Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9113042
C. P. Reddy, R. Bhimasingu
This paper introduces a new fault location algorithm(FLA) for three-terminal transmission lines using positive sequence components of currents and voltages available at all three terminals. The proposed fault location algorithm simultaneously able to identify the faulted section and hence estimates the location of the fault. For various fault types and fault resistance values, simulation tests have been carried using PSCAD for a 161kV power system network. And later the algorithm is implemented in MATLAB. The proposed algorithm is tested for estimation of the fault location for different fault types with various fault resistances. It can be observed from the results,that for 99% of the cases tested, the % error is less than 1%.
{"title":"Fault Location Algorithm For Three Terminal Homogeneous Transmission Lines Using Positive Sequence Components","authors":"C. P. Reddy, R. Bhimasingu","doi":"10.1109/PIICON49524.2020.9113042","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9113042","url":null,"abstract":"This paper introduces a new fault location algorithm(FLA) for three-terminal transmission lines using positive sequence components of currents and voltages available at all three terminals. The proposed fault location algorithm simultaneously able to identify the faulted section and hence estimates the location of the fault. For various fault types and fault resistance values, simulation tests have been carried using PSCAD for a 161kV power system network. And later the algorithm is implemented in MATLAB. The proposed algorithm is tested for estimation of the fault location for different fault types with various fault resistances. It can be observed from the results,that for 99% of the cases tested, the % error is less than 1%.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130487972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9112964
T. Halder
The paper presents that significant effects and symptoms of the voltage and current harmonics of the single phase diode bridge rectifier have negative impacts in the power quality issues comprising on the uncertainties, pure sine wave deformations, critical symptoms and individual contributions of the various order of the harmonics. In this paper, a supportive performance parameters of the full bridge diode rectifier has been assessed by a Fourier series in a common platform and open source for the practical applications
{"title":"Effects & Symptoms of the Harmonics of the Diode Rectifier in the Power Quality Issues","authors":"T. Halder","doi":"10.1109/PIICON49524.2020.9112964","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9112964","url":null,"abstract":"The paper presents that significant effects and symptoms of the voltage and current harmonics of the single phase diode bridge rectifier have negative impacts in the power quality issues comprising on the uncertainties, pure sine wave deformations, critical symptoms and individual contributions of the various order of the harmonics. In this paper, a supportive performance parameters of the full bridge diode rectifier has been assessed by a Fourier series in a common platform and open source for the practical applications","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124420398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9112949
Ankita Arora, Alka Singh
In this paper a Biquad Filter called Universal Filter is designed for reducing power quality-based problems in power distribution systems. Increased use of solid-state power electronic based devices and loads requires shunt active power compensation techniques for mitigation. The Biquad Active Filter is a second order filter offering all four basic filters viz high pass, band pass, low pass, notch filter. In this paper bandpass and low pass filter are of prime importance as they are used for estimating the peak of the load current. It can be tuned by varying the quality factor and center frequency. The compensation technique is designed in MATLAB environment and its performance is experimentally verified using dSPACE- 1104.
{"title":"Design and Implementation of Biquad Filter for Shunt Compensation under Normal and Distorted Grid Conditions","authors":"Ankita Arora, Alka Singh","doi":"10.1109/PIICON49524.2020.9112949","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9112949","url":null,"abstract":"In this paper a Biquad Filter called Universal Filter is designed for reducing power quality-based problems in power distribution systems. Increased use of solid-state power electronic based devices and loads requires shunt active power compensation techniques for mitigation. The Biquad Active Filter is a second order filter offering all four basic filters viz high pass, band pass, low pass, notch filter. In this paper bandpass and low pass filter are of prime importance as they are used for estimating the peak of the load current. It can be tuned by varying the quality factor and center frequency. The compensation technique is designed in MATLAB environment and its performance is experimentally verified using dSPACE- 1104.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114185902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9113051
Sumedha Sharma, Ashu Verma, B. K. Panigrahi
This paper aims at development of the automated load control potential of buildings through control of heating, ventilation and air-conditioning (HVAC) system to provide ancillary services to the grid. The power consumption of HVAC is optimized in response to the reference signals while ensuring maximum thermal comfort. Accordingly, a coordinated control strategy is developed to control the HVAC power consumption and charging/discharging cycles of energy storage. By variation of the set temperature within a user defined bandwidth, the HVAC is controlled to provide ancillary service to the grid. Similarly, battery energy storage system is controlled to respond to ancillary service request during limited HVAC control owing to user comfort satisfaction. Results reveal that proposed strategy for power sharing and coordinated load control is able to robustly mitigate power mismatches.
{"title":"Ancillary Service Provision through HVAC Load Control in Building Clusters","authors":"Sumedha Sharma, Ashu Verma, B. K. Panigrahi","doi":"10.1109/PIICON49524.2020.9113051","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9113051","url":null,"abstract":"This paper aims at development of the automated load control potential of buildings through control of heating, ventilation and air-conditioning (HVAC) system to provide ancillary services to the grid. The power consumption of HVAC is optimized in response to the reference signals while ensuring maximum thermal comfort. Accordingly, a coordinated control strategy is developed to control the HVAC power consumption and charging/discharging cycles of energy storage. By variation of the set temperature within a user defined bandwidth, the HVAC is controlled to provide ancillary service to the grid. Similarly, battery energy storage system is controlled to respond to ancillary service request during limited HVAC control owing to user comfort satisfaction. Results reveal that proposed strategy for power sharing and coordinated load control is able to robustly mitigate power mismatches.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128943302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9112906
Abhishek Kumar, Seema, Bhim Singh, R. Jain
This paper proposes a HC-LMS (Hyperbolic Cosine function Least Mean Square) based control technique for a double stage grid-connected solar photovoltaic array (SPVA) system. This control technique has less oscillations and swift dynamic response. This HC-LMS control technique extracts the harmonics free fundamental load current component for the switching of DC-AC converter. Moreover, it addresses various PQ (Power Quality) problems like harmonics mitigation, grid currents balancing and reactive power compensation. For efficient operation of solar PV array, an IC (Incremental Conductance) based MPPT (Maximum Power Point Tracking) technique is used to achieve crest power. This HC-LMS control technique is tested under different dynamic conditions in the laboratory and test results show the satisfactory responses. The THDs (Total Harmonic Distortions) of grid currents are achieved well within the recommended limits.
{"title":"Double Stage Grid-Tied Solar PV System Using HC-LMS Control","authors":"Abhishek Kumar, Seema, Bhim Singh, R. Jain","doi":"10.1109/PIICON49524.2020.9112906","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9112906","url":null,"abstract":"This paper proposes a HC-LMS (Hyperbolic Cosine function Least Mean Square) based control technique for a double stage grid-connected solar photovoltaic array (SPVA) system. This control technique has less oscillations and swift dynamic response. This HC-LMS control technique extracts the harmonics free fundamental load current component for the switching of DC-AC converter. Moreover, it addresses various PQ (Power Quality) problems like harmonics mitigation, grid currents balancing and reactive power compensation. For efficient operation of solar PV array, an IC (Incremental Conductance) based MPPT (Maximum Power Point Tracking) technique is used to achieve crest power. This HC-LMS control technique is tested under different dynamic conditions in the laboratory and test results show the satisfactory responses. The THDs (Total Harmonic Distortions) of grid currents are achieved well within the recommended limits.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116916491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9112974
Jyotsna Singh, Rajive Tiwari
Increasing penetration of electric vehicles (EVs) in distribution system may result in increased losses and voltage drop in distribution system due to their charging load. However, EVs can also act as mobile energy and power resource to the grid. The concept is known as vehicle to grid (V2G) operation of EVs. EVs can dispatch real and reactive power to the grid through V2G provision to support the operation of distribution system. In this study, scheduling strategy of EVs is implemented considering real power dispatch and reactive power dispatch from the EVs. In addition, distribution system reconfiguration (DFR) is utilized to optimally coordinate the V2G provision available from EVs. The proposed optimization is solved using Grey wolf optimization (GWO). Constructive influence of DFR is evaluated on 69-bus radial distribution system with different cases. It is shown that DFR plays a significant role in enhancing the operation of distribution system integrated with EVs.
{"title":"Active and Reactive Power Management of EVs in Reconfigurable Distribution System","authors":"Jyotsna Singh, Rajive Tiwari","doi":"10.1109/PIICON49524.2020.9112974","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9112974","url":null,"abstract":"Increasing penetration of electric vehicles (EVs) in distribution system may result in increased losses and voltage drop in distribution system due to their charging load. However, EVs can also act as mobile energy and power resource to the grid. The concept is known as vehicle to grid (V2G) operation of EVs. EVs can dispatch real and reactive power to the grid through V2G provision to support the operation of distribution system. In this study, scheduling strategy of EVs is implemented considering real power dispatch and reactive power dispatch from the EVs. In addition, distribution system reconfiguration (DFR) is utilized to optimally coordinate the V2G provision available from EVs. The proposed optimization is solved using Grey wolf optimization (GWO). Constructive influence of DFR is evaluated on 69-bus radial distribution system with different cases. It is shown that DFR plays a significant role in enhancing the operation of distribution system integrated with EVs.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115543159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9112977
Hritik N Chavan, R. Wandhare
In this paper, a non-isolated dc-dc converter is proposed to provide a high voltage gain with a low inductance requirement. The circuit can be generalized for multiple stages to realize the desired DC output voltage from a low DC voltage source. In the proposed topology, the capacitors and inductors are charged/magnetized in parallel and discharged/demagnetized in series during switched on and off period respectively to obtain a high step-up voltage gain. The proposed power circuit is suitable for many applications based on renewable energy and energy storage where the desired DC-link voltage requirement can be as high as 560V (three-phase inverter input), and input voltage can be as low as 48V (a string of four batteries or fuel cell). A detailed analysis of the steady-state operation of the power converter is provided in this paper to obtain the voltage gain of the converter. The circuit design is simulated in MATLAB Simulink to verify the results of the analysis of this converter. Further, the design guidelines are provided for the generalized form of the converter to achieve desired steady-state input-output gain.
{"title":"High Voltage Gain DC-DC Non-Isolated Converter with Generalized Stages","authors":"Hritik N Chavan, R. Wandhare","doi":"10.1109/PIICON49524.2020.9112977","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9112977","url":null,"abstract":"In this paper, a non-isolated dc-dc converter is proposed to provide a high voltage gain with a low inductance requirement. The circuit can be generalized for multiple stages to realize the desired DC output voltage from a low DC voltage source. In the proposed topology, the capacitors and inductors are charged/magnetized in parallel and discharged/demagnetized in series during switched on and off period respectively to obtain a high step-up voltage gain. The proposed power circuit is suitable for many applications based on renewable energy and energy storage where the desired DC-link voltage requirement can be as high as 560V (three-phase inverter input), and input voltage can be as low as 48V (a string of four batteries or fuel cell). A detailed analysis of the steady-state operation of the power converter is provided in this paper to obtain the voltage gain of the converter. The circuit design is simulated in MATLAB Simulink to verify the results of the analysis of this converter. Further, the design guidelines are provided for the generalized form of the converter to achieve desired steady-state input-output gain.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114237030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9113014
Jaya Sharma, B. Kumar, Om Prakash Mahela, Akhil Ranjan Garg
This paper presents a research work focussed on the identification of faults on the distribution feeder supported by Stockwell transform based summing of absolute values and median features using the voltage signals. A fault index is proposed which is obtained by the multiplication of H-index (obtained summation of absolute values S-matrix evaluated by ST supported decomposition of voltage) and VS-index (obtained median of absolute values S-matrix evaluated by ST supported decomposition of voltage). Classification of faults is achieved using decision rules. Investigated faults include phase to ground, fault between two phases, two phases to ground fault and fault involving all three phases and ground. Performance of algorithm is tested on high fault impedance and fault incidence angle. Proposed study is performed using MATLAB software in Simulink environment.
{"title":"Protection of Distribution Feeder Using Stockwell Transform Supported Voltage Features","authors":"Jaya Sharma, B. Kumar, Om Prakash Mahela, Akhil Ranjan Garg","doi":"10.1109/PIICON49524.2020.9113014","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9113014","url":null,"abstract":"This paper presents a research work focussed on the identification of faults on the distribution feeder supported by Stockwell transform based summing of absolute values and median features using the voltage signals. A fault index is proposed which is obtained by the multiplication of H-index (obtained summation of absolute values S-matrix evaluated by ST supported decomposition of voltage) and VS-index (obtained median of absolute values S-matrix evaluated by ST supported decomposition of voltage). Classification of faults is achieved using decision rules. Investigated faults include phase to ground, fault between two phases, two phases to ground fault and fault involving all three phases and ground. Performance of algorithm is tested on high fault impedance and fault incidence angle. Proposed study is performed using MATLAB software in Simulink environment.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122012090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9113053
M. Saini, Jasbir Singh Saini, Rahul Kumar
Remote monitoring of electrical equipment in the existing power system network has become indispensable for ensuring the reliability and efficiency of entire power network. This paper presents a robust wavelet domain based image processing technique for deblurring aerial images of suspension type insulators to be employed in the power transmission network. The proposed technique modifies the wavelet transform coefficients of blurred aerial images. The resultant deblurred images, though, have small artifacts near edges but they do not cause any loss of significant information. The key contribution of this paper is validation of proposed algorithm on Xilinx ZedBoard to test the robustness of proposed technique for real-time applications.
{"title":"Coiflet Based Deblurring of Insulator Images for Remote Monitoring","authors":"M. Saini, Jasbir Singh Saini, Rahul Kumar","doi":"10.1109/PIICON49524.2020.9113053","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9113053","url":null,"abstract":"Remote monitoring of electrical equipment in the existing power system network has become indispensable for ensuring the reliability and efficiency of entire power network. This paper presents a robust wavelet domain based image processing technique for deblurring aerial images of suspension type insulators to be employed in the power transmission network. The proposed technique modifies the wavelet transform coefficients of blurred aerial images. The resultant deblurred images, though, have small artifacts near edges but they do not cause any loss of significant information. The key contribution of this paper is validation of proposed algorithm on Xilinx ZedBoard to test the robustness of proposed technique for real-time applications.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127286635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-02-01DOI: 10.1109/PIICON49524.2020.9113065
Pankaj Kumar Madaria, M. Bajaj, Surbhi Aggarwal, A. Singh
Fluctuation of voltage in the low power distribution grid, to which distributed energy resources (DER) are integrated, is a major power quality (PQ) concern. Particularly when the generation from the DERs is at the peak value of it and load requirement is minimum and either case also. In such cases, many PQ problems emerge at the point of common coupling (PCC) such as voltage sag, voltage swell and harmonics. Due to such problem supply to the load, become discontinuous i.e. unregulated supply to load. Therefore, it is indispensable to regulate the voltage of PCC. This paper presents a method to regulate the PCC voltage by connecting the renewable energy sources (RESs) with an R-C filter to the grid. This filter thus lessens the harmonics to a level as stated in the IEEE standard 519. The comparative analysis is done between the solar energy source with and without maximum power tracking to check their compatibility to integrate them with the grid. The autonomous power management (APM) system along with THD reduction is considered to reduce the power losses during islanding mode. The analysis of the solar model with and without maximum power is simulated in MATLAB software and the results of the simulated model are presented to endorse the effectiveness of this structure.
{"title":"A Grid-connected Solar PV Module with Autonomous Power Management","authors":"Pankaj Kumar Madaria, M. Bajaj, Surbhi Aggarwal, A. Singh","doi":"10.1109/PIICON49524.2020.9113065","DOIUrl":"https://doi.org/10.1109/PIICON49524.2020.9113065","url":null,"abstract":"Fluctuation of voltage in the low power distribution grid, to which distributed energy resources (DER) are integrated, is a major power quality (PQ) concern. Particularly when the generation from the DERs is at the peak value of it and load requirement is minimum and either case also. In such cases, many PQ problems emerge at the point of common coupling (PCC) such as voltage sag, voltage swell and harmonics. Due to such problem supply to the load, become discontinuous i.e. unregulated supply to load. Therefore, it is indispensable to regulate the voltage of PCC. This paper presents a method to regulate the PCC voltage by connecting the renewable energy sources (RESs) with an R-C filter to the grid. This filter thus lessens the harmonics to a level as stated in the IEEE standard 519. The comparative analysis is done between the solar energy source with and without maximum power tracking to check their compatibility to integrate them with the grid. The autonomous power management (APM) system along with THD reduction is considered to reduce the power losses during islanding mode. The analysis of the solar model with and without maximum power is simulated in MATLAB software and the results of the simulated model are presented to endorse the effectiveness of this structure.","PeriodicalId":422853,"journal":{"name":"2020 IEEE 9th Power India International Conference (PIICON)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124423578","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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