{"title":"Field-Weakening Methods for Torque-Flux Direct Field-Oriented Control of Induction Motors","authors":"S. Peresada, Y. Nikonenko, S. Kovbasa","doi":"10.1109/ESS57819.2022.9969273","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969273","url":null,"abstract":"The torque and flux direct field-oriented control systems of induction motors based on the proposed open-loop and closed-loop field-weakening methods are presented. Field-weakening operation regimes are designed to take into account physical limitations of the motor and inverter. The developed solutions guarantee torque-flux reference trajectories tracking in all speed regulation regions of induction electric drive: constant torque, constant power and constant slip frequency. Tracking of torque and rotor flux vector module is ensured by special simultaneous generation of the torque and flux reference functions. The closed-loop method has an additional non-linear feedback channel of inverter voltage module which adjusts the flux reference based on the measured (estimated) stator voltage module in order to maintain it at the maximum level. It is shown by simulations that the closed-loop algorithm with a voltage controller provides more complete utilization of motor power compared to the open-loop method. It increases the dynamic power in the supply voltage limitation conditions. The proposed control systems have the typical structure of the modern vector-controlled induction drives and can be used to improve dynamic properties and efficiency in the field-weakening operation mode.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126297203","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":"Quasi-bilateral method for determining the distance to the ground fault of unilateral power lines","authors":"M. Grebchenko, M. Sopel, Y. Pylypenko, D. Voitov","doi":"10.1109/ESS57819.2022.9969330","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969330","url":null,"abstract":"In this paper the method to determine fault location in case of ground fault at power line with isolated neutral has been proposed. Estimation of fault's distance is carried out based on line's operating mode parameters (namely phase currents and voltages to ground) at the start of the line. Fault's distance calculation is implemented using vectors of line's operating mode parameters from both sides of the line. Verification of the method has been conducted experimentally as well as via math modelling. Method's errors were caused mostly by small currents' value alteration in case of fault, existence of resistance at fault's location and power line's load resistance change. Research about impact on method's accuracy due to distance to the fault as well as resistance value at the fault location has been carried out.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126928002","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}
P. Hovorov, Anastasia Kindinava, V. Hovorov, Omer Abdelrhim
{"title":"Control of Modes of Power Supply and Lighting Systems of Cities Based on the Concept of Smart-Grid","authors":"P. Hovorov, Anastasia Kindinava, V. Hovorov, Omer Abdelrhim","doi":"10.1109/ESS57819.2022.9969269","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969269","url":null,"abstract":"The work is devoted to increasing the efficiency of power supply and lighting systems of cities as a complex biotechnical system. The high level of technical complexity of networks, strong branching, combined with a large number of elements operating in a little predictable mode, make the management of the modes of such networks a rather difficult task, which requires a large amount of information regarding the parameters and modes of electrical networks and their elements, as well as the use of a large number of corrective elements. However, the lack of scientific foundations and automated control of the modes of urban electrical networks as a whole significantly complicates the solution of this problem, and taking into account the characteristics of urban electrical networks, the distribution of parameters in space, and processes in time and the influence of network regimes on the socio-economic conditions of residents, under these conditions, make it almost unsolvable. Considering the above, the authors have developed the scientific foundations for the automated control of modes of urban electrical networks, based on the use of distributed multi-level control systems built according to a hierarchical principle, in combination with the use of corrective multifunctional devices in load nodes, built on the basis of phase-switching systems. Their use in combination with the use of the Smart-Grid concept opens up the possibility of automatically changing the module, phase shift and harmonic composition of voltages and currents in load nodes, ensuring the optimal functioning of urban electrical networks as a whole, by reducing voltage and power losses in networks.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126493698","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":"Improved Power Transformer Condition Assessment under Uncertainty using Fuzzy Logic","authors":"E. I. Bardyk, N. Bolotnyi","doi":"10.1109/ESS57819.2022.9969327","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969327","url":null,"abstract":"There is a problem of transition to equipment maintenance according to its technical condition. Solving this problem should contributed to more efficient management of power companies resources and increase their competitiveness. This paper proposes an approach to quantitative assessment of technical condition for power transformer using an integrated technical deterioration index. The proposed approach is based on fuzzy logic and fuzzy set theory. This allows you to formalize expert assessments of defect development in power transformer. The formalization of technical condition evaluation for power transformer in knowledge base form is implemented in expert system prototype. The integrated technical deterioration index of power transformer was determined based on test results of technical condition parameters for functional units of power transformer using expert judgments. The considered approach to uncertainty formalization about technical condition of power transformer allows constructing the deterministic scheme of decision-making on further service strategy. The procedures of ranking, out of service of specific objects are implemented based on objective criteria in this service strategy of power transformer.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133479041","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":"Forecastirig the state of water resources to balance loads and increase the stability of the energy sector","authors":"I. Kameneva, E. Dzhyhun","doi":"10.1109/ESS57819.2022.9969322","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969322","url":null,"abstract":"Based on the analysis of world experience, the leading role of water resources for balancing the process of electricity production and consumption in the unified energy system of Ukraine is determined, which is especially relevant against the background of the growth of production volumes and unregulated use of wind and solar energy. Modern directions of forecasting the state of water resources are analyzed, among which methods of mathematical modeling of hydrological systems, models of seasonal fluctuations and probabilistic forecasting methods based on statistical data are highlighted. Separate forecasting results are presented, which reflect the main trends regarding climate changes in the world and in Ukraine, which have a decisive impact on the state of water resources.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129194642","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}
N. Filimonenko, Kostiantyn Filimonenko, Hryhoriy Melkonov
{"title":"Peculiarities of the Reconstruction of the Relay Protection of a Transformer Substation","authors":"N. Filimonenko, Kostiantyn Filimonenko, Hryhoriy Melkonov","doi":"10.1109/ESS57819.2022.9969294","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969294","url":null,"abstract":"The paper presents the results of the analysis for the implementation of the transition of the existing 6 kV Substation to voltage class 35 kV with reconfiguration and automation of electrical equipment of the substation - this is a necessary and priority step to improve the efficiency of electrical networks. When considering in detail all the advantages of the presented terminals the most acceptable is the Sepam (Schneider Electric) type relay protection. To achieve safe and reliable operation of the power supply system, the substation must be equipped with microprocessor relay protection devices. In addition to the necessary functioning of the terminals can be equipped with interface parts of the lower stage, which are needed when building an automated design (configuration) of power facilities. The aim of the paper is to study the possibility and implementation of equipping microprocessor-based relay protection of the substation to ensure the normal safe and reliable operation of the substation power supply system. Switch to relay protection and electrical automation device on microprocessor-based element base.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121252926","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":"Simulation Model for Assessing the Feasibility of Using the Energy Storage System for Regulation of Modes of Electric Networks","authors":"Y. Parus, I. Blinov, D. Olefir","doi":"10.1109/ESS57819.2022.9969247","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969247","url":null,"abstract":"The principles of building and the general structure of the unified model for estimation of economic effect from providing by the energy storage systems of services for regulation of modes of electric networks are provided. The target functions for searching the optimal solution to the problem set are provided. The mathematical apparatus for calculating the main components of the target function is presented. Recommendations on the formalization of the problem statement in the calculation model are provided.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115675939","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}
V. Khilov, Natalija Glukhova, Ludmila Pesotskaya, Sergii Fedorov
{"title":"Using Fuzzy Control Principles to Improve the Electromagnetic Compatibility of Electrical Supply and Electromechanical Systems","authors":"V. Khilov, Natalija Glukhova, Ludmila Pesotskaya, Sergii Fedorov","doi":"10.1109/ESS57819.2022.9969257","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969257","url":null,"abstract":"The features of an electromagnetic energy conversion by an electromechanical drive in a two-mass system with elastic connections are researched. The frequency characteristics of energy transfer additional links, due to the elastic properties of the mechanic transmission, are studied. Control algorithms that suppress oscillations of electromagnetic energy in the power supply system are found. The ideas of neuro-fuzzy control to suppress interharmonics of electromagnetic energy have been used.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124577514","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}
Valeriya Kopyakova, K. Niemchenko, Tetyana Vikhtynska
{"title":"Using of search methods for effective three-phase feeder load balancing","authors":"Valeriya Kopyakova, K. Niemchenko, Tetyana Vikhtynska","doi":"10.1109/ESS57819.2022.9969293","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969293","url":null,"abstract":"We present an effective method for optimizing the connections of a given number of consumers with given temporary power consumption to a three-phase power supply circuit to establish a balanced electricity consumption. As the result the task of symmetrization the load by phases of the distribution network of the electric power system is solved.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124900283","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 aspects of thin round elastic plates' stability loss","authors":"Oleksandr Vatrenko, M. Iakymchuk","doi":"10.1109/ESS57819.2022.9969239","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969239","url":null,"abstract":"In technical systems that operate in the presence of vacuum, often necessary is to control the vacuum depth. Vacuum monitoring sensors are used for this purpose. Modern sensors are quite complex and expensive electrical devices. In some cases when the object operated under vacuum is partially or completely made of plates and shells, these components energy capacity can be used for vacuum control without engaging the special sensors. In particular, such control systems are used in packaging with vacuum cans. Studies have shown that membranes stamped on the body of an object function due to the transformation energy that occurs therein as a result stability loss from pressure drop. This energy depends on the membrane thickness. As the membrane thickness decreases, the transformation energy increases, and the stability loss pressure decreases.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124934197","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}