Pub Date : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982333
O. Tetervenoks, A. Avotiņš, Nadežda Fedorjana, Artūrs Klūga, Valters Krasts
This paper is an attempt of authors to consider most likely scenario of the further development of street lighting systems, based on current trends in sensors, telecommunication technology and auto industry. Street lighting system previously already was considered as the element of the Smart City by researchers, however, the precise functionality, role and the importance of such a system was considered rather mediocre (ordinary). This article is a holistic view of the Smart Street management system with the street lighting system, which plays great importance of whole transportation and mobility infrastructure functionality and safety enhancement.
{"title":"Potential Role of Street Lighting System for Safety Enhancement on the Roads in Future","authors":"O. Tetervenoks, A. Avotiņš, Nadežda Fedorjana, Artūrs Klūga, Valters Krasts","doi":"10.1109/RTUCON48111.2019.8982333","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982333","url":null,"abstract":"This paper is an attempt of authors to consider most likely scenario of the further development of street lighting systems, based on current trends in sensors, telecommunication technology and auto industry. Street lighting system previously already was considered as the element of the Smart City by researchers, however, the precise functionality, role and the importance of such a system was considered rather mediocre (ordinary). This article is a holistic view of the Smart Street management system with the street lighting system, which plays great importance of whole transportation and mobility infrastructure functionality and safety enhancement.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132398419","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982331
Donato Repole, L. Adrian
Moving from a study case based on innovative Cloud Based Multi-agent System (CMAS) framework for Smart LED Street Lighting control, this paper investigates the theory at the base for a low cost controller with parallel computational capability. The work centers upon previous developments by the authors in the production and design of Long Range Hybrid Pyroelectric Infrared (PIR) control sensors and Cloud Based Multi-Agent System (CMAS).
{"title":"Introduction to Parallel MAS Control for MAS - Smart Sensor Networks","authors":"Donato Repole, L. Adrian","doi":"10.1109/RTUCON48111.2019.8982331","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982331","url":null,"abstract":"Moving from a study case based on innovative Cloud Based Multi-agent System (CMAS) framework for Smart LED Street Lighting control, this paper investigates the theory at the base for a low cost controller with parallel computational capability. The work centers upon previous developments by the authors in the production and design of Long Range Hybrid Pyroelectric Infrared (PIR) control sensors and Cloud Based Multi-Agent System (CMAS).","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126438185","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982328
V. Vikias, C. Manasis, A. Ktena, N. Assimakis
Power generation forecasting has always been a very important tool for the efficient management, operation and planning of small and large scale power systems. The smart grid architecture featuring electricity markets and distributed generation, with increasing penetration of Renewable Energy Sources, requires more accurate and faster forecasting algorithms. Meteorological parameters affect power generation in the case of conventional as well as Renewable Energy Sources. In this work, we propose the use of Kalman filters to correct the temperature forecast used to determine the expected output of a conventional gas turbine of a power plant participating in the wholesale electricity market in Greece. Time varying, time invariant and steady state Kalman filters are derived. The efficiency of the algorithms is tested through simulations. It is shown that the accuracy of the temperature forecast is significantly improved. The effect of the filtered temperature forecast on the expected of power output of a gas turbine is discussed.
{"title":"Forecasting for Temperature Dependent Power Generation Using Kalman Filtering","authors":"V. Vikias, C. Manasis, A. Ktena, N. Assimakis","doi":"10.1109/RTUCON48111.2019.8982328","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982328","url":null,"abstract":"Power generation forecasting has always been a very important tool for the efficient management, operation and planning of small and large scale power systems. The smart grid architecture featuring electricity markets and distributed generation, with increasing penetration of Renewable Energy Sources, requires more accurate and faster forecasting algorithms. Meteorological parameters affect power generation in the case of conventional as well as Renewable Energy Sources. In this work, we propose the use of Kalman filters to correct the temperature forecast used to determine the expected output of a conventional gas turbine of a power plant participating in the wholesale electricity market in Greece. Time varying, time invariant and steady state Kalman filters are derived. The efficiency of the algorithms is tested through simulations. It is shown that the accuracy of the temperature forecast is significantly improved. The effect of the filtered temperature forecast on the expected of power output of a gas turbine is discussed.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126444599","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982377
S. P. Pimentel, O. Husev, D. Vinnikov, S. Stepenko
In this paper, one technical gap of an indirect model predictive control (MPC) is discussed and a possible solution is proposed. A basic case study involving a traditional three-level h-bridge and a first order L filter was considered in order to magnify the effect of time horizon prediction and voltage over the regulated grid current waveform. An analysis related to the cost function composition over a horizon time prediction is then presented for different settings of the operational point. This paper presents only a part of obtained simulation results by means a model built a PSIM/Powersim. Even so, results show that one step forward could be classified as the most suitable form. And the number of involved applications could be even more since the fact that discussed results also indicate an unnecessity of higher processing time over several horizon time predictions for achieving the best results. Such conclusions would allow a smoother digital implementation of indirect MPC control method and result on a more efficient MPC controller in terms of energy effort in industrial applications.
{"title":"Analysis of Cost Function Composition based on the Horizon Time Prediction of an Indirect MPC Current Control in Single-Phase Grid-Connected PV Inverters","authors":"S. P. Pimentel, O. Husev, D. Vinnikov, S. Stepenko","doi":"10.1109/RTUCON48111.2019.8982377","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982377","url":null,"abstract":"In this paper, one technical gap of an indirect model predictive control (MPC) is discussed and a possible solution is proposed. A basic case study involving a traditional three-level h-bridge and a first order L filter was considered in order to magnify the effect of time horizon prediction and voltage over the regulated grid current waveform. An analysis related to the cost function composition over a horizon time prediction is then presented for different settings of the operational point. This paper presents only a part of obtained simulation results by means a model built a PSIM/Powersim. Even so, results show that one step forward could be classified as the most suitable form. And the number of involved applications could be even more since the fact that discussed results also indicate an unnecessity of higher processing time over several horizon time predictions for achieving the best results. Such conclusions would allow a smoother digital implementation of indirect MPC control method and result on a more efficient MPC controller in terms of energy effort in industrial applications.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114137310","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982361
D. Zinchenko, A. Blinov, D. Vinnikov
Power factor correction feature became demanded in modern converters due to swift increase in penetration of electronic devices. At the same time, implementation of soft-switching modulation techniques allows to reduce the power losses in converters and increase their efficiency. Current source converters have native potential to implement both features. This paper compares well-known parallel resonant, newly emerged adaptive resonant and secondary-modulated topologies in order to evaluate the main benefits and drawbacks and determine the most suitable converters for AC-DC application with soft-switching and power factor correction.
{"title":"Comparison of Isolated Boost Full Bridge Converters for Power Factor Correction Application","authors":"D. Zinchenko, A. Blinov, D. Vinnikov","doi":"10.1109/RTUCON48111.2019.8982361","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982361","url":null,"abstract":"Power factor correction feature became demanded in modern converters due to swift increase in penetration of electronic devices. At the same time, implementation of soft-switching modulation techniques allows to reduce the power losses in converters and increase their efficiency. Current source converters have native potential to implement both features. This paper compares well-known parallel resonant, newly emerged adaptive resonant and secondary-modulated topologies in order to evaluate the main benefits and drawbacks and determine the most suitable converters for AC-DC application with soft-switching and power factor correction.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120954956","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982294
Jānis Eidaks, A. Litvinenko, Jiji Pius Chiriyankandath, Manu Arun Varghese, D. Shah, Yaswanth Keerthi Teja Prathakota
This paper is dedicated to the experimental study of signal waveform and subcarrier number influence on the wireless power transfer (WPT) performance of prefabricated RF harvesting device - Powercast P2110B. This work has been carried out with two different waveform types - with low and high PAPR level. Moreover, the subcarrier number for both types has been varied from 8 to 32. Single tone signal was used as a reference for the result comparison and evaluation. The WPT experiment was performed with two different antenna types in the unlicensed ISM band in the frequency range from 863 to 868 MHz. The WPT study was conducted under real life scenario.
{"title":"Impact of signal waveform on RF-harvesting device performance in wireless sensor network","authors":"Jānis Eidaks, A. Litvinenko, Jiji Pius Chiriyankandath, Manu Arun Varghese, D. Shah, Yaswanth Keerthi Teja Prathakota","doi":"10.1109/RTUCON48111.2019.8982294","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982294","url":null,"abstract":"This paper is dedicated to the experimental study of signal waveform and subcarrier number influence on the wireless power transfer (WPT) performance of prefabricated RF harvesting device - Powercast P2110B. This work has been carried out with two different waveform types - with low and high PAPR level. Moreover, the subcarrier number for both types has been varied from 8 to 32. Single tone signal was used as a reference for the result comparison and evaluation. The WPT experiment was performed with two different antenna types in the unlicensed ISM band in the frequency range from 863 to 868 MHz. The WPT study was conducted under real life scenario.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122816433","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982329
O. Matiushin, O. Husev, D. Vinnikov
This document presents an approach for getting and calculation the parameters of Proportional- Resonant (PR) controller for the twisted-bidirectional buck-boost inverter based on unfolding circuit. The obtained results are suitable theoretical guidelines for an investigation of selected topology dynamic. The results of small signal model allow estimating the stability of the system. The simulation results of grid-connected inverter based on the PR controller are presented. As the result simple PR controller without any compensation block is stable, but can't provide high accuracy of the grid current in real experiment.
{"title":"Small Signal Model of the Buck-Boost Bidirectional DC-AC Converter Based on Unfolding Circuit","authors":"O. Matiushin, O. Husev, D. Vinnikov","doi":"10.1109/RTUCON48111.2019.8982329","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982329","url":null,"abstract":"This document presents an approach for getting and calculation the parameters of Proportional- Resonant (PR) controller for the twisted-bidirectional buck-boost inverter based on unfolding circuit. The obtained results are suitable theoretical guidelines for an investigation of selected topology dynamic. The results of small signal model allow estimating the stability of the system. The simulation results of grid-connected inverter based on the PR controller are presented. As the result simple PR controller without any compensation block is stable, but can't provide high accuracy of the grid current in real experiment.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133306562","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982253
A. Egorov, E. Kochneva, A. Larionova, E. Lyukhanov, S.E. Shender
Key priority of the power industry is associated with power losses reduction during electrical energy transmission and distribution. Problem solution depends significantly on power grid companies' equipment with modern automated meter reading (AMR) technologies. The main approach for power consumption accuracy and meters conditions control is the balance method. The cost of electricity received from the AMR system data is used for the calculation of the controlled facility Electricity balances, load graphs geometric profile construction and power losses operational calculation are performed, the technical and commercial power losses are calculated, the factual and permissible non-balance are represented on the basis of the electrical circuit and power equipment passport data under study. The results presented in a visual interface allow making quickly decisions about the commercial data reliability and electricity metering system serviceability. Power unbalance cases were detected on identified intervals where the accounting system worked correctly. All detected unbalance cases were anchored to place and time. A three-level metrological characteristics control system prototype was made in infographic format. Balances and losses rapid calculation at hour and less time intervals allows detecting malfunctions in AMR systems performance and taking measures for their elimination.
{"title":"On-line Electrical Energy Balance Monitoring System for Power Networks Enterprise Facilities","authors":"A. Egorov, E. Kochneva, A. Larionova, E. Lyukhanov, S.E. Shender","doi":"10.1109/RTUCON48111.2019.8982253","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982253","url":null,"abstract":"Key priority of the power industry is associated with power losses reduction during electrical energy transmission and distribution. Problem solution depends significantly on power grid companies' equipment with modern automated meter reading (AMR) technologies. The main approach for power consumption accuracy and meters conditions control is the balance method. The cost of electricity received from the AMR system data is used for the calculation of the controlled facility Electricity balances, load graphs geometric profile construction and power losses operational calculation are performed, the technical and commercial power losses are calculated, the factual and permissible non-balance are represented on the basis of the electrical circuit and power equipment passport data under study. The results presented in a visual interface allow making quickly decisions about the commercial data reliability and electricity metering system serviceability. Power unbalance cases were detected on identified intervals where the accounting system worked correctly. All detected unbalance cases were anchored to place and time. A three-level metrological characteristics control system prototype was made in infographic format. Balances and losses rapid calculation at hour and less time intervals allows detecting malfunctions in AMR systems performance and taking measures for their elimination.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133745904","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982300
M. Gorobetz, A. Potapovs, A. Korneyev
The main challenge of the research is to increase energy efficiency and reduce electrical energy consumption of multi-rotor unmanned aerial vehicles (UAV) by optimal control of the electrical traction drive. The goal of this paper is to analyze traction drive of multi-rotor unmanned aerial vehicles (UAV) and to develop mathematical and computer model based on empirical data of experimental statistics. The results of research allow concluding that model based on the data is usable and precise. It gives possibility to control both energy consumption of the UAV and discharge of the battery and use this values for energy efficiency optimization.
{"title":"Analysis and modelling of UAV electrical traction drive based on empirical data for energy efficiency tasks","authors":"M. Gorobetz, A. Potapovs, A. Korneyev","doi":"10.1109/RTUCON48111.2019.8982300","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982300","url":null,"abstract":"The main challenge of the research is to increase energy efficiency and reduce electrical energy consumption of multi-rotor unmanned aerial vehicles (UAV) by optimal control of the electrical traction drive. The goal of this paper is to analyze traction drive of multi-rotor unmanned aerial vehicles (UAV) and to develop mathematical and computer model based on empirical data of experimental statistics. The results of research allow concluding that model based on the data is usable and precise. It gives possibility to control both energy consumption of the UAV and discharge of the battery and use this values for energy efficiency optimization.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116182557","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 : 2019-10-01DOI: 10.1109/RTUCON48111.2019.8982265
Deniss Brodņevs, M. Hauka
This paper presents a unified method for estimating latencies in a parallel redundant network with losses. The proposed method is based on mathematical statistics and, in the opinion of the authors, is more instructive in small networks than typical estimations that are based on the Markov chain model, which is recommended by ITU. The method requires known CDFs of latencies of parallel networks, as well as their packet loss rates. The CDFs can be built from experimental data or can be approximated in accordance to assumed distribution function. The method eliminates the need to calculate the transition probabilities that are required in the Markov chain. Also, the method can be used for various number of parallel networks. However, the method is applicable only for independent networks
{"title":"Method for estimating delays in parallel redundant data transfer networks","authors":"Deniss Brodņevs, M. Hauka","doi":"10.1109/RTUCON48111.2019.8982265","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982265","url":null,"abstract":"This paper presents a unified method for estimating latencies in a parallel redundant network with losses. The proposed method is based on mathematical statistics and, in the opinion of the authors, is more instructive in small networks than typical estimations that are based on the Markov chain model, which is recommended by ITU. The method requires known CDFs of latencies of parallel networks, as well as their packet loss rates. The CDFs can be built from experimental data or can be approximated in accordance to assumed distribution function. The method eliminates the need to calculate the transition probabilities that are required in the Markov chain. Also, the method can be used for various number of parallel networks. However, the method is applicable only for independent networks","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124973620","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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