. The most effective ratio of the diameter of the drain of the liquid to the width of the working section is shown and the influence of the height of the working area on the efficiency of the proposed design of a jet-film contact device with an artificial unevenness on a vertical partition.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80952235","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: 1
STUDIES OF POSSIBILITIES OF ENERGY EFFICIENCY OF ASYNCRONOUS MOTORS IMPROVEMENT 提高异步电动机能效的可能性研究
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-24 DOI: 10.30724/1998-9903-2018-20-9-10-92-100
A. F. Burkov, Valery N. Yurin, V. R. Avetisyan
{"title":"STUDIES OF POSSIBILITIES OF ENERGY EFFICIENCY OF ASYNCRONOUS MOTORS IMPROVEMENT","authors":"A. F. Burkov, Valery N. Yurin, V. R. Avetisyan","doi":"10.30724/1998-9903-2018-20-9-10-92-100","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-92-100","url":null,"abstract":"Modern society is inseparably linked with electrical energy utilization in many areas of life and activities. Fleet and its transport infrastructure equipped with an electric equipment of various degree of complexity is not an exception. Currently, hundreds of thousands of commercial, fishing, passenger and other ships are operational and perform their functions. Technical perfection of their production mechanisms and technological processes being implemented are largely determined by the perfection of the actuator and degree of automation. The advantages of electrical energy, creation of advanced enough electromechanical converters and the development of control systems has led to the introduction of automated electric drives, the main part of which are electric motors. The article presents some results of the performed researches on widely used three-phase asynchronous motors, with the aim of improving their energy efficiency.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85795596","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: 3
CHOICE OF SHORT-TERM CONSTANT CONFIGURATION OF THE DISTRIBUTION NETWORK 配电网短期不变配置的选择
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-23 DOI: 10.30724/1998-9903-2018-20-9-10-39-51
I. Golub, O. Voitov, E. Boloev, L. Semenova
{"title":"CHOICE OF SHORT-TERM CONSTANT CONFIGURATION OF THE DISTRIBUTION NETWORK","authors":"I. Golub, O. Voitov, E. Boloev, L. Semenova","doi":"10.30724/1998-9903-2018-20-9-10-39-51","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-39-51","url":null,"abstract":"The work studies a possibility of choice for a given interval of changing the load power and the capacity of renewable generation sources of such a constant configuration of the primary distribution network, at which the energy losses differ minimally from the losses at the optimal hourly reconfiguration The study was carried out using the fast algorithm of the primary distribution network reconfiguration by the losses minimization criterion that was worked out by the authors. The algorithm efficiency is proved by comparing the results obtained on study basis with the results of other methods. After emergency cut-out of the sectionalizing switch the reconfiguration algorithm based on the methods known in the graph theory allow us to determine the line switch required for restoration. For the final choice of such switches feasibility of the post-emergency is tested and the controls are chosen, if the conditions are not met. The work of the proposed methods is demonstrated by the example of the 33 nodal IEEE scheme.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90664748","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: 3
APPLICATION OF BREAKDOWN MECHANICS FOR PREDICTING THE RESOURCE OF AXIAL RADIAL HYDROTURBINS 破裂力学在轴向径向水轮机资源预测中的应用
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-23 DOI: 10.30724/1998-9903-2018-20-9-10-71-78
E. Georgievskaia
{"title":"APPLICATION OF BREAKDOWN MECHANICS FOR PREDICTING THE RESOURCE OF AXIAL RADIAL HYDROTURBINS","authors":"E. Georgievskaia","doi":"10.30724/1998-9903-2018-20-9-10-71-78","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-71-78","url":null,"abstract":"To plan for timely reconstruction, modernization, repairs or replacement of equipment it is important to reliably predict the instant of its transition to the limiting state that determines the lifetime. Currently, there are no regulatory methods for assessing the lifetime of hydraulic turbines at the operation stage. The approach presented in this paper uses the fracture mechanics methods to build a long-term individual forecast of the dangerous development defects in the main elements of hydraulic turbines taking into account design, technological and operational features. The forecast is based on three-dimensional mathematical models that describe the change in the technical condition of the equipment during time under actual operation. The ANSYS software is used for calculations. Models take into account the size and position of detected or possible defects. Crack growth is determined by the combination of low- and high-frequency loads. The critical length of the crack corresponds to the instant of change of the crack development mechanism, when the failure risk increases sharply. Proposed approach can significantly reduce the possibility of unplanned or emergency shutdown of the hydraulic unit due to its destruction during the overhaul period.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88054688","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: 1
COMPARATIVE ANALYSIS OF THE FEATURES OF SPRAYING A HEATED GAS AND SUPERHEATED LIQUID THROUGH CYLINDRICAL CHANNELS WITH SLICES 加热气体与过热液体通过带片圆柱通道喷射特性的对比分析
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-23 DOI: 10.30724/1998-9903-2018-20-9-10-60-70
L. Plotnikov, Y. Brodov, B. Zhilkin, N. S. Kochev
{"title":"COMPARATIVE ANALYSIS OF THE FEATURES OF SPRAYING A HEATED GAS AND SUPERHEATED LIQUID THROUGH CYLINDRICAL CHANNELS WITH SLICES","authors":"L. Plotnikov, Y. Brodov, B. Zhilkin, N. S. Kochev","doi":"10.30724/1998-9903-2018-20-9-10-60-70","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-9-10-60-70","url":null,"abstract":"The article presents the experimental studies results of a superheated liquid and a heated gas spraying through nozzles with cuts in order to determine the influence of the channel configuration on the characteristics of the jets. Experimental setups, experimental methods and instrumentation are described in the article. Photographing and thermal imaging was used to visualize the flow of liquids and gases. It was determined that there is no displacement of the jet axis relatively to the axis of the outlet opening when the heated gas flows through the nozzles with a cut. It is shown that there is a displacement of the axis of the jet relative to the axis of the outlet in the range of 15-18 degrees when the superheated water flows through the nozzles having a cut of the off outlet.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88199101","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 EFFECT OF ELECTROMAGNETIC COUPLING BETWEEN WIRES DOUBLE- CIRCUIT OVERHEAD LINE AND THE GROUND ON TRANSIENTS 导线间电磁耦合、双回架空线与地对暂态的影响
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2019-01-01 DOI: 10.30724/1998-9903-2019-21-1-2-67-76
R. Galeeva, A. V. Nazarov, A. Khasanshin
{"title":"THE EFFECT OF ELECTROMAGNETIC COUPLING BETWEEN WIRES DOUBLE- CIRCUIT OVERHEAD LINE AND THE GROUND ON TRANSIENTS","authors":"R. Galeeva, A. V. Nazarov, A. Khasanshin","doi":"10.30724/1998-9903-2019-21-1-2-67-76","DOIUrl":"https://doi.org/10.30724/1998-9903-2019-21-1-2-67-76","url":null,"abstract":"Abstract. A method is proposed for calculating the initial value of the periodic term of the short- circuit strength of a dual-circuit overhead transmission line using multiphase replacement circuits. The method takes into account the electromagnetic connections between the wires of the dual-circuit overhead line and the ground to transient modes. The calculation model will allow to take into account the influence of the internal properties of the dual-circuit overhead line when calculating the three-phase short-circuit currents at the design stage, which will significantly improve the accuracy of the choice of relay protection settings and line automation. The model was tested in Matlab Simulink.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76924871","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
INVESTIGATION OF THERMOHYDRAULIC AND NEUTRON -PHYSICAL CHARACTERISTICS OF PERSPECTIVE FUEL ASSEMBLY FOR LOW-POWER REACTOR FACILITY 小功率反应堆透视燃料组件热水力和中子物理特性研究
Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki Pub Date : 2018-09-08 DOI: 10.30724/1998-9903-2018-20-7-8-23-34
Y. Smorchkova, E. A. Avdonina, A. Dedov
{"title":"INVESTIGATION OF THERMOHYDRAULIC AND NEUTRON -PHYSICAL CHARACTERISTICS OF PERSPECTIVE FUEL ASSEMBLY FOR LOW-POWER REACTOR FACILITY","authors":"Y. Smorchkova, E. A. Avdonina, A. Dedov","doi":"10.30724/1998-9903-2018-20-7-8-23-34","DOIUrl":"https://doi.org/10.30724/1998-9903-2018-20-7-8-23-34","url":null,"abstract":"The paper presents the results of a numerical study of hydrodynamics and a temperature field in the model of the fuel assembly for the KLT-40S reactor installation in the transition to a fuel consisting of spherical microfuels. The optimal design of a model of a f uel assembly with microfuels for a reactor installation KLT-40S is proposed, from the position of hydrodynamics and heat transfer. The fuel assembly by external dimensions completely corresponds to the traditional assembly with rod fuel elements. The optim al parameters of the perforation of the covers that retain the pebble bed of microfuels are determined. The results of the evaluation of neutron-physical characteristics are presented. The working capacity of the KLT-40S reactor installation is shown when using fuel from microfuel elements.","PeriodicalId":33495,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Problemy energetiki","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89070452","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: 1
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