Pub Date : 2010-11-09DOI: 10.1109/ICHQP.2010.5625444
M. Brenna, E. De Berardinis, Luca Delli Carpini, P. Paulon, P. Petroni, G. Sapienza, G. Scrosati, D. Zaninelli
The widespread of the Distributed Generation (DG) impacts the future development of modern electrical distribution systems that must to evolve towards Smart Grids. Fundamental topics of the Smart Grid context are the Distributed Voltage Automation and the Advanced Network Automation based on fast communication channels. In order to analyze the behavior of a network which evolves in Smart Grid, real time digital simulation, using a closed loop system, is an indispensable approach because allow to study normal and critical situations that can happen in the grid. Besides the interaction with real devices can be performed, in order to verify their correct operation. In this paper, after a general description of the real time simulation in the Smart Grid context, the behavior analysis of an interface protection device is performed using the Real Time Digital Simulator (RTDS) installed in the Enel Distribuzione S.p.A. test centre.
{"title":"Real time simulation of Smart Grids for interface protection test and analysis","authors":"M. Brenna, E. De Berardinis, Luca Delli Carpini, P. Paulon, P. Petroni, G. Sapienza, G. Scrosati, D. Zaninelli","doi":"10.1109/ICHQP.2010.5625444","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625444","url":null,"abstract":"The widespread of the Distributed Generation (DG) impacts the future development of modern electrical distribution systems that must to evolve towards Smart Grids. Fundamental topics of the Smart Grid context are the Distributed Voltage Automation and the Advanced Network Automation based on fast communication channels. In order to analyze the behavior of a network which evolves in Smart Grid, real time digital simulation, using a closed loop system, is an indispensable approach because allow to study normal and critical situations that can happen in the grid. Besides the interaction with real devices can be performed, in order to verify their correct operation. In this paper, after a general description of the real time simulation in the Smart Grid context, the behavior analysis of an interface protection device is performed using the Real Time Digital Simulator (RTDS) installed in the Enel Distribuzione S.p.A. test centre.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"407 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122899711","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625502
R. Chiumeo, M. de Nigris, C. Gandolfi, L. Garbero, L. Tenti
In 2005 the Italian Regulatory Authority for Electricity and Gas (Autorità per l'Energia Elettrica e il Gas, AEEG) promoted a Power Quality (PQ) monitoring campaign carried out by means of the Italian MV power quality monitoring system named QuEEN realized by ERSE, in the framework of the Research Fund for the Italian Electrical System. Right from the start the main objectives of the campaign were to provide a sound knowledge of the actual performance of MV distribution networks in terms of PQ parameters and to give a useful support to Standardization and Regulation activities. The paper is focused on possible site and system indices suitable to characterize the MV network voltage dip performance at both national and macro area level. The proposed indices have been evaluated on the base of the QuEEN data collected up to now and their trends will be used to investigate about possible regulatory strategies.
2005年，在意大利电力系统研究基金的框架内，意大利电力和天然气监管局(autoritoper l'Energia electrica e il Gas, AEEG)推动了一项电能质量(PQ)监测活动，该活动通过由ERSE实现的名为QuEEN的意大利中压电能质量监测系统进行。从一开始，该活动的主要目标就是提供有关中压配电网络在PQ参数方面的实际性能的良好知识，并为标准化和监管活动提供有用的支持。本文的重点是在国家和宏观区域层面上寻找适合表征中压网络电压跌落性能的可能的站点和系统指标。根据迄今为止收集的QuEEN数据对拟议的指数进行了评估，其趋势将用于调查可能的监管策略。
{"title":"Voltage dips performance characterization by PQ indices at national and macro area level","authors":"R. Chiumeo, M. de Nigris, C. Gandolfi, L. Garbero, L. Tenti","doi":"10.1109/ICHQP.2010.5625502","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625502","url":null,"abstract":"In 2005 the Italian Regulatory Authority for Electricity and Gas (Autorità per l'Energia Elettrica e il Gas, AEEG) promoted a Power Quality (PQ) monitoring campaign carried out by means of the Italian MV power quality monitoring system named QuEEN realized by ERSE, in the framework of the Research Fund for the Italian Electrical System. Right from the start the main objectives of the campaign were to provide a sound knowledge of the actual performance of MV distribution networks in terms of PQ parameters and to give a useful support to Standardization and Regulation activities. The paper is focused on possible site and system indices suitable to characterize the MV network voltage dip performance at both national and macro area level. The proposed indices have been evaluated on the base of the QuEEN data collected up to now and their trends will be used to investigate about possible regulatory strategies.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114806344","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625497
V. Barrera Nunez, S. Kulkarni, S. Santoso, J. Meléndez
This paper proposes the application of support vector machines (SVM) to classify overhead distribution faults according to their general root causes; they are faults due to animal contacts, tree contacts, and lightning-induced events. The SVM method uses unique features buried in voltage and/or current waveforms. Seven unique features based on time and electrical quantities are presented. The performance of support vector machines with different kernels is compared to that of a rule-based classification method. The training and classification results demonstrate that SVM-based approach performs better than the rule-based approach. For instance, SVM-based approach correctly classifies 119 out of 148 collected voltage events, whereas rule-based approach 88 out of them. Likewise, a good generalization performance of the SVM-based approach is demonstrated during the training process carried out. However, the drawback of such a classifier based on SVM, and other blackbox methods, is due to the difficulties to interpret decision criteria.
{"title":"SVM-based classification methodology for overhead distribution fault events","authors":"V. Barrera Nunez, S. Kulkarni, S. Santoso, J. Meléndez","doi":"10.1109/ICHQP.2010.5625497","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625497","url":null,"abstract":"This paper proposes the application of support vector machines (SVM) to classify overhead distribution faults according to their general root causes; they are faults due to animal contacts, tree contacts, and lightning-induced events. The SVM method uses unique features buried in voltage and/or current waveforms. Seven unique features based on time and electrical quantities are presented. The performance of support vector machines with different kernels is compared to that of a rule-based classification method. The training and classification results demonstrate that SVM-based approach performs better than the rule-based approach. For instance, SVM-based approach correctly classifies 119 out of 148 collected voltage events, whereas rule-based approach 88 out of them. Likewise, a good generalization performance of the SVM-based approach is demonstrated during the training process carried out. However, the drawback of such a classifier based on SVM, and other blackbox methods, is due to the difficulties to interpret decision criteria.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123973524","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625318
F. Salim, K. M. Nor
The concern towards voltage sag has increased rapidly due to the amount of losses it created. Throughout the world, many researchers have proposed a study on the characteristics and the mitigation methods which may be used to overcome or reduce the effect cause by the voltage sag. In this paper, a method that used a minimum number of power quality monitors has been proposed to monitor the occurrence of voltage sags in the utility system. By using the area of vulnerability concept, the optimal monitor locations with zero blind spot area can be determined. The proposed method also used the concept of monitor redundancy to ensure the correctness of the monitor reading, validation purposes and to ensure the reliability of the monitoring system is 100%. The proposed method has been tested with two standards system; IEEE 30-bus system and IEEE 300-bus system and the results then is compared with other monitoring method.
{"title":"Voltage sags observation through optimal monitor locations","authors":"F. Salim, K. M. Nor","doi":"10.1109/ICHQP.2010.5625318","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625318","url":null,"abstract":"The concern towards voltage sag has increased rapidly due to the amount of losses it created. Throughout the world, many researchers have proposed a study on the characteristics and the mitigation methods which may be used to overcome or reduce the effect cause by the voltage sag. In this paper, a method that used a minimum number of power quality monitors has been proposed to monitor the occurrence of voltage sags in the utility system. By using the area of vulnerability concept, the optimal monitor locations with zero blind spot area can be determined. The proposed method also used the concept of monitor redundancy to ensure the correctness of the monitor reading, validation purposes and to ensure the reliability of the monitoring system is 100%. The proposed method has been tested with two standards system; IEEE 30-bus system and IEEE 300-bus system and the results then is compared with other monitoring method.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117013403","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625369
S. Nakhaee, A. Jalilian
Power quality improvement has been achieved using a 24 pulse autotransformer based ac-dc converter. The idea is to use an autotransformer based 12-pulse ac-dc converter and incorporating pulse doubling method for improving power quality ac mains for feeding a direct torque controlled induction motor drive (DTCIMD) load. The scheme uses a star connected autotransformer to produce 12-pulses with flexibility to adjust its voltage ratio which makes it suitable for retrofit application where a 6-pulse diode bridge rectifier is being used. Using the proposed 24-pulse AC-DC convertor, harmonic currents up to 21st order has been eliminated in the AC mains currents. A set of power quality indices on input AC mains for the proposed ac-dc converter feeding DTCIMD are also presented to compare its performance with 6-pulse and 12 pulse ac-dc converters. Also the effect of load variation on DTCIMD fed 24-pulse ac-dc converter is studied to demonstrate the effectiveness of the proposed ac-dc converter.
{"title":"Application of pulse multiplication in autotransformer based AC-DC converters for direct torque control induction motor drives","authors":"S. Nakhaee, A. Jalilian","doi":"10.1109/ICHQP.2010.5625369","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625369","url":null,"abstract":"Power quality improvement has been achieved using a 24 pulse autotransformer based ac-dc converter. The idea is to use an autotransformer based 12-pulse ac-dc converter and incorporating pulse doubling method for improving power quality ac mains for feeding a direct torque controlled induction motor drive (DTCIMD) load. The scheme uses a star connected autotransformer to produce 12-pulses with flexibility to adjust its voltage ratio which makes it suitable for retrofit application where a 6-pulse diode bridge rectifier is being used. Using the proposed 24-pulse AC-DC convertor, harmonic currents up to 21st order has been eliminated in the AC mains currents. A set of power quality indices on input AC mains for the proposed ac-dc converter feeding DTCIMD are also presented to compare its performance with 6-pulse and 12 pulse ac-dc converters. Also the effect of load variation on DTCIMD fed 24-pulse ac-dc converter is studied to demonstrate the effectiveness of the proposed ac-dc converter.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129564246","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625371
M. Szmajda, K. Górecki, J. Mroczka
The measurement algorithms applied in power quality measurement systems are based on Fourier Transformation (FT). The discrete versions of Fourier transformation - DFT (Discrete FT) and FFT (Fast Fourier Transformation) are most commonly used. That one-dimension frequency analysis is sufficient in many cases. However, to illustrate the character of the signal in a more comprehensive manner, it is crucial to represent the investigated signal on time-frequency plane. There are a lot of time-frequency representations (TFR) for presenting measured signal. The most common known are spectrogram (SPEC) and Gabor Transform (GT), which are based on direct DFT results. However, the method has relatively low time-frequency resolution. The other TFR representing Cohen class: Wigner-Ville Distribution (WVD) and its variants: Pseudo Wigner-Ville Distribution (PWVD), Smoothed Pseudo Wigner-Ville Distribution (SPWVD) and Gabor-Wigner Transform (GWT) are described in the paper. The main features of the transforms, on the basis of testing signals, were presented.
{"title":"Gabor Transform, Gabor-Wigner Transform and SPWVD as a time-frequency analysis of power quality","authors":"M. Szmajda, K. Górecki, J. Mroczka","doi":"10.1109/ICHQP.2010.5625371","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625371","url":null,"abstract":"The measurement algorithms applied in power quality measurement systems are based on Fourier Transformation (FT). The discrete versions of Fourier transformation - DFT (Discrete FT) and FFT (Fast Fourier Transformation) are most commonly used. That one-dimension frequency analysis is sufficient in many cases. However, to illustrate the character of the signal in a more comprehensive manner, it is crucial to represent the investigated signal on time-frequency plane. There are a lot of time-frequency representations (TFR) for presenting measured signal. The most common known are spectrogram (SPEC) and Gabor Transform (GT), which are based on direct DFT results. However, the method has relatively low time-frequency resolution. The other TFR representing Cohen class: Wigner-Ville Distribution (WVD) and its variants: Pseudo Wigner-Ville Distribution (PWVD), Smoothed Pseudo Wigner-Ville Distribution (SPWVD) and Gabor-Wigner Transform (GWT) are described in the paper. The main features of the transforms, on the basis of testing signals, were presented.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128857688","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625507
O. Murillo, A. Blanco, L. Gallego
Long and short time voltage variations are common electromagnetic phenomena that affect the power quality. According to Colombian resolution CREG 024 of 2005, utilities must register for each system busbar and every 10 minutes, PST values per phase, negative sequence unbalance factor V2/V1, number and duration of the long and short-time voltage variations, number and duration of interruptions involved. In this paper, we present the first results of a proposed new method to find the impact of long and short-time voltage variations on the PST and negative sequence unbalance factor indicators, according to colombian regulations and using real feeders measurements, the proposed method uses basic elements of clustering and data mining.
{"title":"Impact of long and short-time voltage variations on the PST and voltage unbalance indicators","authors":"O. Murillo, A. Blanco, L. Gallego","doi":"10.1109/ICHQP.2010.5625507","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625507","url":null,"abstract":"Long and short time voltage variations are common electromagnetic phenomena that affect the power quality. According to Colombian resolution CREG 024 of 2005, utilities must register for each system busbar and every 10 minutes, PST values per phase, negative sequence unbalance factor V2/V1, number and duration of the long and short-time voltage variations, number and duration of interruptions involved. In this paper, we present the first results of a proposed new method to find the impact of long and short-time voltage variations on the PST and negative sequence unbalance factor indicators, according to colombian regulations and using real feeders measurements, the proposed method uses basic elements of clustering and data mining.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129206561","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625438
J. Orillaza, A. Wood
This paper presents a harmonic state-space model of a three-phase thyristor controlled reactor. In this description, both the transient and steady-state response of individual harmonics are quantified. The results were validated using a strictly time-domain simulation. A further development of the model is the use of characteristic harmonics of the power converter to reduce the number of harmonics incorporated into state-space equations; this development effectively reduces computational burden.
{"title":"Reduced harmonic state space model of TCR","authors":"J. Orillaza, A. Wood","doi":"10.1109/ICHQP.2010.5625438","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625438","url":null,"abstract":"This paper presents a harmonic state-space model of a three-phase thyristor controlled reactor. In this description, both the transient and steady-state response of individual harmonics are quantified. The results were validated using a strictly time-domain simulation. A further development of the model is the use of characteristic harmonics of the power converter to reduce the number of harmonics incorporated into state-space equations; this development effectively reduces computational burden.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116984987","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625381
F. Della Torre, A. Morando, G. Sapienza
Preliminary recalling the idea of generalized sinusoid, fundamental concepts of cisoidal algebra are then exposed. The approach is regarded as a generalization of the classic phasors analysis and it is proposed for the analysis of circuits and electromagnetic fields in damped steady state conditions. In this way is possible to reformulate the energetic balance by means of the concept of contra-rotating generalized vectors, obtaining a possible unified expression for the balance itself.
{"title":"Cisoidal algebra: Some meanings for a unified energetic balance","authors":"F. Della Torre, A. Morando, G. Sapienza","doi":"10.1109/ICHQP.2010.5625381","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625381","url":null,"abstract":"Preliminary recalling the idea of generalized sinusoid, fundamental concepts of cisoidal algebra are then exposed. The approach is regarded as a generalization of the classic phasors analysis and it is proposed for the analysis of circuits and electromagnetic fields in damped steady state conditions. In this way is possible to reformulate the energetic balance by means of the concept of contra-rotating generalized vectors, obtaining a possible unified expression for the balance itself.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116270057","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 : 2010-11-09DOI: 10.1109/ICHQP.2010.5625491
C. Almeida, N. Kagan
This paper verifies the importance of load modeling for the harmonic assessment of power systems. Three different models are discussed, and the impact of each approach on the harmonic evaluation of power networks is highlighted.
{"title":"Harmonic coupled norton equivalent model for modeling harmonic-producing loads","authors":"C. Almeida, N. Kagan","doi":"10.1109/ICHQP.2010.5625491","DOIUrl":"https://doi.org/10.1109/ICHQP.2010.5625491","url":null,"abstract":"This paper verifies the importance of load modeling for the harmonic assessment of power systems. Three different models are discussed, and the impact of each approach on the harmonic evaluation of power networks is highlighted.","PeriodicalId":180078,"journal":{"name":"Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126940135","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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