Pub Date : 2022-10-12DOI: 10.1109/ESS57819.2022.9969234
Olexandr Shavolkin, I. Shvedchykova, M. Kolcun, Dušan Medved’
The purpose of the work is the improvement the technique of the parameter's choice and control of the solar-wind system. The calculation of the system parameters for the taken schedule of the load is considered in the example. The given values are the degree of reduction of electrical energy consumption from the grid and the use of installed power of the photovoltaic battery. The boundary modes of renewable energy sources generation are taken into account. The base is the calculated values of the average monthly generation of renewable energy sources and the dependency of distribution of energy of the photovoltaic battery for a month for five years according to the archival data. With a coefficient of installed power use close to 0.9, it is possible to have a ratio of the powers of a photovoltaic battery and a wind generator of 6.9:1 with an average value over 5 years of a decrease in consumption from the grid in December by 3.48 times. When generation is below the monthly average one, it is proposed to regulate the consumption of active power according to the forecast. This allows equalizing power consumption in the daytime with a reduction during peak hours. The formation of the SOC battery graph is carried out by taking into account the forecast for the next day. The modeling confirms the possibility of reducing the consumption of electricity from the grid from 2.5 times to the full exclusion of consumption.
{"title":"Variant of Implementation of a Grid-Tied Solar-Wind System with a Storage Battery for Self-Consumption of Local Object","authors":"Olexandr Shavolkin, I. Shvedchykova, M. Kolcun, Dušan Medved’","doi":"10.1109/ESS57819.2022.9969234","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969234","url":null,"abstract":"The purpose of the work is the improvement the technique of the parameter's choice and control of the solar-wind system. The calculation of the system parameters for the taken schedule of the load is considered in the example. The given values are the degree of reduction of electrical energy consumption from the grid and the use of installed power of the photovoltaic battery. The boundary modes of renewable energy sources generation are taken into account. The base is the calculated values of the average monthly generation of renewable energy sources and the dependency of distribution of energy of the photovoltaic battery for a month for five years according to the archival data. With a coefficient of installed power use close to 0.9, it is possible to have a ratio of the powers of a photovoltaic battery and a wind generator of 6.9:1 with an average value over 5 years of a decrease in consumption from the grid in December by 3.48 times. When generation is below the monthly average one, it is proposed to regulate the consumption of active power according to the forecast. This allows equalizing power consumption in the daytime with a reduction during peak hours. The formation of the SOC battery graph is carried out by taking into account the forecast for the next day. The modeling confirms the possibility of reducing the consumption of electricity from the grid from 2.5 times to the full exclusion of consumption.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"111 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":"115851393","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/ESS57819.2022.9969288
I. Blinov, V. Miroshnyk, V. Sychova
The urgency of the problem of short-term forecasting of electricity imbalances in the modern electricity market of Ukraine and the growing share of renewable energy sources in the balance of the IPS of Ukraine are substantiated. The article compares the results of forecasting daily schedules of electricity imbalances using autoregressive models ARIMA, SARIMA and combined model, taking into account the influence of forecasted values of solar and wind generation. The actual data of the balancing market and volumes of electricity supply from RES were used for the research. Analysis of the results shows that the SARIMA models and the combined model have more accurate results.
{"title":"Comparison of models for short-term forecasting of electricity imbalances","authors":"I. Blinov, V. Miroshnyk, V. Sychova","doi":"10.1109/ESS57819.2022.9969288","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969288","url":null,"abstract":"The urgency of the problem of short-term forecasting of electricity imbalances in the modern electricity market of Ukraine and the growing share of renewable energy sources in the balance of the IPS of Ukraine are substantiated. The article compares the results of forecasting daily schedules of electricity imbalances using autoregressive models ARIMA, SARIMA and combined model, taking into account the influence of forecasted values of solar and wind generation. The actual data of the balancing market and volumes of electricity supply from RES were used for the research. Analysis of the results shows that the SARIMA models and the combined model have more accurate results.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"7 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":"116844022","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/ESS57819.2022.9969337
O. Plakhtii, V. Nerubatskyi, D. Hordiienko
The implementation of the maximum power extraction function from solar panels is an important energy task, which can significantly increase the energy efficiency of solar energy. It is shown that the maximum power point that a solar panel can deliver depends on many parameters, such as current consumption, temperature, and illumination. In addition, solar panels have the property of degradation of the generated power over the years of operation. Thus, at a particular moment in time, the value of the maximum solar power can be obtained either by creating a complete multidimensional mathematical model and using temperature sensors, light sensors, and a timer for the operation of the solar panel from the moment of its production. The implementation of this function is possible by using pulsed semiconductor converters with pulse-width modulation by changing the duty cycle of pulse-width modulation from 0 to 1 and empirically determining the value of the maximum power that a solar panel can deliver and work at a given point while maintaining the required PWM duty cycle. Computer simulation was carried out, it confirmed the possibility of determining the point of maximum power by using a step-down pulse converter.
{"title":"Research of Operating Modes and Features of Integration of Renewable Energy Sources into the Electric Power System","authors":"O. Plakhtii, V. Nerubatskyi, D. Hordiienko","doi":"10.1109/ESS57819.2022.9969337","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969337","url":null,"abstract":"The implementation of the maximum power extraction function from solar panels is an important energy task, which can significantly increase the energy efficiency of solar energy. It is shown that the maximum power point that a solar panel can deliver depends on many parameters, such as current consumption, temperature, and illumination. In addition, solar panels have the property of degradation of the generated power over the years of operation. Thus, at a particular moment in time, the value of the maximum solar power can be obtained either by creating a complete multidimensional mathematical model and using temperature sensors, light sensors, and a timer for the operation of the solar panel from the moment of its production. The implementation of this function is possible by using pulsed semiconductor converters with pulse-width modulation by changing the duty cycle of pulse-width modulation from 0 to 1 and empirically determining the value of the maximum power that a solar panel can deliver and work at a given point while maintaining the required PWM duty cycle. Computer simulation was carried out, it confirmed the possibility of determining the point of maximum power by using a step-down pulse converter.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"130 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":"116960625","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/ESS57819.2022.9969320
B. Kuznetsov, I. Bovdui, T. Nikitina, V. Kolomiets, B. Kobylianskyi
The method of adjustment of a two-circuit system of the active shielding of the magnetic field generated by single-circuit overhead transmission lines with a triangular arrangement of wires based on experimental measurements space-time characteristics was developed. The problem of synthesis of two degree of freedom robust two circuit system of active shielding of initial magnetic field comes down to a decision of the multi-criteria two-player zero-sum antagonistic game. During the design of system spatial location coordinates of two shielding windings, the currents in the both shielding windings and the vector of parameters of regulators were determined. The vector of payoff game calculated based on Biot-Savart's law. The game decision calculated based on the stochastic particles multiswarm optimization algorithms. Computer simulation and field experimental research of two circuit system of active shielding of magnetic field, generated by overhead power lines with phase conductor's triangle arrangements are given. The possibility of initial magnetic field reducing to the sanitary standards level is shown.
{"title":"Adjustment of Two Circuits System of Active Shielding of the Magnetic Field Generated by Overhead Power Lines","authors":"B. Kuznetsov, I. Bovdui, T. Nikitina, V. Kolomiets, B. Kobylianskyi","doi":"10.1109/ESS57819.2022.9969320","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969320","url":null,"abstract":"The method of adjustment of a two-circuit system of the active shielding of the magnetic field generated by single-circuit overhead transmission lines with a triangular arrangement of wires based on experimental measurements space-time characteristics was developed. The problem of synthesis of two degree of freedom robust two circuit system of active shielding of initial magnetic field comes down to a decision of the multi-criteria two-player zero-sum antagonistic game. During the design of system spatial location coordinates of two shielding windings, the currents in the both shielding windings and the vector of parameters of regulators were determined. The vector of payoff game calculated based on Biot-Savart's law. The game decision calculated based on the stochastic particles multiswarm optimization algorithms. Computer simulation and field experimental research of two circuit system of active shielding of magnetic field, generated by overhead power lines with phase conductor's triangle arrangements are given. The possibility of initial magnetic field reducing to the sanitary standards level is shown.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"91 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":"114318659","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/ESS57819.2022.9969346
M. Valentina, Maliienko Andriy, Petrenko Vitaliy, Lutsenko Ivan
The article examines the potential and opportunities for the development of innovative power supply systems in the conditions of Ukraine. The peculiarities and prospects of the use of electric vehicles in electric networks as consumers-regulators are analyzed, the feasibility of implementing the Vehicle-to-Grid technology is substantiated. Templates for the introduction of decentralized sources of electric energy based on electric vehicles, provided that bidirectional charging stations are used, are proposed. It is shown that rational integration of electric vehicles in power grids allows decreasing existing level of active load that affords to increase the efficiency of power equipment use. The main obstacle to Vehicle-to-Grid technology use is the lack of regulatory documentation and approved legislative acts. In conclusion, noted the main problems and requirements for the creation of effective decentralized energy supply systems in Ukraine based on electric vehicles.
{"title":"Problems and concept of electric vehicles energy networks","authors":"M. Valentina, Maliienko Andriy, Petrenko Vitaliy, Lutsenko Ivan","doi":"10.1109/ESS57819.2022.9969346","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969346","url":null,"abstract":"The article examines the potential and opportunities for the development of innovative power supply systems in the conditions of Ukraine. The peculiarities and prospects of the use of electric vehicles in electric networks as consumers-regulators are analyzed, the feasibility of implementing the Vehicle-to-Grid technology is substantiated. Templates for the introduction of decentralized sources of electric energy based on electric vehicles, provided that bidirectional charging stations are used, are proposed. It is shown that rational integration of electric vehicles in power grids allows decreasing existing level of active load that affords to increase the efficiency of power equipment use. The main obstacle to Vehicle-to-Grid technology use is the lack of regulatory documentation and approved legislative acts. In conclusion, noted the main problems and requirements for the creation of effective decentralized energy supply systems in Ukraine based on electric vehicles.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"210 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":"126981621","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/ess57819.2022.9969283
{"title":"Section 4. Smart Industrial Applications and Consumers","authors":"","doi":"10.1109/ess57819.2022.9969283","DOIUrl":"https://doi.org/10.1109/ess57819.2022.9969283","url":null,"abstract":"","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"36 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":"122692877","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/ESS57819.2022.9969335
S. Golubieva, M. Morneva, Iryna Deuschle
This article is dedicated to the increase in the efficiency of actions aimed at decreasing the electric loss for a variety of reasons. Contemporary electric engines require the high quality of output parameter regulation to ensure the efficient functioning of system elements. This goal is complex, it depends on numerous factors. One suggests the main systems of controlling marine auxiliary drive elements. The article examines key parameters and operational factors for such control. While designing control systems, traditional proportional integral controllers are a reliable and proven method to control the required parameters. However, due to the development of the control theory, fuzzy logic algorithms also can be applied in a range of problems. To optimize the system, one offered to adopt the system with the fuzzy logic controller instead of the traditional proportional integral (PI) controller, as well as provided the schematic diagram of the hybrid electric drive control system.
{"title":"Increase in the efficiency of controlling marine electric engines by optimizing their control systems","authors":"S. Golubieva, M. Morneva, Iryna Deuschle","doi":"10.1109/ESS57819.2022.9969335","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969335","url":null,"abstract":"This article is dedicated to the increase in the efficiency of actions aimed at decreasing the electric loss for a variety of reasons. Contemporary electric engines require the high quality of output parameter regulation to ensure the efficient functioning of system elements. This goal is complex, it depends on numerous factors. One suggests the main systems of controlling marine auxiliary drive elements. The article examines key parameters and operational factors for such control. While designing control systems, traditional proportional integral controllers are a reliable and proven method to control the required parameters. However, due to the development of the control theory, fuzzy logic algorithms also can be applied in a range of problems. To optimize the system, one offered to adopt the system with the fuzzy logic controller instead of the traditional proportional integral (PI) controller, as well as provided the schematic diagram of the hybrid electric drive control system.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"57 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":"120947992","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/ESS57819.2022.9969336
E. Dzhyhun
Based on statistical data for 1996–2020, the influence of average annual fluctuations in air temperature and precipitation on the volume of electricity production by hydroelectric power plants in Ukraine is analyzed. During the period under investigation, a steady increase in air temperature is predicted. An analysis of model data was carried out to determine the general trends of climate change based on averaged, minimum and maximum climatic characteristics for the entire territory of Ukraine. For this, the average values of the forecasted series of data were obtained, which were averaged, as a result of which data sets were obtained, and the air temperature and precipitation averages for the seasons, year and decade of the 21st century were calculated from the monthly data. A forecast of average annual air temperatures and the corresponding amounts of electricity produced by HPPs for the period 2025–2050 is given.
{"title":"Study of the impact of climate change on the volume of electricity production at HPPs in Ukraine","authors":"E. Dzhyhun","doi":"10.1109/ESS57819.2022.9969336","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969336","url":null,"abstract":"Based on statistical data for 1996–2020, the influence of average annual fluctuations in air temperature and precipitation on the volume of electricity production by hydroelectric power plants in Ukraine is analyzed. During the period under investigation, a steady increase in air temperature is predicted. An analysis of model data was carried out to determine the general trends of climate change based on averaged, minimum and maximum climatic characteristics for the entire territory of Ukraine. For this, the average values of the forecasted series of data were obtained, which were averaged, as a result of which data sets were obtained, and the air temperature and precipitation averages for the seasons, year and decade of the 21st century were calculated from the monthly data. A forecast of average annual air temperatures and the corresponding amounts of electricity produced by HPPs for the period 2025–2050 is given.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"29 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":"130693148","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/ESS57819.2022.9969333
Vitalii Teriaiev, Anton Dovbyk, Vladyslav Korniienko
Linear induction motors (LIM) are becoming more popular in the industry and require in-depth research of the control methods that can be applied to development systems that use these motors. This article shows improved frequency control methods with IR-compensation, s-compensation and a combined algorithm. The proposed approach is based on the T-shaped equivalent circuit and takes into account the end effects, the increase of the active resistance of the LIM's due to heating, the low rigidity of the natural characteristics of the motor due to decisive influence of the active resistance. The listed factors lead to the deterioration of the static and dynamic characteristics of the linear electric drive, which requires the development of measures to compensate for their influence.
{"title":"Combined Algorithm of Improved Frequency Control of Linear Induction Motors","authors":"Vitalii Teriaiev, Anton Dovbyk, Vladyslav Korniienko","doi":"10.1109/ESS57819.2022.9969333","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969333","url":null,"abstract":"Linear induction motors (LIM) are becoming more popular in the industry and require in-depth research of the control methods that can be applied to development systems that use these motors. This article shows improved frequency control methods with IR-compensation, s-compensation and a combined algorithm. The proposed approach is based on the T-shaped equivalent circuit and takes into account the end effects, the increase of the active resistance of the LIM's due to heating, the low rigidity of the natural characteristics of the motor due to decisive influence of the active resistance. The listed factors lead to the deterioration of the static and dynamic characteristics of the linear electric drive, which requires the development of measures to compensate for their influence.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"254 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":"114607326","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/ESS57819.2022.9969274
Y. Trotsenko, V. Brzhezitsky, Y. Haran, A. Derzhuk, M. Dixit
For the first time, the ultimate effect of the non-identity of the resistive elements of the high-voltage arm of a broadband voltage divider containing parallel-series connections of resistive and capacitive elements is considered. It is shown that the amplitude-frequency characteristic of such a divider has an anomalous rise in the region of the dimensionless frequency parameter gamma~1. The amplitude of this rise is determined in the form of a dependence on the non-identity parameter beta of resistive elements. The materials of the paper can be used for an integral assessment of the quality of voltage dividers, as well as in the theory of high-voltage insulation.
{"title":"Ultimate Effect of Non-Identity of Resistive Elements of High-Voltage Arm on Amplitude-Frequency Characteristic of Voltage Divider (Numerical Results)","authors":"Y. Trotsenko, V. Brzhezitsky, Y. Haran, A. Derzhuk, M. Dixit","doi":"10.1109/ESS57819.2022.9969274","DOIUrl":"https://doi.org/10.1109/ESS57819.2022.9969274","url":null,"abstract":"For the first time, the ultimate effect of the non-identity of the resistive elements of the high-voltage arm of a broadband voltage divider containing parallel-series connections of resistive and capacitive elements is considered. It is shown that the amplitude-frequency characteristic of such a divider has an anomalous rise in the region of the dimensionless frequency parameter gamma~1. The amplitude of this rise is determined in the form of a dependence on the non-identity parameter beta of resistive elements. The materials of the paper can be used for an integral assessment of the quality of voltage dividers, as well as in the theory of high-voltage insulation.","PeriodicalId":432063,"journal":{"name":"2022 IEEE 8th International Conference on Energy Smart Systems (ESS)","volume":"9 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":"122264238","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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