Pub Date : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263145
O. Shutenko, O. Kulyk
The article presents the complex analysis results of gas content in oil of 84 high-voltage transformers with "overheating in the temperature range of 150-300°C" and electric discharges of different intensity. Values of gases percentage and gas ratio for each defect type are determined. Nomograms and graphical defect areas have been constructed. A comparative analysis of the diagnostic results of the analysed transformers using 9 well-known methods is made. It is established that diagnoses made with the use of different methods may differ significantly from each other as well as from real diagnoses. The given data allow to increase the recognition reliability of the defect type according to the results of the analysis of dissolved gases in oil.
{"title":"Recognition of Overheating with Temperatures of 150-300°C by Analysis of Dissolved Gases in Oil","authors":"O. Shutenko, O. Kulyk","doi":"10.1109/IEPS51250.2020.9263145","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263145","url":null,"abstract":"The article presents the complex analysis results of gas content in oil of 84 high-voltage transformers with \"overheating in the temperature range of 150-300°C\" and electric discharges of different intensity. Values of gases percentage and gas ratio for each defect type are determined. Nomograms and graphical defect areas have been constructed. A comparative analysis of the diagnostic results of the analysed transformers using 9 well-known methods is made. It is established that diagnoses made with the use of different methods may differ significantly from each other as well as from real diagnoses. The given data allow to increase the recognition reliability of the defect type according to the results of the analysis of dissolved gases in oil.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129064668","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263169
B. Kuznetsov, I. Bovdui, T. Nikitina, V. Kolomiets, B. Kobilyanskiy
The method of two degree of freedom nonlinear robust control by multi-motor plant related electric drives with uncertain plant parameters is developed. Hamilton-Jacobi-Isaacs equations decision use for nonlinear robust controllers and nonlinear robust observer synthesis. Dynamic characteristics modeling end experimental researching for synthesized nonlinear robust rolling mills main electric drives with uncertain parameters and taking into account the mutual influence of the rolls through the rolled metal for various modes of the system operation with different input signals and for various values of the plant parameters are given.
{"title":"Multi-Motor Plant Related Electric Drives Robust Control Synthesis","authors":"B. Kuznetsov, I. Bovdui, T. Nikitina, V. Kolomiets, B. Kobilyanskiy","doi":"10.1109/IEPS51250.2020.9263169","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263169","url":null,"abstract":"The method of two degree of freedom nonlinear robust control by multi-motor plant related electric drives with uncertain plant parameters is developed. Hamilton-Jacobi-Isaacs equations decision use for nonlinear robust controllers and nonlinear robust observer synthesis. Dynamic characteristics modeling end experimental researching for synthesized nonlinear robust rolling mills main electric drives with uncertain parameters and taking into account the mutual influence of the rolls through the rolled metal for various modes of the system operation with different input signals and for various values of the plant parameters are given.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134508197","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263221
K. Korytchenko, R. Tomashevskiy, I. Varshamova, I. Polyakov, Igor Hrytsyna, M. Chyrkina
A voltage drop across reactance of an expanding spark channel was numerically studied in the paper. Changes in the discharge current and radius of the conductive spark channel over time were determined by the spark expansion simulation. This data was used to calculate changes in channel inductance and voltage drop across the reactance of a spark. The analysis of the influence of energy stored in the channel inductance on the measurement of the discharge energy dissipated in the spark was carried out.
{"title":"Investigation of Voltage Drop across Reactance of Expanding Spark Channel","authors":"K. Korytchenko, R. Tomashevskiy, I. Varshamova, I. Polyakov, Igor Hrytsyna, M. Chyrkina","doi":"10.1109/IEPS51250.2020.9263221","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263221","url":null,"abstract":"A voltage drop across reactance of an expanding spark channel was numerically studied in the paper. Changes in the discharge current and radius of the conductive spark channel over time were determined by the spark expansion simulation. This data was used to calculate changes in channel inductance and voltage drop across the reactance of a spark. The analysis of the influence of energy stored in the channel inductance on the measurement of the discharge energy dissipated in the spark was carried out.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131594143","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263148
T. Mysak, Ivan Shapoval
A simple control strategy of the three-phase shunt active power filter that is connected to a non-linear load network is proposed. The filter consists of a voltage source inverter on fully controlled switches, capacitor storage, and a first-order three-phase RL filter. The decomposition of the object of study according to the rates of motion of the dynamic system was performed. The fast subsystem is a circuit of compensation current control, the slow subsystem performs stabilization of the capacitor voltage. An asymptotic double-twisting algorithm to control the DC voltage was used. For the current formation, a two-dimensional sliding surface is used, which is a linear combination of the components of two-dimensional vectors - the error of the current of the RL filter and some variable. The double-twisting algorithm to calculate the instantaneous value of this variable was also used. A simulation model is developed and the results of digital experiments are analyzed. A comparison of the proposed strategy with the traditional PI-regulation by the criteria of the duration of the transition process and the coefficient of harmonic distortions in the current consumed from the network is made.
{"title":"A simple control strategy for a three-phase shunt active power filter based on second-order sliding mode","authors":"T. Mysak, Ivan Shapoval","doi":"10.1109/IEPS51250.2020.9263148","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263148","url":null,"abstract":"A simple control strategy of the three-phase shunt active power filter that is connected to a non-linear load network is proposed. The filter consists of a voltage source inverter on fully controlled switches, capacitor storage, and a first-order three-phase RL filter. The decomposition of the object of study according to the rates of motion of the dynamic system was performed. The fast subsystem is a circuit of compensation current control, the slow subsystem performs stabilization of the capacitor voltage. An asymptotic double-twisting algorithm to control the DC voltage was used. For the current formation, a two-dimensional sliding surface is used, which is a linear combination of the components of two-dimensional vectors - the error of the current of the RL filter and some variable. The double-twisting algorithm to calculate the instantaneous value of this variable was also used. A simulation model is developed and the results of digital experiments are analyzed. A comparison of the proposed strategy with the traditional PI-regulation by the criteria of the duration of the transition process and the coefficient of harmonic distortions in the current consumed from the network is made.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128733826","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263133
M. Rezinkina, O. Rezinkin, S. Buryakovskiy
Mathematical modeling of the processes at the electromagnetic fields (EMF) of natural and artificial origin application to sensitive electronic equipment has been carried out. Test installations for full-scale physical modeling of the EMF impulses impacts on sensitive electronic equipment, aviation technique, etc. or their critical parts have been elaborated.
{"title":"Physical and Mathematical Modelling of Electrophysical Processes for Solution of Electromagnetic Compatibility Problems","authors":"M. Rezinkina, O. Rezinkin, S. Buryakovskiy","doi":"10.1109/IEPS51250.2020.9263133","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263133","url":null,"abstract":"Mathematical modeling of the processes at the electromagnetic fields (EMF) of natural and artificial origin application to sensitive electronic equipment has been carried out. Test installations for full-scale physical modeling of the EMF impulses impacts on sensitive electronic equipment, aviation technique, etc. or their critical parts have been elaborated.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126574683","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263215
O. Dovgalyuk, H. Omelianenko, R. Bondarenko, I. Yakovenko, S. Saidov, Igor Strilyaniy
The peculiarities of the development for solar energy in the world and in Ukraine are analyzed, on the basis of which the main advantages and prospects for the development of this industry are determined. The main characteristics of solar power plants as elements of electrical networks are considered and the necessity of studying their influence on the operating modes of electrical networks is substantiated. The analysis of the steady state modes of operation of electric networks, indicators of electric energy quality and static stability margin for a part of the electric energy system after solar power plant connection is performed.
{"title":"Analysis of Operation Modes of Electric Networks with Solar Power Plants","authors":"O. Dovgalyuk, H. Omelianenko, R. Bondarenko, I. Yakovenko, S. Saidov, Igor Strilyaniy","doi":"10.1109/IEPS51250.2020.9263215","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263215","url":null,"abstract":"The peculiarities of the development for solar energy in the world and in Ukraine are analyzed, on the basis of which the main advantages and prospects for the development of this industry are determined. The main characteristics of solar power plants as elements of electrical networks are considered and the necessity of studying their influence on the operating modes of electrical networks is substantiated. The analysis of the steady state modes of operation of electric networks, indicators of electric energy quality and static stability margin for a part of the electric energy system after solar power plant connection is performed.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133382058","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263177
V. Zamaruiev, V. Ivakhno, B. Styslo
In the paper, the expediency of using several active power filters (APF) operating in non-overlapping frequency ranges - cooperative converters as parts of the active power line conditioner is considered. These APFs provide mitigation of the current higher harmonics of a 6-, 12-, 18- or 24-pulse rectifier, which is a nonlinear load of the main. The boundary frequency of two cooperative converters is selected, which provides a minimum of the total power of losses in IGBT of active power filters. It is shown that in a system with a 6-pulse rectifier, the power of losses in switches of APF can be reduced by 24%.
{"title":"Using Cooperative Converters in Active Power Line Conditioners","authors":"V. Zamaruiev, V. Ivakhno, B. Styslo","doi":"10.1109/IEPS51250.2020.9263177","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263177","url":null,"abstract":"In the paper, the expediency of using several active power filters (APF) operating in non-overlapping frequency ranges - cooperative converters as parts of the active power line conditioner is considered. These APFs provide mitigation of the current higher harmonics of a 6-, 12-, 18- or 24-pulse rectifier, which is a nonlinear load of the main. The boundary frequency of two cooperative converters is selected, which provides a minimum of the total power of losses in IGBT of active power filters. It is shown that in a system with a 6-pulse rectifier, the power of losses in switches of APF can be reduced by 24%.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115350522","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263228
M. Kirichenko, R. Zaitsev, A. Drozdov, G. Khrypunov, K. Minakova, V.E. Martseniuk, A. Drozdova
At present, the task of creating nanosecond pulse generators remains highly specialized, but quite relevant. The main direction of such generators using is to study the interaction of thin film layers from semiconductor materials with high-energy electromagnetic pulses and problem of protection elements against electromagnetic pulses development. The most common variant of a nanosecond pulse generator is a cable-based generator. The main element is a charging line in the form of a coaxial cable with 50 Ohms resistance. A mercury reed switch was used as the trigger, which allowed obtaining a voltage pulse rise time no more than 2 ns. In the process of cable discharge on to consistent load, the pulse amplitude is half of cable charge voltage. This type of generator is quite difficult to set up and operate in order to maintain the optimum parameters of their operation. For its control and power supply it has been developed and manufactured an electronic unit based on microcontroller. It provides powering up of charging line with voltage in the range from 40 to 400 V with steps no more than 1 V, implements manual start of a single pulse and automatic controlled operation mode with series of pulses (period from 1 s, up to hours) and provides the necessary indication of operating modes, including high-voltage DC power generation modes. This control device makes it easier for the user to work with charging line for high-voltage research and provide appropriate safety.
{"title":"Control and power supply device for nanosecond EMP generator","authors":"M. Kirichenko, R. Zaitsev, A. Drozdov, G. Khrypunov, K. Minakova, V.E. Martseniuk, A. Drozdova","doi":"10.1109/IEPS51250.2020.9263228","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263228","url":null,"abstract":"At present, the task of creating nanosecond pulse generators remains highly specialized, but quite relevant. The main direction of such generators using is to study the interaction of thin film layers from semiconductor materials with high-energy electromagnetic pulses and problem of protection elements against electromagnetic pulses development. The most common variant of a nanosecond pulse generator is a cable-based generator. The main element is a charging line in the form of a coaxial cable with 50 Ohms resistance. A mercury reed switch was used as the trigger, which allowed obtaining a voltage pulse rise time no more than 2 ns. In the process of cable discharge on to consistent load, the pulse amplitude is half of cable charge voltage. This type of generator is quite difficult to set up and operate in order to maintain the optimum parameters of their operation. For its control and power supply it has been developed and manufactured an electronic unit based on microcontroller. It provides powering up of charging line with voltage in the range from 40 to 400 V with steps no more than 1 V, implements manual start of a single pulse and automatic controlled operation mode with series of pulses (period from 1 s, up to hours) and provides the necessary indication of operating modes, including high-voltage DC power generation modes. This control device makes it easier for the user to work with charging line for high-voltage research and provide appropriate safety.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115044693","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263172
V. Zamaruiev, V. Ivakhno, V. Makarov, B. Styslo
Reducing the power of losses in modern DC systems, such as: DC lines `and DC links in systems with renewable energy sources, railway transport, etc. requires tools that can determine the causes of losses and determine their contribution. The development of power theories and related tools mainly takes place for AC lines. Currently, the power factor, introduced into practice at the end of the 19th, beginning of the 20th century, is widely used. In the modern interpretation, it is not applicable to DC systems. The authors propose to unify the concept of power factor. The used approach is based on the existing definition of power factor and its constituents, such as THDI, distortion power ets., expanding its applicability to DC systems.
{"title":"Power Factor and Harmonic Distortion Determination for DC Power Lines","authors":"V. Zamaruiev, V. Ivakhno, V. Makarov, B. Styslo","doi":"10.1109/IEPS51250.2020.9263172","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263172","url":null,"abstract":"Reducing the power of losses in modern DC systems, such as: DC lines `and DC links in systems with renewable energy sources, railway transport, etc. requires tools that can determine the causes of losses and determine their contribution. The development of power theories and related tools mainly takes place for AC lines. Currently, the power factor, introduced into practice at the end of the 19th, beginning of the 20th century, is widely used. In the modern interpretation, it is not applicable to DC systems. The authors propose to unify the concept of power factor. The used approach is based on the existing definition of power factor and its constituents, such as THDI, distortion power ets., expanding its applicability to DC systems.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115667392","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 : 2020-09-07DOI: 10.1109/IEPS51250.2020.9263175
Y. Sokol, Oleg Avrunin, K. Kolisnyk, P. Zamiatin
The authors examined the features of the use of telemedicine imaging in special conditions in order to determine the potential ways to increase its effectiveness as part of modern medical information and analytical systems for emergency situations.The problem area was identified and the main directions for improving these systems based on the mathematical program analysis of the processing and presentation of medical image information were outlined.
{"title":"Using Medical Imaging in Disaster Medicine","authors":"Y. Sokol, Oleg Avrunin, K. Kolisnyk, P. Zamiatin","doi":"10.1109/IEPS51250.2020.9263175","DOIUrl":"https://doi.org/10.1109/IEPS51250.2020.9263175","url":null,"abstract":"The authors examined the features of the use of telemedicine imaging in special conditions in order to determine the potential ways to increase its effectiveness as part of modern medical information and analytical systems for emergency situations.The problem area was identified and the main directions for improving these systems based on the mathematical program analysis of the processing and presentation of medical image information were outlined.","PeriodicalId":235261,"journal":{"name":"2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121342492","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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