Pub Date : 2017-10-01DOI: 10.1109/CERA.2017.8343363
Anupam Kumar, A. H. Bhat, P. Agarwal
Bidirectional energy transfer capability is the central part of a lot of modern power conversion systems. Preferably, for reduction of size, weight and cost these systems use a single high efficiency power electronic conversion system. A dual active bridge converter having two DC-AC converters connected back to back through an AC inductor/transformer is a common topology used for obtaining high efficiency bidirectional power conversion. Some characteristic features of the DAB converter topology are bidirectional power flow capability, inherent soft switching, high power density, high efficiency, galvanic isolation and low number of passive components. In this paper, circuit operation, design, and comparison of efficiency, switch stress, and closed loop operation for step load variation are discussed. Two common control strategies namely single phase shift, and extended phase shift are compared and respective waveforms are shown.
{"title":"Comparative analysis of dual active bridge isolated DC to DC converter with single phase shift and extended phase shift control techniques","authors":"Anupam Kumar, A. H. Bhat, P. Agarwal","doi":"10.1109/CERA.2017.8343363","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343363","url":null,"abstract":"Bidirectional energy transfer capability is the central part of a lot of modern power conversion systems. Preferably, for reduction of size, weight and cost these systems use a single high efficiency power electronic conversion system. A dual active bridge converter having two DC-AC converters connected back to back through an AC inductor/transformer is a common topology used for obtaining high efficiency bidirectional power conversion. Some characteristic features of the DAB converter topology are bidirectional power flow capability, inherent soft switching, high power density, high efficiency, galvanic isolation and low number of passive components. In this paper, circuit operation, design, and comparison of efficiency, switch stress, and closed loop operation for step load variation are discussed. Two common control strategies namely single phase shift, and extended phase shift are compared and respective waveforms are shown.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130536602","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343327
R. Goel, H. C. Verma, A. Baral, S. Chakravorti
Researchers have shown that analysis of Time Domain Spectroscopy (TDS) data is an effective tool for condition assessment of oil-paper insulation system. Among various TDS data, Polarization-Depolarization Current (PDC) has gained popularity in recent times. Accuracy of non-invasive technique (like analysis of PDC data) has always been a topic of concern among utilities. This accuracy can be improved by better understanding of dielectric response function as a function of paper-moisture content and aging byproducts. In this research work, a non-linear relation between paper-moisture and some commonly measured insulation sensitive performance parameters is reported. Related analysis presented in the paper show that the proposed relationship, compared to other existing techniques, is capable of providing better accuracy in predicting paper-moisture value. The proposed technique is tested using data collected from several laboratory samples.
{"title":"A novel method to predict moisture in cellulosic insulation of power transformer with improved accuracy using time domain spectroscopy data","authors":"R. Goel, H. C. Verma, A. Baral, S. Chakravorti","doi":"10.1109/CERA.2017.8343327","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343327","url":null,"abstract":"Researchers have shown that analysis of Time Domain Spectroscopy (TDS) data is an effective tool for condition assessment of oil-paper insulation system. Among various TDS data, Polarization-Depolarization Current (PDC) has gained popularity in recent times. Accuracy of non-invasive technique (like analysis of PDC data) has always been a topic of concern among utilities. This accuracy can be improved by better understanding of dielectric response function as a function of paper-moisture content and aging byproducts. In this research work, a non-linear relation between paper-moisture and some commonly measured insulation sensitive performance parameters is reported. Related analysis presented in the paper show that the proposed relationship, compared to other existing techniques, is capable of providing better accuracy in predicting paper-moisture value. The proposed technique is tested using data collected from several laboratory samples.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130800935","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343334
Kanhaiya Kumar, G. Kumbhar
To maintain the reliability of power supply, proper functioning of all equipment is necessary. The distribution transformers constitute a major part of a distribution system and its remaining life should be properly investigated. Renewable energy sources are integrated into a distribution system to reduce losses, improving voltage profile and save energy cost. This may affect the life of equipment present in the existing system. In this paper, a practical distribution system with installed rooftop solar photo-voltaic (PV) units is considered for investigation. Total study periods has been divided into three parts. The benefits of PV in terms of the life of the transformers have been quantified for the each part. For PV integration and time-series load flow simulation, MATLAB component objective model (COM) interface of OpenDSS is used. The actual load, load shape, temperature and irradiation data have been collected to prepare input to the simulation model. The results show that there is a considerable decrease in the rate of aging of the distribution transformer.
{"title":"The effect of solar power injection on aging of a distribution transformer","authors":"Kanhaiya Kumar, G. Kumbhar","doi":"10.1109/CERA.2017.8343334","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343334","url":null,"abstract":"To maintain the reliability of power supply, proper functioning of all equipment is necessary. The distribution transformers constitute a major part of a distribution system and its remaining life should be properly investigated. Renewable energy sources are integrated into a distribution system to reduce losses, improving voltage profile and save energy cost. This may affect the life of equipment present in the existing system. In this paper, a practical distribution system with installed rooftop solar photo-voltaic (PV) units is considered for investigation. Total study periods has been divided into three parts. The benefits of PV in terms of the life of the transformers have been quantified for the each part. For PV integration and time-series load flow simulation, MATLAB component objective model (COM) interface of OpenDSS is used. The actual load, load shape, temperature and irradiation data have been collected to prepare input to the simulation model. The results show that there is a considerable decrease in the rate of aging of the distribution transformer.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124182620","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343306
Akanksha Shukla, K. Verma, R. Kumar
Increased penetration of Electric Vehicle (EV) in the recent past introduces new type of load in the distribution system. Charging of EV may overload the system components, increase voltage deviation and system losses. To analyse the impact of charging of EV on distribution, there is a need of modelling of EV charging load. Currently Constant Power Load (CPL) is considered for the load modelling which does not represent dependency of charging load with the system voltage. In this paper, an accurate load modelling of EV is done considering the charging behaviour of EV. Single stage and multi-stage time variant coefficients of ZIP load model and exponential load model are estimated to model the voltage dependency based on the EV charging characteristics. Estimation problem is formulated as least square minimization problem. Quadratic Programming (QP) and Differential Evolution (DE) is used to solve the estimation problem for ZIP load model and exponential load model respectively.
{"title":"Multi-stage voltage dependent load modelling of fast charging electric vehicle","authors":"Akanksha Shukla, K. Verma, R. Kumar","doi":"10.1109/CERA.2017.8343306","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343306","url":null,"abstract":"Increased penetration of Electric Vehicle (EV) in the recent past introduces new type of load in the distribution system. Charging of EV may overload the system components, increase voltage deviation and system losses. To analyse the impact of charging of EV on distribution, there is a need of modelling of EV charging load. Currently Constant Power Load (CPL) is considered for the load modelling which does not represent dependency of charging load with the system voltage. In this paper, an accurate load modelling of EV is done considering the charging behaviour of EV. Single stage and multi-stage time variant coefficients of ZIP load model and exponential load model are estimated to model the voltage dependency based on the EV charging characteristics. Estimation problem is formulated as least square minimization problem. Quadratic Programming (QP) and Differential Evolution (DE) is used to solve the estimation problem for ZIP load model and exponential load model respectively.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129716686","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343373
S. Behera, Matruprasad Jyotiranjan, B. B. Pati
A stable PID controller design can be carried out by properly choosing pole location for desired performance in pole placement approach. Here the control of a plant represented by second order model is carried out by self-tuning adaptive PID (STC-PID) controller based on optimal pole placement design. The pole placement design is carried out by Particle Swarm Optimization (PSO) technique for STC-PID, in conjunction with on-line identification using recursive least square (RLS) parameter estimation method with directional forget factor for an Auto Regression Exogenous (ARX) model. The designed optimal pole placement self-tuning PID (PSO-PP STC-PID) Controller excels in performance to that of fixed-gain optimal PID Controller under parameter variation and random input. The design approach is applied to a case of Hybrid Power Generation System (HPGS) and the performance is presented in a comparative manner.
{"title":"Optimal pole placement for a self tuning PID controller","authors":"S. Behera, Matruprasad Jyotiranjan, B. B. Pati","doi":"10.1109/CERA.2017.8343373","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343373","url":null,"abstract":"A stable PID controller design can be carried out by properly choosing pole location for desired performance in pole placement approach. Here the control of a plant represented by second order model is carried out by self-tuning adaptive PID (STC-PID) controller based on optimal pole placement design. The pole placement design is carried out by Particle Swarm Optimization (PSO) technique for STC-PID, in conjunction with on-line identification using recursive least square (RLS) parameter estimation method with directional forget factor for an Auto Regression Exogenous (ARX) model. The designed optimal pole placement self-tuning PID (PSO-PP STC-PID) Controller excels in performance to that of fixed-gain optimal PID Controller under parameter variation and random input. The design approach is applied to a case of Hybrid Power Generation System (HPGS) and the performance is presented in a comparative manner.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125095293","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343302
S. Sarangi, P. Jena
Load encroachment function fails to prevent zone 3 maloperation during high reactive loading condition. Such maloperations often causes in cascaded tripping which leads to wide area blackouts. In this work, a group of Phasor Measurement Units (PMUs) are selected to support the distance relay decision during load encroachment. An index D is computed using change in magnitude and phase angle of voltage collected from the selected PMU buses. The negative D depicts a load encroachment and supports the zone 3 decision when apparent impedance enters inside zone 3 characteristic. Performance of proposed method is tested with IEEE 39-bus simulated in EMTDC/PSCAD. Results show the accuracy of the proposed method.
{"title":"Secured zone 3 protection during load enchrochment using synchrophasors","authors":"S. Sarangi, P. Jena","doi":"10.1109/CERA.2017.8343302","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343302","url":null,"abstract":"Load encroachment function fails to prevent zone 3 maloperation during high reactive loading condition. Such maloperations often causes in cascaded tripping which leads to wide area blackouts. In this work, a group of Phasor Measurement Units (PMUs) are selected to support the distance relay decision during load encroachment. An index D is computed using change in magnitude and phase angle of voltage collected from the selected PMU buses. The negative D depicts a load encroachment and supports the zone 3 decision when apparent impedance enters inside zone 3 characteristic. Performance of proposed method is tested with IEEE 39-bus simulated in EMTDC/PSCAD. Results show the accuracy of the proposed method.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129629226","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343369
Rahul Sharma, A. Das
Three phase power in solar PhotoVoltaic (PV) application is often unbalanced due to non-uniform radiation and temperature level on each cluster solar PV array. This is also true for PV fed cascaded H-bridge (CHB) multilevel converter. Thus the grid current supplied by the converter is unbalanced which is not desirable in balanced grid system. For supplying balanced three phase current, a common mode voltage is added with the pole voltages of CHB converter. It circulates active and reactive power in the phase clusters and allows balanced three phase power to be supplied to the grid. This paper presents a geometrical approach to calculate common mode voltage during unequal power level on three phase cluster. The capacitor voltage balancing of individual cluster and cell are also presented during different power level in the cell. Mathematical derivation of common mode voltage based on unequal phase cluster power are also included in the paper. Phase shifted Sinusoidal Pulse width modulation (SPWM) technique is used to operate the CHB multilevel converter. Simulation results of three phase current balancing during non-uniform radiation are verified using Matlab/Simulink.
{"title":"Per phase power balancing in grid connected cascaded H-bridge multilevel converter for solar PV application","authors":"Rahul Sharma, A. Das","doi":"10.1109/CERA.2017.8343369","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343369","url":null,"abstract":"Three phase power in solar PhotoVoltaic (PV) application is often unbalanced due to non-uniform radiation and temperature level on each cluster solar PV array. This is also true for PV fed cascaded H-bridge (CHB) multilevel converter. Thus the grid current supplied by the converter is unbalanced which is not desirable in balanced grid system. For supplying balanced three phase current, a common mode voltage is added with the pole voltages of CHB converter. It circulates active and reactive power in the phase clusters and allows balanced three phase power to be supplied to the grid. This paper presents a geometrical approach to calculate common mode voltage during unequal power level on three phase cluster. The capacitor voltage balancing of individual cluster and cell are also presented during different power level in the cell. Mathematical derivation of common mode voltage based on unequal phase cluster power are also included in the paper. Phase shifted Sinusoidal Pulse width modulation (SPWM) technique is used to operate the CHB multilevel converter. Simulation results of three phase current balancing during non-uniform radiation are verified using Matlab/Simulink.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114792869","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343358
Nishant Jain, Vinod Kumar
US images are contaminated with speckle noise. To reduce the effect of speckle noise in the extraction of FOS, in this paper it is proposed to remove some of the pixels from both sides of the lower and higher pixel intensities arranged in order of intensity of an image, before the evaluation of FOS features. It is somewhat similar to alpha-trimmed filtering of images and hence in this paper this enhanced FOS method is called as alpha-trimmed FOS. To show the effectiveness of the proposed alpha-trimmed FOS method, features extracted from this method are used for the classification of liver ultrasound images and the classification accuracy obtained is compared with the accuracy obtained using the features extracted from normal FOS method. In the paper performance of proposed method is evaluated using two classifiers (Neural network and SVM). For alpha-trimmed FOS features, best accuracy obtained by neural network is 66.86% which is far better than the classification accuracy of 34.91% obtained with normal FOS features. Classification accuracy obtained by SVM with alpha-trimmed FOS features is 59.76% which is better as compared to accuracy of 53.85% obtained with normal FOS features.
{"title":"Alpha-trimmed first order statistics for the classification of liver US images","authors":"Nishant Jain, Vinod Kumar","doi":"10.1109/CERA.2017.8343358","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343358","url":null,"abstract":"US images are contaminated with speckle noise. To reduce the effect of speckle noise in the extraction of FOS, in this paper it is proposed to remove some of the pixels from both sides of the lower and higher pixel intensities arranged in order of intensity of an image, before the evaluation of FOS features. It is somewhat similar to alpha-trimmed filtering of images and hence in this paper this enhanced FOS method is called as alpha-trimmed FOS. To show the effectiveness of the proposed alpha-trimmed FOS method, features extracted from this method are used for the classification of liver ultrasound images and the classification accuracy obtained is compared with the accuracy obtained using the features extracted from normal FOS method. In the paper performance of proposed method is evaluated using two classifiers (Neural network and SVM). For alpha-trimmed FOS features, best accuracy obtained by neural network is 66.86% which is far better than the classification accuracy of 34.91% obtained with normal FOS features. Classification accuracy obtained by SVM with alpha-trimmed FOS features is 59.76% which is better as compared to accuracy of 53.85% obtained with normal FOS features.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"22 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128639449","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343326
Abhinav Aggarwal, M. M. Tripathi
This paper presents a novel hybrid intelligent algorithm to forecast day-ahead electricity prices in the ISO New England market for 2014. The proposed algorithm is consisting of signal processing technique based on wavelet transform (WT), a Time Series Time Delay Artificial Neural Network (TSDNN) based prediction network and an error predicting algorithm (EP) based on TSDNN. A comprehensive comparative analysis using the proposed hybrid model, with the specified data from ISO New England website shows significant improvement in forecast error by more than 71.8% for daily price forecasts. Furthermore, a high degree of accuracy of the proposed model is established due to low values obtained for the root mean square error (RMS) and mean absolute error (MAE). The analysis of the performance of the algorithm using both, standard and new performance parameters-Are done to measure the robustness of the proposed hybrid intelligent model. In addition, the rapid adaptability of the proposed hybrid model is also evaluated using the ISO NE electricity market.
{"title":"A novel hybrid approach using wavelet transform, time series time delay neural network, and error predicting algorithm for day-ahead electricity price forecasting","authors":"Abhinav Aggarwal, M. M. Tripathi","doi":"10.1109/CERA.2017.8343326","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343326","url":null,"abstract":"This paper presents a novel hybrid intelligent algorithm to forecast day-ahead electricity prices in the ISO New England market for 2014. The proposed algorithm is consisting of signal processing technique based on wavelet transform (WT), a Time Series Time Delay Artificial Neural Network (TSDNN) based prediction network and an error predicting algorithm (EP) based on TSDNN. A comprehensive comparative analysis using the proposed hybrid model, with the specified data from ISO New England website shows significant improvement in forecast error by more than 71.8% for daily price forecasts. Furthermore, a high degree of accuracy of the proposed model is established due to low values obtained for the root mean square error (RMS) and mean absolute error (MAE). The analysis of the performance of the algorithm using both, standard and new performance parameters-Are done to measure the robustness of the proposed hybrid intelligent model. In addition, the rapid adaptability of the proposed hybrid model is also evaluated using the ISO NE electricity market.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128220954","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 : 2017-10-01DOI: 10.1109/CERA.2017.8343333
Parkash Kumar, Amol Kale, M. Ranade
During an event of internal arc fault in LV/MV switchgears an electrical energy of the order of several Mega-joules is released which should be dissipated in the span of few milliseconds. Major portion of this energy is utilized in the heating of the enclosure gases resulting in the significant pressure rise inside the chamber. Objective of the simulation model developed is to improve design efficiency, increased safety, and especially to minimise real-world testing. Internal arc parameters such as pressure rise in various compartment, exhaust gas temperature, indicator temperature and pressure on panel walls are investigated with CFD simulation methodology. A 3-D CFD simulation of high temperature gases in LV/MV panel is carried out with coupled interactions between flow, temperature, turbulence and radiation fields taken into account. The internal temperature and pressure rise due to internal arc at different locations in breaker, cable and busbar compartment were compared. The same is used further to analyse structural forces and stresses on the panel members. Temperature rise at different locations on indicator walls which are modelled at a distance of 300 mm from panel were estimated from simulation. Visualization of the temperature, pressure and flow field is possible with CFD model.
{"title":"Internal arc fault simulation using CFD to predict thermal behavior in switchgear","authors":"Parkash Kumar, Amol Kale, M. Ranade","doi":"10.1109/CERA.2017.8343333","DOIUrl":"https://doi.org/10.1109/CERA.2017.8343333","url":null,"abstract":"During an event of internal arc fault in LV/MV switchgears an electrical energy of the order of several Mega-joules is released which should be dissipated in the span of few milliseconds. Major portion of this energy is utilized in the heating of the enclosure gases resulting in the significant pressure rise inside the chamber. Objective of the simulation model developed is to improve design efficiency, increased safety, and especially to minimise real-world testing. Internal arc parameters such as pressure rise in various compartment, exhaust gas temperature, indicator temperature and pressure on panel walls are investigated with CFD simulation methodology. A 3-D CFD simulation of high temperature gases in LV/MV panel is carried out with coupled interactions between flow, temperature, turbulence and radiation fields taken into account. The internal temperature and pressure rise due to internal arc at different locations in breaker, cable and busbar compartment were compared. The same is used further to analyse structural forces and stresses on the panel members. Temperature rise at different locations on indicator walls which are modelled at a distance of 300 mm from panel were estimated from simulation. Visualization of the temperature, pressure and flow field is possible with CFD model.","PeriodicalId":286358,"journal":{"name":"2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128182703","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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