Pub Date : 2015-10-01DOI: 10.1109/EPEC.2015.7379983
Sami M. Alshareef, W. Morsi
This paper presents an application of discrete wavelet and ensemble decision tree classifier to the non-intrusive load monitoring (NILM). The effect of different order of Daubechies wavelet filter on the classification accuracy is investigated. Also the paper studies the effect of increasing the number of decision trees contained in the ensemble on the performance of the classifier by measuring the training and testing classification accuracies. The results have shown that the use of third order Daubechies wavelet filter can lead to highest classification accuracy compared other order of Daubechies filters. The results also have shown that when increasing the number of decision trees in the ensemble classifier can have significant effect on improving the classification accuracy in NILM.
{"title":"Application of wavelet-based ensemble tree classifier for non-intrusive load monitoring","authors":"Sami M. Alshareef, W. Morsi","doi":"10.1109/EPEC.2015.7379983","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379983","url":null,"abstract":"This paper presents an application of discrete wavelet and ensemble decision tree classifier to the non-intrusive load monitoring (NILM). The effect of different order of Daubechies wavelet filter on the classification accuracy is investigated. Also the paper studies the effect of increasing the number of decision trees contained in the ensemble on the performance of the classifier by measuring the training and testing classification accuracies. The results have shown that the use of third order Daubechies wavelet filter can lead to highest classification accuracy compared other order of Daubechies filters. The results also have shown that when increasing the number of decision trees in the ensemble classifier can have significant effect on improving the classification accuracy in NILM.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125501310","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379951
Kings Wong
In many power transmission utility companies in North America, there is a large number of transmission circuits that are approaching their physical end-of-life and will require their outright replacement within the next five to ten years. With limited available resources, power utility companies need to be able to properly prioritize their re-investments into an aging network.[1] This paper discusses, the complexities involved in the financial valuation of existing transmission line assets and in particular, summarizes the various methods that are used for determining the financial benefits or costs associated with the particular transmission line asset renewal project. The financial valuation of the transmission line asset and asset renewal projects are essential part of the process to prioritize reinvestments into the ageing transmission infrastructure.
{"title":"A discussion of the financial valuation of transmission line assets and asset renewal projects","authors":"Kings Wong","doi":"10.1109/EPEC.2015.7379951","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379951","url":null,"abstract":"In many power transmission utility companies in North America, there is a large number of transmission circuits that are approaching their physical end-of-life and will require their outright replacement within the next five to ten years. With limited available resources, power utility companies need to be able to properly prioritize their re-investments into an aging network.[1] This paper discusses, the complexities involved in the financial valuation of existing transmission line assets and in particular, summarizes the various methods that are used for determining the financial benefits or costs associated with the particular transmission line asset renewal project. The financial valuation of the transmission line asset and asset renewal projects are essential part of the process to prioritize reinvestments into the ageing transmission infrastructure.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126668342","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379941
R. Varma, A. Hameed, Shams Al Hmaidi, Syed Mir, Sibin Mohan
Network resonances typically result from the interaction between the inductive and capacitive elements in the grid. This paper presents a case study where network resonances coupled with harmonic current injections can cause substantial overvoltages which can potentially lead to misoperation or failure of residential smart meters. A mitigation technique is designed to decrease this adverse harmonic impact. It is shown that the placement of a filter near the harmonic current source can successfully reduce the impact of harmonics. This study demonstrates that harmonic amplification could become a potential cause of smart meter failures, and therefore such network resonance studies must be performed by utilities to eliminate one possible cause of smart meter failures that have recently been reported in utilities.
{"title":"Adverse harmonic impact of network resonances on smart meters","authors":"R. Varma, A. Hameed, Shams Al Hmaidi, Syed Mir, Sibin Mohan","doi":"10.1109/EPEC.2015.7379941","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379941","url":null,"abstract":"Network resonances typically result from the interaction between the inductive and capacitive elements in the grid. This paper presents a case study where network resonances coupled with harmonic current injections can cause substantial overvoltages which can potentially lead to misoperation or failure of residential smart meters. A mitigation technique is designed to decrease this adverse harmonic impact. It is shown that the placement of a filter near the harmonic current source can successfully reduce the impact of harmonics. This study demonstrates that harmonic amplification could become a potential cause of smart meter failures, and therefore such network resonance studies must be performed by utilities to eliminate one possible cause of smart meter failures that have recently been reported in utilities.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131320290","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379962
C. Cardozo, L. Capely, P. Dessante
The increasing photovoltaic generation (PV) in a small and isolated power system often has a negative impact on the primary frequency response. A previous work has shown, by means of a statistical analysis, that the risk of Under Frequency Load Shedding (UFLS), following a unit outage, increases as the PV installed capacity rises. In this work, a similar approach is used to quantify the potential benefits of including an additional resource, such as a centralized storage system, to contribute to the primary frequency regulation. The methodology is based on the sequential simulation of one year day-ahead scheduling, followed by a contingency analysis. It is observed that the reallocation of the primary reserve can improve the economic performance of the dispatch and increase the system's PV integration capabilities. However, this might further reduce the system inertia. Hence, to effectively limit the UFLS risk, the requirement on the dynamic of the primary reserve deployment must be reviewed.
{"title":"Increasing the integration capabilities of photovoltaic generation in a small and isolated power system","authors":"C. Cardozo, L. Capely, P. Dessante","doi":"10.1109/EPEC.2015.7379962","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379962","url":null,"abstract":"The increasing photovoltaic generation (PV) in a small and isolated power system often has a negative impact on the primary frequency response. A previous work has shown, by means of a statistical analysis, that the risk of Under Frequency Load Shedding (UFLS), following a unit outage, increases as the PV installed capacity rises. In this work, a similar approach is used to quantify the potential benefits of including an additional resource, such as a centralized storage system, to contribute to the primary frequency regulation. The methodology is based on the sequential simulation of one year day-ahead scheduling, followed by a contingency analysis. It is observed that the reallocation of the primary reserve can improve the economic performance of the dispatch and increase the system's PV integration capabilities. However, this might further reduce the system inertia. Hence, to effectively limit the UFLS risk, the requirement on the dynamic of the primary reserve deployment must be reviewed.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129548118","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379988
Emammer Shafter, Abdulfattah Noorwali, R. Rao
Smart grid can be thought of as a network of interconnected wireless networks. In such a network, critical reports generated at the customer sites are required to be communicated to a control station through several layers of wireless networks. Communication in these sub-networks is typically achieved using IEEE 802.11 technology that uses Orthogonal Frequency Division Multiplexing (OFDM). Conventionally, in an OFDM system BPSK, QPSK and QAM mappers are used. In this paper, Continuous Phase Modulation (CPM) mapper in an OFDM system is proposed: i) to enhance the physical layer reliability through the introduction of correlation among the transmitted OFDM symbols; and ii) to reduce the Peak-to-Average Power Ratio (PAPR) of transmitted OFDM symbols. The objective, over here is to examine the PAPR performance of OFDM systems with CPM mappers with and without Selective Mapping (SLM) technique. Simulations show that CPM mapper in OFDM systems can provide better PAPR performance compared to conventional mappers used in the existing IEEE 802.11 standards. It is noted that CPM mapper in OFDM is very effective in reducing PAPR and can be easily adopted in 802.11 standards for wireless network communications in smart grid.
{"title":"OFDM systems with CPM mappers for smart grid applications","authors":"Emammer Shafter, Abdulfattah Noorwali, R. Rao","doi":"10.1109/EPEC.2015.7379988","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379988","url":null,"abstract":"Smart grid can be thought of as a network of interconnected wireless networks. In such a network, critical reports generated at the customer sites are required to be communicated to a control station through several layers of wireless networks. Communication in these sub-networks is typically achieved using IEEE 802.11 technology that uses Orthogonal Frequency Division Multiplexing (OFDM). Conventionally, in an OFDM system BPSK, QPSK and QAM mappers are used. In this paper, Continuous Phase Modulation (CPM) mapper in an OFDM system is proposed: i) to enhance the physical layer reliability through the introduction of correlation among the transmitted OFDM symbols; and ii) to reduce the Peak-to-Average Power Ratio (PAPR) of transmitted OFDM symbols. The objective, over here is to examine the PAPR performance of OFDM systems with CPM mappers with and without Selective Mapping (SLM) technique. Simulations show that CPM mapper in OFDM systems can provide better PAPR performance compared to conventional mappers used in the existing IEEE 802.11 standards. It is noted that CPM mapper in OFDM is very effective in reducing PAPR and can be easily adopted in 802.11 standards for wireless network communications in smart grid.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130978818","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379922
S. Abdelsamad, W. Morsi, T. Sidhu
In this paper, the impact of plug-in electric vehicles charging on the electric power distribution system in the presence of single-phase rooftop solar photovoltaic (PV) is investigated. Monte Carlo methods are used to address the uncertainties resulting from solar irradiance and temperature in case of solar photovoltaic and PEVs charging demand. Twenty scenarios of different penetration levels of PVs and PEVs are studied in this work and simulated on the IEEE 123 bus radial power distribution system. The results of Monte Carlo simulations have shown that the increased use of PVs may significantly reduce the overload on distribution transformers resulting from PEVs charging, but it has no effect on the unbalance in distribution transformers resulting from PEV charging.
{"title":"On the impact of transportation electrification on distribution systems in the presence of rooftop solar photovoltaic","authors":"S. Abdelsamad, W. Morsi, T. Sidhu","doi":"10.1109/EPEC.2015.7379922","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379922","url":null,"abstract":"In this paper, the impact of plug-in electric vehicles charging on the electric power distribution system in the presence of single-phase rooftop solar photovoltaic (PV) is investigated. Monte Carlo methods are used to address the uncertainties resulting from solar irradiance and temperature in case of solar photovoltaic and PEVs charging demand. Twenty scenarios of different penetration levels of PVs and PEVs are studied in this work and simulated on the IEEE 123 bus radial power distribution system. The results of Monte Carlo simulations have shown that the increased use of PVs may significantly reduce the overload on distribution transformers resulting from PEVs charging, but it has no effect on the unbalance in distribution transformers resulting from PEV charging.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115758961","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379996
V. Pupkevich, D. Karamanev
The BioGenerator is the world's first biological converter of hydrogen to electricity. Its characteristics such as high electrical efficiency, high stability, scalability and low cost make it very useful for the re-electrification in the hydrogen-based energy storage systems. Here we are reporting the results of the experimental study of a 300 Watt BioGenerator. We studied the effect of temperature, acidity and the catolyte flow rate on the performance of the BioGenerator. A high stability with respect to these parameters was obtained.
{"title":"BioGenerator - effect of physicochemical parameters on performance","authors":"V. Pupkevich, D. Karamanev","doi":"10.1109/EPEC.2015.7379996","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379996","url":null,"abstract":"The BioGenerator is the world's first biological converter of hydrogen to electricity. Its characteristics such as high electrical efficiency, high stability, scalability and low cost make it very useful for the re-electrification in the hydrogen-based energy storage systems. Here we are reporting the results of the experimental study of a 300 Watt BioGenerator. We studied the effect of temperature, acidity and the catolyte flow rate on the performance of the BioGenerator. A high stability with respect to these parameters was obtained.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124878347","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379969
Makanga Koumba Paul, M. Doumbia, A. Chériti
This paper presents study of a Wind Energy Conversion System (WECS) based on asynchronous machine connected to a power grid through a back to back converter. The power output of a WECS fluctuates with the wind velocity, which makes it difficult to analyze and control. The control objectives of generator side converter (GSC) are to optimize the energy capture from the wind turbine. The grid connected converter delivering the energy from the machine side to the utility grid regulated the DC link voltage and the power flows to the grid. We develop an approach to control the electrical and mechanical variables. This approach is based on the PI control of DC link voltage, pitch control of the wind turbine and a hysteresis control for the grid side converter. The effects of a voltage dip on different variables of the network are analyzed and the system's performance is presented. The complete control system has been analyzed and validated by Matlab simulation.
{"title":"Modeling and control of induction generator applied to variable speed Wind Energy Systems Conversion","authors":"Makanga Koumba Paul, M. Doumbia, A. Chériti","doi":"10.1109/EPEC.2015.7379969","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379969","url":null,"abstract":"This paper presents study of a Wind Energy Conversion System (WECS) based on asynchronous machine connected to a power grid through a back to back converter. The power output of a WECS fluctuates with the wind velocity, which makes it difficult to analyze and control. The control objectives of generator side converter (GSC) are to optimize the energy capture from the wind turbine. The grid connected converter delivering the energy from the machine side to the utility grid regulated the DC link voltage and the power flows to the grid. We develop an approach to control the electrical and mechanical variables. This approach is based on the PI control of DC link voltage, pitch control of the wind turbine and a hysteresis control for the grid side converter. The effects of a voltage dip on different variables of the network are analyzed and the system's performance is presented. The complete control system has been analyzed and validated by Matlab simulation.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127195862","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379958
D. Bouskela, Thuy Nguyen, A. Jardin
Verifying that complex systems such as power plants satisfy the requirements that ensure their proper operation, in particular with respect to safety, dependability and environmental regulations, is difficult due to the large number of potential situations to be explored in terms of initiating events and their chain of consequences on the behavior of the system. The paper presents a new framework for supporting a methodology that aims at reconciling innovation (ability to modify the system) and safety (ability to comply with regulatory requirements). The general principle is to produce independently formal models of the requirements, of the possible variants of the design, and of the dynamic behavior of the system for the possible designs, then assemble them together to simulate the full system's behavior to automatically detect possible violations of the requirements.
{"title":"Towards a rigorous approach for verifying cyber-physical systems against requirements","authors":"D. Bouskela, Thuy Nguyen, A. Jardin","doi":"10.1109/EPEC.2015.7379958","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379958","url":null,"abstract":"Verifying that complex systems such as power plants satisfy the requirements that ensure their proper operation, in particular with respect to safety, dependability and environmental regulations, is difficult due to the large number of potential situations to be explored in terms of initiating events and their chain of consequences on the behavior of the system. The paper presents a new framework for supporting a methodology that aims at reconciling innovation (ability to modify the system) and safety (ability to comply with regulatory requirements). The general principle is to produce independently formal models of the requirements, of the possible variants of the design, and of the dynamic behavior of the system for the possible designs, then assemble them together to simulate the full system's behavior to automatically detect possible violations of the requirements.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"47 13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127574172","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 : 2015-10-01DOI: 10.1109/EPEC.2015.7379947
N. Sahoo, S. Mohapatro, M. Senapati
In this paper, two control algorithms for maintaining constant DC bus voltage under wide variations in generation and loading conditions in a DC micro-grid are discussed. They are: the traditional voltage based control and a modified voltage plus SoC (state-of-charge)-based control. The DC micro-grid consists of a photovoltaic (PV) system, a wind energy system based on permanent magnet synchronous generator (PMSG), a fuel cell system, an energy storage system (battery), an electrolyzer as a dump load, and DC loads. It has been observed that the voltage plus state of charge (SOC) based control method gives better performance than the traditional voltage based control method in terms of effective maintenance of constant DC bus voltage as well as power balance of the power management system (PMS). The control strategies for the battery, fuel cell, electrolyzer, PV system and wind energy systems are also discussed. The complete DC micro-grid and all the associated control algorithms are simulated and evaluated using MATLAB/SIMULINK.
{"title":"A SoC based voltage control strategy for DC microgrid","authors":"N. Sahoo, S. Mohapatro, M. Senapati","doi":"10.1109/EPEC.2015.7379947","DOIUrl":"https://doi.org/10.1109/EPEC.2015.7379947","url":null,"abstract":"In this paper, two control algorithms for maintaining constant DC bus voltage under wide variations in generation and loading conditions in a DC micro-grid are discussed. They are: the traditional voltage based control and a modified voltage plus SoC (state-of-charge)-based control. The DC micro-grid consists of a photovoltaic (PV) system, a wind energy system based on permanent magnet synchronous generator (PMSG), a fuel cell system, an energy storage system (battery), an electrolyzer as a dump load, and DC loads. It has been observed that the voltage plus state of charge (SOC) based control method gives better performance than the traditional voltage based control method in terms of effective maintenance of constant DC bus voltage as well as power balance of the power management system (PMS). The control strategies for the battery, fuel cell, electrolyzer, PV system and wind energy systems are also discussed. The complete DC micro-grid and all the associated control algorithms are simulated and evaluated using MATLAB/SIMULINK.","PeriodicalId":231255,"journal":{"name":"2015 IEEE Electrical Power and Energy Conference (EPEC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127741250","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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