{"title":"Optimum Size of Battery-less Energy Sources Autonomous Hybrid Power System for Water Pumping Applications","authors":"Hegazy Rezk, Omer M. Abdalla, M. Tolba, M. Zaky","doi":"10.1109/REEPE49198.2020.9059171","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059171","url":null,"abstract":"The main target of this research is to study the techno-economic performance indicators of a battery-less photovoltaic/ wind turbine generator autonomous hybrid power system (PV/ WTG - AHPS), applied irrigation system to pump underground water. HOMER software package is used in the data analysis. A numerous amount of data samples were thoroughly investigated to choose the best overall configuration, with respect to the least net and flat rate of energy cost. A case study was undertaken on a pilot isolated agricultural project in Alminia city in Egypt. The findings appear to be well substantiated and supportive to the conclusion that the suggested combination of the PV/WTG-AHPS with 27 kW of PV arrays, 10 kW rating of a wind turbine generator, 14 kW sized power converters and 450 m3 storage water tank was found to be the most optimal system configuration for 15 kW peak AC submersible pump with average 110 kWh/day load demand.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116270669","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}
R. Kulikov, A. Chugunov, D. V. Tsaregorodcev, N. Petukhov, A. Malyshev
{"title":"Investigating of the Accuracy of Vehicles Mutual Positioning Using Smartphones","authors":"R. Kulikov, A. Chugunov, D. V. Tsaregorodcev, N. Petukhov, A. Malyshev","doi":"10.1109/REEPE49198.2020.9059247","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059247","url":null,"abstract":"In this paper the analysis of usage raw GNSS observations (pseudoranges, doppler shift) in new generation Android smartphones for mutual vehicles positioning in real conditions is given. Usage of mutual positioning algorithms in this case is justified because measurements errors for two nearby situated objects in real conditions are correlated and can be compensated, which improves accuracy. Experiments with five moving vehicles were held. There were a several kind of maneuvers explored (oncoming traffic, turn, overtaking, etc.). Measurements obtained from smartphone from each vehicle have been stored and transmitted to each other vehicle via internet in real time in purpose to obtain mutual positioning estimations during maneuvering for each one. Time transmitting delay is measured and described in this paper. Comparison in precision in post processing between GNSS receivers measurements and smartphone estimations is given.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114737813","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}
Aleksei Ya. Shakhunyants, A. Samusenko, I. Safronova
{"title":"The Experimental Setup for Researching Interfacial Breakdown","authors":"Aleksei Ya. Shakhunyants, A. Samusenko, I. Safronova","doi":"10.1109/REEPE49198.2020.9059123","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059123","url":null,"abstract":"Interfacial breakdown is a breakdown that occurs between two pressed dielectrics. The work deals with features of creation of experimental setup to research interfacial discharge. The corresponding oscillograms of discharge voltage and discharge current are obtained. They make it possible to determine the presence of a discharge and its duration. The oscillograms of current allow us to determine the type of discharge with current magnitude. Three configurations of setup are observed. The best configuration of setup is proposed.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134485162","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":"Site Generator for Small Open and Private Online Courses","authors":"A. A. Sutchenkov, A. Tikhonov","doi":"10.1109/REEPE49198.2020.9059197","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059197","url":null,"abstract":"The article analyses approach for developing Small Open and Private Online Courses (SOOC and SPOC). The technology and the program for assembling electronic educational resources from heterogeneous fragments, including video clips, images, texts, html, pdf files are considered. The program creates a static site with a navigation structure ready for use in the learning process. You can work with a static site on a personal computer, a tablet or a smartphone. In addition to the static sites generator a server program that provides user and content management is considered. It additionally supports interactive Python applications with the user interface automated generation based on input and output parameters description.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133738782","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":"Determination and Validation of a Mathematical Model of a Target With Variable Trajectory using the Kalman Filter Technique","authors":"Y. Vershinin","doi":"10.1109/REEPE49198.2020.9059173","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059173","url":null,"abstract":"According to the open information in the press media, recent advances in the development and implementation of aircraft and other types of vehicles or objects which can move with a variable trajectory (on a random or pseudo-random trajectory), brought some concern regarding how to track these objects. The classical methods to track the moving objects which are moving on the ballistic trajectory are not applicable in this case. The design and build new types of interceptors can take the considerable resources and time. However, it is well known fact from the history of science and technology that the solution of problems, which seem at the first glance as difficult or impossible to solve, perhaps can be found if one will look on the problem from the different angle. One of the possible solutions for the above task is suggested in this paper.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133007614","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}
A. V. Kochergin, Sergey V. Loktionov, A. N. Sharov, R. Bulatov, Gleb S. Loktionov
{"title":"The Study of Phase Shifting Transformer Control Angle Error Due to the Change of Its Reactance","authors":"A. V. Kochergin, Sergey V. Loktionov, A. N. Sharov, R. Bulatov, Gleb S. Loktionov","doi":"10.1109/REEPE49198.2020.9059217","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059217","url":null,"abstract":"This article describes the necessity of taking into account the changing reactance of a phase shifting transformer (PST), while calculating the control angle for different cases. It discusses various cases, such as forced redistribution of active power flows in electrical networks in order to reduce power losses, or ensuring specified loading of the lines. Constant values of PST reactance are used in studies, but this is not valid for all types of PST's. For some PST's, their reactance varies significantly, especially at large control angles, which may cause an error in calculation of the control angle. This paper investigates this phenomenon.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125867564","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":"Designing a Laboratory Stand for Determining Coatings Emissivity","authors":"M. Purdin, Denis Ksenok","doi":"10.1109/REEPE49198.2020.9059163","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059163","url":null,"abstract":"In this paper, the theory of heat transfer by radiation and the technique for measuring coatings emissivity are reviewed. Two variations on experimental installations while heating the studied surface, with both water and steam, are proposed. An experimental stand was created by heating with hot water at atmospheric pressure. The emissivity of polished oxidized aluminum and candle soot was measured. Measurement results are compared with the results obtained by other authors. Conclusions about the advantages and disadvantages of the created stand were drawn. During the testing measurements, the presence of a characteristic dependence of the emissivity on the radiation angle was confirmed, the maximum of which for aluminum occurring at angles close to 75-85°.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125080380","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}
A. Sangadiev, Andrey Poddubny, David Pozo, A. Gonzalez-Castellanos
{"title":"Quasi-Newton Methods for Power Flow Calculation","authors":"A. Sangadiev, Andrey Poddubny, David Pozo, A. Gonzalez-Castellanos","doi":"10.1109/REEPE49198.2020.9059230","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059230","url":null,"abstract":"In this work, we compared the performance of the ordinary Newton-Raphson method for calculating power flows against three quasi-Newton methods: chord, “good” and “bad” Broyden's methods. First, we illustrated compared the performance of each method on systems of equations of different sizes. Secondly, we compared these methods on power flow calculation for grids of different sizes. We found that an ill-suited initial approximation strongly affects the quasi-Newton methods and makes them slower than the Newton-Raphson one. Finally, in order to fix this issue, we introduced a mixed-method: a few iterations of Newton-Raphson are used to determine a more accurate initial approximation, which can then be used in quasi-Newton methods. Numerical tests showed that this approach outperforms ordinal Newton-Raphson and quasi-Newton methods.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130504018","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":"Linear Antenna Array Circular Bending Effect on the Impedance Matrix and Input Impedances' Unbalance","authors":"B. E. Nazarenko, T. Artemova, A. Gvozdarev","doi":"10.1109/REEPE49198.2020.9059223","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059223","url":null,"abstract":"The effects of circular bending of a linear antenna array profile on the elements of the impedance matrix are studied on the example of 7÷13 element arrays of half-wave dipoles. The relative stability of the impedance matrix elements absolute values is shown in contrast with the instability of their arguments. For the cases of variable possible bending of the antenna array the elements input impedances' magnitudes and phases unbalances are evaluated and analyzed. As the result the necessity of the unbalances compensation schemes constructing is demonstrated. The obtained results can be applied for the compensation schemes' design procedure.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126405518","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":"Energy Saving in Refrigerating Equipment","authors":"Natalia M. Savchenkova, Artem S. Manukov","doi":"10.1109/REEPE49198.2020.9059107","DOIUrl":"https://doi.org/10.1109/REEPE49198.2020.9059107","url":null,"abstract":"The proposed technical solution relates to refrigeration, as well as the field of energy-saving technologies in cold supply systems. The main function of the plate freezer is the quick and deep freezing of food products: seafood, including fish, meat, minced meat in block forms with established linear dimensions. Energy saving in these systems is one of the most important tasks, since this type of equipment is energy intensive and the main costs in the process of equipment operation are associated with a large consumption of electric energy.","PeriodicalId":142369,"journal":{"name":"2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127854856","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}