Pub Date : 2015-08-01DOI: 10.1109/ICPACE.2015.7274955
H. R. Poornima, Chandra Shekhar Reddy Atla, K. Balaraman
A group of customers connected to the present power grid are very much sensitive to the power interruptions and as well as power variations. Therefore it is the responsibility of the power utility to provide the reliable service and also in case of power curtailment, utility should promise as maximum as possible amount of power supply to all the connected loads of high priority customers and partial loads of low priority ones. The demand side management system used so far could take care of the consumer convenience to very less extent. There is some contribution towards demand response at the distribution feeder level and at the building area network level, but very less work has been done so far, about the substation level demand response. Therefore this paper proposes a substation management system, in which the demand limit can be allocated by Hierarchical Cumulative Voting (HCV) method based on the assigned weight to the respective consumers. The results show that, the demand limit can be assigned efficiently, which in turn can be used for Demand Response (DR) strategy, when the load exceeds the available power from the utility.
{"title":"Demand Response analysis for distribution system","authors":"H. R. Poornima, Chandra Shekhar Reddy Atla, K. Balaraman","doi":"10.1109/ICPACE.2015.7274955","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274955","url":null,"abstract":"A group of customers connected to the present power grid are very much sensitive to the power interruptions and as well as power variations. Therefore it is the responsibility of the power utility to provide the reliable service and also in case of power curtailment, utility should promise as maximum as possible amount of power supply to all the connected loads of high priority customers and partial loads of low priority ones. The demand side management system used so far could take care of the consumer convenience to very less extent. There is some contribution towards demand response at the distribution feeder level and at the building area network level, but very less work has been done so far, about the substation level demand response. Therefore this paper proposes a substation management system, in which the demand limit can be allocated by Hierarchical Cumulative Voting (HCV) method based on the assigned weight to the respective consumers. The results show that, the demand limit can be assigned efficiently, which in turn can be used for Demand Response (DR) strategy, when the load exceeds the available power from the utility.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"1 1","pages":"265-269"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86488104","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274973
B. Sachin, S. Madhu, Vijay Kumar, Sunil Kumar
Single Phase Matrix Converter (SPMC) operating as buck or boost rectifier with reduced switch count is illustrated in this paper. Six switches can be used in the proposed configuration as compared to eight switches in conventional SPMC, by removing two unused switches for buck or boost rectifier operation. Both buck and boost rectifier uses same circuit topology with six switches and R load. The operation of both buck and boost rectifier are observed and variation of output voltage with modulation index is analyzed. To synthesis the output pulse width modulation (PWM) technique is used. Buck and boost rectifier circuits are modeled using MATLAB/Simulink and selected simulation results are shown in this paper.
{"title":"Simulation of buck or boost rectifier using Single Phase Matrix Converter with reduced switch count","authors":"B. Sachin, S. Madhu, Vijay Kumar, Sunil Kumar","doi":"10.1109/ICPACE.2015.7274973","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274973","url":null,"abstract":"Single Phase Matrix Converter (SPMC) operating as buck or boost rectifier with reduced switch count is illustrated in this paper. Six switches can be used in the proposed configuration as compared to eight switches in conventional SPMC, by removing two unused switches for buck or boost rectifier operation. Both buck and boost rectifier uses same circuit topology with six switches and R load. The operation of both buck and boost rectifier are observed and variation of output voltage with modulation index is analyzed. To synthesis the output pulse width modulation (PWM) technique is used. Buck and boost rectifier circuits are modeled using MATLAB/Simulink and selected simulation results are shown in this paper.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"146 1","pages":"361-365"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77628361","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274984
K. B. Bommegowda, K. Vishwas, K. Suryanarayana, N. Renukappa
In this paper, single phase sinusoidal pulse width modulated (SPWM) inverter control with modified unipolar switching is presented. The two loops namely, capacitor current feedback as inner loop and output voltage feedback as outer loop were implemented. The mathematical model and state space analysis of power stage is derived and used to design the feedback compensators. The compensators for the two feedback loops are designed and verified using MATLAB and Simulink. The simulation results for a 1kVA SPWM inverter are presented. With the designed PI compensators, the system exhibits stable output voltage and good transient response for linear and non linear loads. For 700W load step, the output voltage recovers in a time less than 0.5ms.
{"title":"Single phase inverter control with capacitor current feedback","authors":"K. B. Bommegowda, K. Vishwas, K. Suryanarayana, N. Renukappa","doi":"10.1109/ICPACE.2015.7274984","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274984","url":null,"abstract":"In this paper, single phase sinusoidal pulse width modulated (SPWM) inverter control with modified unipolar switching is presented. The two loops namely, capacitor current feedback as inner loop and output voltage feedback as outer loop were implemented. The mathematical model and state space analysis of power stage is derived and used to design the feedback compensators. The compensators for the two feedback loops are designed and verified using MATLAB and Simulink. The simulation results for a 1kVA SPWM inverter are presented. With the designed PI compensators, the system exhibits stable output voltage and good transient response for linear and non linear loads. For 700W load step, the output voltage recovers in a time less than 0.5ms.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"339 1","pages":"418-422"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77656312","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274976
J. Mohanalakshmi, H. N. Suresh
Now-a-days, sensorless speed control modes of operation are becoming standard solutions in the area of electric drives. The technological developments require a compact and efficient drive to meet the challenging strategies in operation of the system. This paper provides a speed sensorless control of an Induction motor with a model based adaptive controller with stator current vectors. The purpose of the proposed control scheme is to create an algorithm that will make it possible to control induction motors without sensors. A closed loop estimation of the system with robustness against parameter variation is used for the control approach. A Model Reference Adaptive System (MRAS) is one of the major approaches used for adaptive control. The MRAS provides relatively easy implementation with a higher speed adaptation algorithm. MRAS proposed in this paper owing to its low complexity and less computational effort proposes a feasible methodology to control the speed of an Induction Motor (IM) drive without using speed sensors. Simulations results validate the effectiveness of this technique.
{"title":"Sensorless speed estimation and vector control of an Induction Motor drive using model reference adaptive control","authors":"J. Mohanalakshmi, H. N. Suresh","doi":"10.1109/ICPACE.2015.7274976","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274976","url":null,"abstract":"Now-a-days, sensorless speed control modes of operation are becoming standard solutions in the area of electric drives. The technological developments require a compact and efficient drive to meet the challenging strategies in operation of the system. This paper provides a speed sensorless control of an Induction motor with a model based adaptive controller with stator current vectors. The purpose of the proposed control scheme is to create an algorithm that will make it possible to control induction motors without sensors. A closed loop estimation of the system with robustness against parameter variation is used for the control approach. A Model Reference Adaptive System (MRAS) is one of the major approaches used for adaptive control. The MRAS provides relatively easy implementation with a higher speed adaptation algorithm. MRAS proposed in this paper owing to its low complexity and less computational effort proposes a feasible methodology to control the speed of an Induction Motor (IM) drive without using speed sensors. Simulations results validate the effectiveness of this technique.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"283 1","pages":"377-382"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80193916","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274982
V. Divyashree, S. Sumathi
Partial discharges are very small, local dielectric breakdowns in an insulation system. They cause damage to the insulation and leads to the failure of dielectric much before the expected lifetime. PD can be used as diagnostic tool for identifying the defects in power equipment. Two challenging issues are investigated in this work. The first issue is the feature extraction using statistical operator approach for obtaining representative attributes from the original PD measurement data. The second issue is to use the Extension Theory Pattern Recognition Algorithm for identifying various types of PD sources. The proposed method does not include any process learning or tuning of parameters, and it is easily implemented using MATLAB software in this paper.
{"title":"Extension theory based partial discharge pattern recognition using statistical operators","authors":"V. Divyashree, S. Sumathi","doi":"10.1109/ICPACE.2015.7274982","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274982","url":null,"abstract":"Partial discharges are very small, local dielectric breakdowns in an insulation system. They cause damage to the insulation and leads to the failure of dielectric much before the expected lifetime. PD can be used as diagnostic tool for identifying the defects in power equipment. Two challenging issues are investigated in this work. The first issue is the feature extraction using statistical operator approach for obtaining representative attributes from the original PD measurement data. The second issue is to use the Extension Theory Pattern Recognition Algorithm for identifying various types of PD sources. The proposed method does not include any process learning or tuning of parameters, and it is easily implemented using MATLAB software in this paper.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"82 1","pages":"409-412"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86158962","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274963
S. Umesh, T. Balachandra, A. Usha
Sulfur hexafluoride (SF6) is the most commonly used gas insulating medium in gas insulated switchgears (GIS). Apart from being a very good insulator, SF6 is a potential greenhouse gas with a global warming potential of 22 800 over a period of 100 years. Therefore its leakage to the environment should be strictly monitored. And also partial discharge in the SF6 filled switchgear chambers can reduce the life and quality of insulation. The partial discharge detection should be done at the early stage to prevent the quality degradation and ultimate failure of the system. Therefore it becomes very essential to monitor the leakage and partial discharge detection in a GIS. In this work, we are proposing new methodology to detect both SF6 leakage and SF6 decomposition due to partial discharge using a MEMS sensor that detects gas at room temperature.
{"title":"A novel MEMS sensor for online health monitoring of gas insulated switchgear systems","authors":"S. Umesh, T. Balachandra, A. Usha","doi":"10.1109/ICPACE.2015.7274963","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274963","url":null,"abstract":"Sulfur hexafluoride (SF6) is the most commonly used gas insulating medium in gas insulated switchgears (GIS). Apart from being a very good insulator, SF6 is a potential greenhouse gas with a global warming potential of 22 800 over a period of 100 years. Therefore its leakage to the environment should be strictly monitored. And also partial discharge in the SF6 filled switchgear chambers can reduce the life and quality of insulation. The partial discharge detection should be done at the early stage to prevent the quality degradation and ultimate failure of the system. Therefore it becomes very essential to monitor the leakage and partial discharge detection in a GIS. In this work, we are proposing new methodology to detect both SF6 leakage and SF6 decomposition due to partial discharge using a MEMS sensor that detects gas at room temperature.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"31 11 1","pages":"304-307"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78634148","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274954
Srikanth Tunga, R. Panguloori, Priyaranjan Mishra
This paper presents a linear regulator based LED driver, suitable for DC power distribution architectures. The steady state model and small signal analysis of the proposed circuit is presented. The compensator design and functional verification of the proposed driver through simulation using SIMetrix/SIMPLIS software are presented in this paper. The performance of the proposed driver, with compensator, is experimentally verified on a 20W LED string.
{"title":"Linear regulator based compact LED driver for DC distributed lighting system","authors":"Srikanth Tunga, R. Panguloori, Priyaranjan Mishra","doi":"10.1109/ICPACE.2015.7274954","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274954","url":null,"abstract":"This paper presents a linear regulator based LED driver, suitable for DC power distribution architectures. The steady state model and small signal analysis of the proposed circuit is presented. The compensator design and functional verification of the proposed driver through simulation using SIMetrix/SIMPLIS software are presented in this paper. The performance of the proposed driver, with compensator, is experimentally verified on a 20W LED string.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"9 1","pages":"258-264"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75531095","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274948
N. Nagarjuna, G. Shankar
This paper presents the load frequency control(LFC) of two area interconnected power system each comprising of a thermal unit with reheat turbine and a hydro generating unit. In order to have better performance of LFC, proportional-integral-derivative(PID) controller is used whose parameters are optimized using particle swarm optimization (PSO) technique. In the present work, effect of AC-DC tie lie on the performance of LFC in two area power system using PSO tuned controllers is tested and compared with the performance of LFC with only AC tie line. It is observed that the transient performance of the system with parallel AC-DC tie line is improved when compared to the performance of the system with only AC tie line. The results obtained are compared and presented.
{"title":"Load frequency control of two area power system with AC-DC tie line using PSO optimized controller","authors":"N. Nagarjuna, G. Shankar","doi":"10.1109/ICPACE.2015.7274948","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274948","url":null,"abstract":"This paper presents the load frequency control(LFC) of two area interconnected power system each comprising of a thermal unit with reheat turbine and a hydro generating unit. In order to have better performance of LFC, proportional-integral-derivative(PID) controller is used whose parameters are optimized using particle swarm optimization (PSO) technique. In the present work, effect of AC-DC tie lie on the performance of LFC in two area power system using PSO tuned controllers is tested and compared with the performance of LFC with only AC tie line. It is observed that the transient performance of the system with parallel AC-DC tie line is improved when compared to the performance of the system with only AC tie line. The results obtained are compared and presented.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"41 1","pages":"227-231"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77877970","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274918
Mohd Wajahatullah Naseem, Amit V. Mohod
In this paper, a novel cascaded multilevel inverter topology is proposed for a single phase inverter. The inverter is composed of a series connection of the suggested basic unit and it generates only positive levels at its output. Hence an H-bridge is further added to the proposed basic unit. The proposed topology has the main advantage of reduction in the count of power switches and driver circuits required to drive them that helps to lower the cost and ultimately the overall installation space. The proposed structure also has less dc voltage sources and driver circuits, when it is compared to the other inverter topologies. At the output voltage, the final inverter structure is able to produce all the voltage levels (positive as well as negative). The simulation is performed for verifying the operation of the inverter for a three cascaded stages of the basic unit that generates 37-levels at its output.
{"title":"A novel multilevel inverter with reduced count of power switches","authors":"Mohd Wajahatullah Naseem, Amit V. Mohod","doi":"10.1109/ICPACE.2015.7274918","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274918","url":null,"abstract":"In this paper, a novel cascaded multilevel inverter topology is proposed for a single phase inverter. The inverter is composed of a series connection of the suggested basic unit and it generates only positive levels at its output. Hence an H-bridge is further added to the proposed basic unit. The proposed topology has the main advantage of reduction in the count of power switches and driver circuits required to drive them that helps to lower the cost and ultimately the overall installation space. The proposed structure also has less dc voltage sources and driver circuits, when it is compared to the other inverter topologies. At the output voltage, the final inverter structure is able to produce all the voltage levels (positive as well as negative). The simulation is performed for verifying the operation of the inverter for a three cascaded stages of the basic unit that generates 37-levels at its output.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"33 1","pages":"64-69"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83980745","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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