Pub Date : 2022-10-12DOI: 10.1109/ESS57819.2022.9969281
A. Kondratiev, Oleksii Vambol, Marvna Shevtsova, A. Tsaritsynskyi, T. Nabokina
The present advancement of technologies for manufacturing composite products and a wide range of composite materials make it possible to manufacture products of various shapes and sizes, while ensuring their high quality and excellent electrical characteristics. However, the temperature-time regimes for moulding composite products used at most enterprises are quite energy and time consuming. Moreover, thermal residual stresses and strains in the obtained product can make its further use impossible. The aim of the article is to develop a technique for determining the temperature difference across the thickness of the package of a polymer composite material being moulded with regard to technological and design factors. Analytical dependences that allow calculating the temperature difference across the thickness of the composite package during moulding have been obtained. The solution of the thermal problem was reduced to determining the temperature field in the product being moulded. The analysis revealed the dependence of the temperature field on the characteristics and properties of the material being moulded and the characteristics of the main and auxiliary tool. To solve the problem of thermal conductivity, the distribution of the temperature field in the main tool, product being moulded and auxiliary tool was calculated. In this case, the boundary conditions at the joints were the same for the contacting elements. An analysis of the factors affecting a temperature gradient across the composite package, which were included in the obtained dependences, was carried out. Moreover, possible ways to reduce the unevenness of the temperature field by technological and design methods were considered. The results obtained made it possible to reduce the temperature difference across the thickness of the composite package being moulded without additional production costs.
{"title":"Influence of Technological and Design Factors on the Temperature Distribution in a Composite Being Moulded","authors":"A. Kondratiev, Oleksii Vambol, Marvna Shevtsova, A. Tsaritsynskyi, T. Nabokina","doi":"10.1109/ESS57819.2022.9969281","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969281","url":null,"abstract":"The present advancement of technologies for manufacturing composite products and a wide range of composite materials make it possible to manufacture products of various shapes and sizes, while ensuring their high quality and excellent electrical characteristics. However, the temperature-time regimes for moulding composite products used at most enterprises are quite energy and time consuming. Moreover, thermal residual stresses and strains in the obtained product can make its further use impossible. The aim of the article is to develop a technique for determining the temperature difference across the thickness of the package of a polymer composite material being moulded with regard to technological and design factors. Analytical dependences that allow calculating the temperature difference across the thickness of the composite package during moulding have been obtained. The solution of the thermal problem was reduced to determining the temperature field in the product being moulded. The analysis revealed the dependence of the temperature field on the characteristics and properties of the material being moulded and the characteristics of the main and auxiliary tool. To solve the problem of thermal conductivity, the distribution of the temperature field in the main tool, product being moulded and auxiliary tool was calculated. In this case, the boundary conditions at the joints were the same for the contacting elements. An analysis of the factors affecting a temperature gradient across the composite package, which were included in the obtained dependences, was carried out. Moreover, possible ways to reduce the unevenness of the temperature field by technological and design methods were considered. The results obtained made it possible to reduce the temperature difference across the thickness of the composite package being moulded without additional production costs.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"11 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":"125139746","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 : 2022-10-12DOI: 10.1109/ESS57819.2022.9969308
V. Opryshko, S. Denysiuk, B. Basok, O. Lysenko, D. Biriukov
It is symbolic that on the first day of the full-scale invasion on February 24 2022, the Ukrainian power system had a planned disconnection from the aggressor's power grids, switched to isolated mode together with the Moldovan energy system, and later began to work in parallel with ENTSO-E. The purpose is to analyze available data on system and market behavior. For after-war development and energy security objectives in terms of energy sanctions, we have to look for all available resources to never get back on russian oil&gas needle. One of the lowest hanging fruits is available consumer resource, which can be harvested with demand response and demand side management mechanisms. Results showed that there is a great potential for implementing Aggregators entities in Ukraine.
{"title":"Demand Response as a possible new service in after-war Ukrainian power system","authors":"V. Opryshko, S. Denysiuk, B. Basok, O. Lysenko, D. Biriukov","doi":"10.1109/ESS57819.2022.9969308","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969308","url":null,"abstract":"It is symbolic that on the first day of the full-scale invasion on February 24 2022, the Ukrainian power system had a planned disconnection from the aggressor's power grids, switched to isolated mode together with the Moldovan energy system, and later began to work in parallel with ENTSO-E. The purpose is to analyze available data on system and market behavior. For after-war development and energy security objectives in terms of energy sanctions, we have to look for all available resources to never get back on russian oil&gas needle. One of the lowest hanging fruits is available consumer resource, which can be harvested with demand response and demand side management mechanisms. Results showed that there is a great potential for implementing Aggregators entities in Ukraine.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"44 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":"126146721","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 : 2022-10-12DOI: 10.1109/ess57819.2022.9969249
{"title":"Section 1. Smart Energy, Power and Energy Engineering","authors":"","doi":"10.1109/ess57819.2022.9969249","DOIUrl":"https://doi.org/10.1109/ess57819.2022.9969249","url":null,"abstract":"","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":"117017143","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 : 2022-10-12DOI: 10.1109/ESS57819.2022.9969244
S. Denysiuk, D. Derevianko, H. Bielokha, S. Zaichenko
The paper presents an overview of the cost-effective reliability improvement methods in power systems with renewables. The rapid development of Microgrids as part of the general power supply systems states the problem of choosing the optimal technologies for its composition. The cost-based approach is most efficient for Microgrids and distribution networks with distributed generation and energy stirage systems. The cost function for the Microgrid system depends on the mode of its operation. Microgrid buys electricity in the general network or sells the surplus to get income. To address the reliability issue in systems with distributed generation sources the financial mechanism is proposed. This mechanism allows to address the reliability issue of the examined energy systems in the stage of their design but also during the operation.
{"title":"Cost-effective Reliability Improvement Methods in Power Systems with Renewables","authors":"S. Denysiuk, D. Derevianko, H. Bielokha, S. Zaichenko","doi":"10.1109/ESS57819.2022.9969244","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969244","url":null,"abstract":"The paper presents an overview of the cost-effective reliability improvement methods in power systems with renewables. The rapid development of Microgrids as part of the general power supply systems states the problem of choosing the optimal technologies for its composition. The cost-based approach is most efficient for Microgrids and distribution networks with distributed generation and energy stirage systems. The cost function for the Microgrid system depends on the mode of its operation. Microgrid buys electricity in the general network or sells the surplus to get income. To address the reliability issue in systems with distributed generation sources the financial mechanism is proposed. This mechanism allows to address the reliability issue of the examined energy systems in the stage of their design but also during the operation.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"104 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":"122589831","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 : 2022-10-12DOI: 10.1109/ESS57819.2022.9969345
S. Denysiuk, H. Bielokha, D. Derevianko, Bronytskyi Vadym
Solar energy is one of the most widely used renewable energy sources. A power converter is required to match the parameters of PV modules and the load (network). The article features a PV converter with a hysteresis control system, which consists of a boost converter and inverter. The inverter generates a sinusoidal current in the load (network) according to power quality standards. Digital simulation was carried out for two cases, namely: at variable temperature (constant irradiance) and at variable irradiance (constant temperature). In all operating modes, the power consumption was maximum and the output current was sinusoidal. There was developed a control system with hysteresis controllers, which made it possible to ensure high performance, accuracy, electromagnetic compatibility of the output current of the inverter with the network. THD was less than 5% within the entire range of studies. Inverter circuits, which were connected to a four-wire network, provided better current quality results than three-wire ones. This is due to the fact that there is phase interference in three-wire networks. In both cases, efficiency was almost the same and depended on the power of the PV modules.
{"title":"Design and modeling PV converter with hysteresis control","authors":"S. Denysiuk, H. Bielokha, D. Derevianko, Bronytskyi Vadym","doi":"10.1109/ESS57819.2022.9969345","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969345","url":null,"abstract":"Solar energy is one of the most widely used renewable energy sources. A power converter is required to match the parameters of PV modules and the load (network). The article features a PV converter with a hysteresis control system, which consists of a boost converter and inverter. The inverter generates a sinusoidal current in the load (network) according to power quality standards. Digital simulation was carried out for two cases, namely: at variable temperature (constant irradiance) and at variable irradiance (constant temperature). In all operating modes, the power consumption was maximum and the output current was sinusoidal. There was developed a control system with hysteresis controllers, which made it possible to ensure high performance, accuracy, electromagnetic compatibility of the output current of the inverter with the network. THD was less than 5% within the entire range of studies. Inverter circuits, which were connected to a four-wire network, provided better current quality results than three-wire ones. This is due to the fact that there is phase interference in three-wire networks. In both cases, efficiency was almost the same and depended on the power of the PV modules.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"11 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":"116971942","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 : 2022-10-12DOI: 10.1109/ESS57819.2022.9969319
I. Shvedchykova, J. Romanchenko, Inna Melkonova, Hryhoriy Melkonov, Andrii Pisotskii
The paper is devoted to the study of the possibilities of electrical energy generation using wind turbines in some regions of Eastern Ukraine. It is proved that diversification of electricity production in the region and investments in the development of renewable energy sources will help overcome the crisis situations in the energy sector. Preliminary processing of statistical data on wind speed for the city of Severodonetsk (Luhansk region) according to the results of which models of low-power wind turbine generators with a vertical axis of rotation were selected, and the calculation of the electricity produced by them was carried out. The dependence of the initial conditionally single power of wind turbines, which was used in the calculations of the average monthly and average annual generation indicators, is proposed. A comparison of generation indicators for three models of wind turbine generators was made. It showed that the most effective for use in this region are models that work in conditions of relatively small starting and rated wind speeds.
{"title":"Possibilities of Electricity Generation Using Small Wind Generators in Eastern Ukraine","authors":"I. Shvedchykova, J. Romanchenko, Inna Melkonova, Hryhoriy Melkonov, Andrii Pisotskii","doi":"10.1109/ESS57819.2022.9969319","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969319","url":null,"abstract":"The paper is devoted to the study of the possibilities of electrical energy generation using wind turbines in some regions of Eastern Ukraine. It is proved that diversification of electricity production in the region and investments in the development of renewable energy sources will help overcome the crisis situations in the energy sector. Preliminary processing of statistical data on wind speed for the city of Severodonetsk (Luhansk region) according to the results of which models of low-power wind turbine generators with a vertical axis of rotation were selected, and the calculation of the electricity produced by them was carried out. The dependence of the initial conditionally single power of wind turbines, which was used in the calculations of the average monthly and average annual generation indicators, is proposed. A comparison of generation indicators for three models of wind turbine generators was made. It showed that the most effective for use in this region are models that work in conditions of relatively small starting and rated wind speeds.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"21 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":"114500793","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 : 2022-10-12DOI: 10.1109/ESS57819.2022.9969252
S. Zaichenko, S. Denysiuk, Göktay Ediz, U. Ercetin, D. Derevianko, V. Dubovyk
This paper presents experimental studies to determine the energy performance of the generator using gasoline and liquefied petroleum gas. The following are selected as energy indicators using liquefied petroleum gas and gasoline: specific fuel consumption and energy efficiency factor of the power plant. The highest specific fuel consumption is observed at the lowest and heaviest loads. It has been found that the highest valuesof efficiency for different fuels are observed at different loads. The established values of the distribution of energy indicators allow to predict the optimal parameters of autonomous installations using different types of fuels at different load levels.
{"title":"Comparison of energy efficiency of a synchronous electric generator with a spark ignition engine using liquefied petroleum gas and gasoline","authors":"S. Zaichenko, S. Denysiuk, Göktay Ediz, U. Ercetin, D. Derevianko, V. Dubovyk","doi":"10.1109/ESS57819.2022.9969252","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969252","url":null,"abstract":"This paper presents experimental studies to determine the energy performance of the generator using gasoline and liquefied petroleum gas. The following are selected as energy indicators using liquefied petroleum gas and gasoline: specific fuel consumption and energy efficiency factor of the power plant. The highest specific fuel consumption is observed at the lowest and heaviest loads. It has been found that the highest valuesof efficiency for different fuels are observed at different loads. The established values of the distribution of energy indicators allow to predict the optimal parameters of autonomous installations using different types of fuels at different load levels.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"134 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":"122800758","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 : 2022-10-12DOI: 10.1109/ESS57819.2022.9969296
S. Popov, M. Ishchenko, O. Savytskyi, L. Ishchenko, D. Veselovsky
An urgent task of power supply of large industrial regions with high power consumption, complex power supply schemes, and instability of their operating modes is the need to accurately predict the amount of power losses. Reducing the magnitude of these losses can be ensured by proper parameterization of networks and operational control of their mode of operation. The complexity of solving this problem is due to the structural complexity of power supply systems and the instability of electricity consumption over time. The amount of electricity losses in the network depends on the technical characteristics of the network, its current state and on the modes of transmission of electricity in its branches. The authors have developed a mathematical model that makes it possible to predict the magnitude of such losses based on a comprehensive account of the design features of the network and the regime characteristics of its operation over time. In this model, to calculate power losses, a special model is proposed for replacing the electrical network with an integral function that takes into account the uneven distribution of loads, the variability of the load in the network branches, and the dispersion of the consumed electrical power over time. The loss of energy in the network depends on the power consumed, and this power itself changes over time, and therefore the losses of electricity are not constant over time. This factor is taken into account by the indicator of the dispersion of power consumption over time, which can be calculated according to the practice of illogical networks. Thus, the mathematical model developed by the authors makes it possible to determine the predicted losses of electricity during the operation of large electrical networks, to determine their rational parameters and the optimal modes of operation of the networks necessary for the operational management of these modes.
{"title":"Mathematical Model Of The Power Supply System Of Large Industrial Regions For Operational Control Of Its Mode Characteristics","authors":"S. Popov, M. Ishchenko, O. Savytskyi, L. Ishchenko, D. Veselovsky","doi":"10.1109/ESS57819.2022.9969296","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969296","url":null,"abstract":"An urgent task of power supply of large industrial regions with high power consumption, complex power supply schemes, and instability of their operating modes is the need to accurately predict the amount of power losses. Reducing the magnitude of these losses can be ensured by proper parameterization of networks and operational control of their mode of operation. The complexity of solving this problem is due to the structural complexity of power supply systems and the instability of electricity consumption over time. The amount of electricity losses in the network depends on the technical characteristics of the network, its current state and on the modes of transmission of electricity in its branches. The authors have developed a mathematical model that makes it possible to predict the magnitude of such losses based on a comprehensive account of the design features of the network and the regime characteristics of its operation over time. In this model, to calculate power losses, a special model is proposed for replacing the electrical network with an integral function that takes into account the uneven distribution of loads, the variability of the load in the network branches, and the dispersion of the consumed electrical power over time. The loss of energy in the network depends on the power consumed, and this power itself changes over time, and therefore the losses of electricity are not constant over time. This factor is taken into account by the indicator of the dispersion of power consumption over time, which can be calculated according to the practice of illogical networks. Thus, the mathematical model developed by the authors makes it possible to determine the predicted losses of electricity during the operation of large electrical networks, to determine their rational parameters and the optimal modes of operation of the networks necessary for the operational management of these modes.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"56 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":"123436219","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 : 2022-10-12DOI: 10.1109/ESS57819.2022.9969248
K. Bratkovska, P. Makhlin, A. Shram, D. Kulagin, D. Fedosha
A positive result of the power-time diagrams balancing is considered from the point of view of all process participants. Importance of changes in the organization of consumer load is shown. Optimization of the company's power-time diagrams by minimizing of consumed electricity paying cost criterion and balancing the consumers' power-time diagram by the least square's method, the fill factor and the form factor methods is analyzed. The results indicate that from the point of view of the enterprise, multifactor optimization may be of interest, i.e., simultaneous consideration of several or all of the considered criteria.
{"title":"Estimation of Optimization Approaches of the Energy Intensive Equipment's Power-Time Diagrams of Industrial Enterprises","authors":"K. Bratkovska, P. Makhlin, A. Shram, D. Kulagin, D. Fedosha","doi":"10.1109/ESS57819.2022.9969248","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969248","url":null,"abstract":"A positive result of the power-time diagrams balancing is considered from the point of view of all process participants. Importance of changes in the organization of consumer load is shown. Optimization of the company's power-time diagrams by minimizing of consumed electricity paying cost criterion and balancing the consumers' power-time diagram by the least square's method, the fill factor and the form factor methods is analyzed. The results indicate that from the point of view of the enterprise, multifactor optimization may be of interest, i.e., simultaneous consideration of several or all of the considered criteria.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"90 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":"129813744","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 : 2022-10-12DOI: 10.1109/ess57819.2022.9969317
{"title":"Section 5. Policies, Markets and Challenges","authors":"","doi":"10.1109/ess57819.2022.9969317","DOIUrl":"https://doi.org/10.1109/ess57819.2022.9969317","url":null,"abstract":"","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":"126342507","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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