Pub Date : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960226
P. Ramesh, K. Palanisamy, S. Paramasivam, R. Govarthanan
This paper investigates the high frequency effects (2-9 kHz) on the DC link inductor of Variable Frequency Drive (VFD) connected to the grid with Shunt Active Filter (SAF) for harmonic mitigation at common point of coupling (PCC). Active filter generally operates in different conditions including voltage imbalance up to 3% and varying rated load. Most of available active filters in market operate efficiently with switching frequency in the range of 3-5 kHz. Although harmonic mitigation is the focus point of SAF use, impedance seen by diode bridge rectifier is significantly reduced which in turn increases stresses on DC link inductor and DC filter capacitor ripple current. Effects of these parameter variations in frequency range of 2–9 kHz predominantly are DC link inductor core loss, DC filter capacitor life time and increased conduction losses of diode bridge rectifier. 130 Amperes SAF connected to grid driving 132 kW VFD under different operating conditions is analyzed through MATLAB simulation and practical test measurements. Reliability variation in front end rectifier utilities such as variable frequency drives with special emphasis on DC link inductor is discussed in detail.
{"title":"Analysis of High Frequency Impact on the DC Link Inductor of VFD Under the Influence of Shunt Active Filter","authors":"P. Ramesh, K. Palanisamy, S. Paramasivam, R. Govarthanan","doi":"10.1109/i-PACT44901.2019.8960226","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960226","url":null,"abstract":"This paper investigates the high frequency effects (2-9 kHz) on the DC link inductor of Variable Frequency Drive (VFD) connected to the grid with Shunt Active Filter (SAF) for harmonic mitigation at common point of coupling (PCC). Active filter generally operates in different conditions including voltage imbalance up to 3% and varying rated load. Most of available active filters in market operate efficiently with switching frequency in the range of 3-5 kHz. Although harmonic mitigation is the focus point of SAF use, impedance seen by diode bridge rectifier is significantly reduced which in turn increases stresses on DC link inductor and DC filter capacitor ripple current. Effects of these parameter variations in frequency range of 2–9 kHz predominantly are DC link inductor core loss, DC filter capacitor life time and increased conduction losses of diode bridge rectifier. 130 Amperes SAF connected to grid driving 132 kW VFD under different operating conditions is analyzed through MATLAB simulation and practical test measurements. Reliability variation in front end rectifier utilities such as variable frequency drives with special emphasis on DC link inductor is discussed in detail.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125051687","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960173
M. Umamaheswari, Dr. P. V. Ramana Rao, S. V. Jayaram Kumar
Hitherto this paper presents around Active power along with Reactive power clout of a grid allied doubly fed Induction Generator (DFIG) with wind energy system (WES) employing PI & ANFIS controller and ALO (Ant lion Optimization) FOPI (Fraction Order PI) Controller. DFIG is adapted in d-q revolving allusion cage circuit with stator flux oriented, field oriented clout approach. By using a coterminous converter of Variable speed constant Frequency (VSCF) along with active the reactive power and DC tie voltage are controlled at sub and super synchronous speeds. A PI controller has been combined with an ANFIS controller in order to enhance the power controlling capability at steady state and voltage dip conditions and then the results are combined with FOPI controller tuned by a Heuristic Ant Lion Controller to strengthen the work of conventional PI controller. The Active and Reactive Powers can intensify further by casting with an MPPT arrangement depleted by using Cuckoo Search.
{"title":"Active and Reactive Power Control of DFIG Wind Power System by Heuristic Controllers","authors":"M. Umamaheswari, Dr. P. V. Ramana Rao, S. V. Jayaram Kumar","doi":"10.1109/i-PACT44901.2019.8960173","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960173","url":null,"abstract":"Hitherto this paper presents around Active power along with Reactive power clout of a grid allied doubly fed Induction Generator (DFIG) with wind energy system (WES) employing PI & ANFIS controller and ALO (Ant lion Optimization) FOPI (Fraction Order PI) Controller. DFIG is adapted in d-q revolving allusion cage circuit with stator flux oriented, field oriented clout approach. By using a coterminous converter of Variable speed constant Frequency (VSCF) along with active the reactive power and DC tie voltage are controlled at sub and super synchronous speeds. A PI controller has been combined with an ANFIS controller in order to enhance the power controlling capability at steady state and voltage dip conditions and then the results are combined with FOPI controller tuned by a Heuristic Ant Lion Controller to strengthen the work of conventional PI controller. The Active and Reactive Powers can intensify further by casting with an MPPT arrangement depleted by using Cuckoo Search.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125070851","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960031
Nidhi J. Dadiya, Mukesh M Goswami
Textual information in images contains small but crucial information. Text detection is first necessary step to extract text from images. It has applications including intelligent car driving system, translation, information retrieval and many more. Therefore as a result, it is broadly studied. Detecting texts from images is a complex problem due to background, varied font size, style, orientation and transparency of text. Detecting multilingual text from images adds further complexity to computer vision problem that is primary to a collection of prominent applications. Since India is a multilingual country, multi script texts appears almost everywhere. The universal features for multi script environment are unknown due to different format, height and strokes of languages. Therefore detecting multi script text from images is an important yet unsolved problem. This paper provides a survey on available techniques to detect multi script text from images.
{"title":"Multi-script Text Detection from Images: A Survey","authors":"Nidhi J. Dadiya, Mukesh M Goswami","doi":"10.1109/i-PACT44901.2019.8960031","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960031","url":null,"abstract":"Textual information in images contains small but crucial information. Text detection is first necessary step to extract text from images. It has applications including intelligent car driving system, translation, information retrieval and many more. Therefore as a result, it is broadly studied. Detecting texts from images is a complex problem due to background, varied font size, style, orientation and transparency of text. Detecting multilingual text from images adds further complexity to computer vision problem that is primary to a collection of prominent applications. Since India is a multilingual country, multi script texts appears almost everywhere. The universal features for multi script environment are unknown due to different format, height and strokes of languages. Therefore detecting multi script text from images is an important yet unsolved problem. This paper provides a survey on available techniques to detect multi script text from images.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129702265","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960047
Abhishek Nair.M, A. Dewangan, G. Mary A
Cloud computing has become a cornerstone of development during this era of computing. More and more users are turning to the cloud services provided by the third party service providers at cheaper costs and high availability. But protection and privacy of the data stored in the cloud is still a major concern since the users data is being controlled by a third –party in between. Encryption becomes an obvious choice though but is is still questionable on how well the data in its encrypted form can be managed at the cloud . We have proposed a method of applying partitioning techniques on the encrypted structured database in cloud . We have used the hash partitioning technique to partition our database. Our proposed method is compared against a traditional coding table method and it is found to be comaparitively efficient in terms of the running time of the queries.
{"title":"Efficient Retrieval of Data from Cloud Databases using Hash Partitioned Buckets","authors":"Abhishek Nair.M, A. Dewangan, G. Mary A","doi":"10.1109/i-PACT44901.2019.8960047","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960047","url":null,"abstract":"Cloud computing has become a cornerstone of development during this era of computing. More and more users are turning to the cloud services provided by the third party service providers at cheaper costs and high availability. But protection and privacy of the data stored in the cloud is still a major concern since the users data is being controlled by a third –party in between. Encryption becomes an obvious choice though but is is still questionable on how well the data in its encrypted form can be managed at the cloud . We have proposed a method of applying partitioning techniques on the encrypted structured database in cloud . We have used the hash partitioning technique to partition our database. Our proposed method is compared against a traditional coding table method and it is found to be comaparitively efficient in terms of the running time of the queries.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129369355","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960134
D. Srinivasa, U. Surendra
Liquid dielectrics are extensively used in electrical apparatus which are operating in distribution and transmission systems. The function of electrical equipment strongly depends on the conditions of liquid dielectric. Liquid dielectrics used are the most expensive components in power system apparatus like transformers and circuit breakers. A failure of these equipment would causes a heavy loss to the electrical industry and also utilities. Insulation failures are the leading cause of transformer failures and thus the liquid dielectrics plays a major role in the safe operation of transformers. One of the main causes for the failure of transformers is due to the presence of moisture. In this work, the life of insulating medium is estimated by comparing the Breakdown strength and Viscosity of different pure oils with that of the contaminated oils (which contains moisture) and also finding the alternative for mineral oil. vegetable oils which are reliable, cost-effective and environmental friendly even when they are contaminated.
{"title":"Comparative study of Breakdown Phenomena and Viscosity in Liquid Dielectrics","authors":"D. Srinivasa, U. Surendra","doi":"10.1109/i-PACT44901.2019.8960134","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960134","url":null,"abstract":"Liquid dielectrics are extensively used in electrical apparatus which are operating in distribution and transmission systems. The function of electrical equipment strongly depends on the conditions of liquid dielectric. Liquid dielectrics used are the most expensive components in power system apparatus like transformers and circuit breakers. A failure of these equipment would causes a heavy loss to the electrical industry and also utilities. Insulation failures are the leading cause of transformer failures and thus the liquid dielectrics plays a major role in the safe operation of transformers. One of the main causes for the failure of transformers is due to the presence of moisture. In this work, the life of insulating medium is estimated by comparing the Breakdown strength and Viscosity of different pure oils with that of the contaminated oils (which contains moisture) and also finding the alternative for mineral oil. vegetable oils which are reliable, cost-effective and environmental friendly even when they are contaminated.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129658368","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8959948
Mandar M. Bhalekar, Thirumalaivasan R, Janaki M
One of the important components in the electrical system is the inverter which converts the DC energy stored in the battery banks to AC energy that is used by consumers or connected to power grid. As the current trend needed cleaner power supply, higher output power, less losses and almost free from harmonics, people are looking forward for better inverter. A conventional multilevel inverter is no more relevant to cope up with the requirements. Nowadays, to overcome the said problems is the point of concern for industries and researchers. In this paper new multilevel inverter topologies are referred over conventional ones as the quality of output voltages improves with the number of voltage steps at the output. These new topologies utilizes fewer power electronics components to generate a specific number of output voltage levels in comparison with the traditional multilevel inverters resulting in compact, reliable, efficient and economical solution.
{"title":"Simulated Evaluation of Modern Multilevel Inverter Topologies","authors":"Mandar M. Bhalekar, Thirumalaivasan R, Janaki M","doi":"10.1109/i-PACT44901.2019.8959948","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8959948","url":null,"abstract":"One of the important components in the electrical system is the inverter which converts the DC energy stored in the battery banks to AC energy that is used by consumers or connected to power grid. As the current trend needed cleaner power supply, higher output power, less losses and almost free from harmonics, people are looking forward for better inverter. A conventional multilevel inverter is no more relevant to cope up with the requirements. Nowadays, to overcome the said problems is the point of concern for industries and researchers. In this paper new multilevel inverter topologies are referred over conventional ones as the quality of output voltages improves with the number of voltage steps at the output. These new topologies utilizes fewer power electronics components to generate a specific number of output voltage levels in comparison with the traditional multilevel inverters resulting in compact, reliable, efficient and economical solution.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127140406","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960056
Ganesh Prasad Khuntia, Ritesh Dash, Sarat Chandra Swain, P. Roy, Pramod Kumar Baghmar, Riya Paul
The increase in the capacity of wind turbines and development has achieved a remarkable high during the last decade. The grid connected wind farm must able to provide quality power and as well as grid reliability must be maintained with new regulations and grid code. It is a general practice to study the power quality of grid connected wind farm system along with its disturbance and how it affects the grid to which it is connected. In this paper a comparative analysis of different wind farms and their grid connected activities along with PI- linear controller has been demonstrated. A comparative analysis of wind turbine performance has been demonstrated in this paper. Matlab Simulink model has been used for modelling of the system and study the performance of system under grid disturbances.
{"title":"Power Quality Analysis of Wind Generator under Symmetrical Fault Condition","authors":"Ganesh Prasad Khuntia, Ritesh Dash, Sarat Chandra Swain, P. Roy, Pramod Kumar Baghmar, Riya Paul","doi":"10.1109/i-PACT44901.2019.8960056","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960056","url":null,"abstract":"The increase in the capacity of wind turbines and development has achieved a remarkable high during the last decade. The grid connected wind farm must able to provide quality power and as well as grid reliability must be maintained with new regulations and grid code. It is a general practice to study the power quality of grid connected wind farm system along with its disturbance and how it affects the grid to which it is connected. In this paper a comparative analysis of different wind farms and their grid connected activities along with PI- linear controller has been demonstrated. A comparative analysis of wind turbine performance has been demonstrated in this paper. Matlab Simulink model has been used for modelling of the system and study the performance of system under grid disturbances.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"14 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130069940","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960207
Jishnu Sankar V C, Ajay Ramadas, Harikrishnan S K, Saurav P K, Abhiram A K, Sachin Harikrishna P L, M. Nair
Balancing of generation and load in a grid is done using generation control. But in the case of an islanded microgrid using Distributed Energy Resources (DERs), there are chances that the load would exceed the maximum generation of the system, causing a total breakdown of the system and thus a blackout. The best method to overcome this likely event is the implementation of load management. Load management accompanied by Demand Response (DR) ensures that the load remains balanced while the consumer is in control of the energy they consume. Load management utilizes modern advancements like IoT and cloud computing to involve the consumers and negate the wall between them and the electric companies. In this work load management is achieved using two different algorithms - the Optimal Load Scheduling Algorithm (OLSA) and the Optimal Real-Time Load Sharing Algorithm (ORSA). Together, the algorithms ensure that the load is satisfied with a day ahead schedule and during real-time.
{"title":"Management of Unprioritized Loads in an Islanded Microgrid: Algorithms for Scheduling of Historic Load Data and Real-Time Load Management","authors":"Jishnu Sankar V C, Ajay Ramadas, Harikrishnan S K, Saurav P K, Abhiram A K, Sachin Harikrishna P L, M. Nair","doi":"10.1109/i-PACT44901.2019.8960207","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960207","url":null,"abstract":"Balancing of generation and load in a grid is done using generation control. But in the case of an islanded microgrid using Distributed Energy Resources (DERs), there are chances that the load would exceed the maximum generation of the system, causing a total breakdown of the system and thus a blackout. The best method to overcome this likely event is the implementation of load management. Load management accompanied by Demand Response (DR) ensures that the load remains balanced while the consumer is in control of the energy they consume. Load management utilizes modern advancements like IoT and cloud computing to involve the consumers and negate the wall between them and the electric companies. In this work load management is achieved using two different algorithms - the Optimal Load Scheduling Algorithm (OLSA) and the Optimal Real-Time Load Sharing Algorithm (ORSA). Together, the algorithms ensure that the load is satisfied with a day ahead schedule and during real-time.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131695963","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960074
P. S. Srinivasa Rao, B. Srinivasa Rao, Santhosh Kumar, G. Sreenivasulu
In this paper, deal with image for analyze and compress without loss of brightness by wavelet transformation with various compression methods. Generally, image or signal can be analysed either frequency or time domain. In wavelet transformation the image can be considered in frequency and time domain. In this technique image can be compressed or reduced about 70% of original image without loss of brightness. The wavelet transformation is performed for small and large data. It can be chunked signal from large signal and examined for small signal without maximum loss of threshold.
{"title":"Analysis And Synthesis of Image Using Wavelet Transform and Compression Methods","authors":"P. S. Srinivasa Rao, B. Srinivasa Rao, Santhosh Kumar, G. Sreenivasulu","doi":"10.1109/i-PACT44901.2019.8960074","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960074","url":null,"abstract":"In this paper, deal with image for analyze and compress without loss of brightness by wavelet transformation with various compression methods. Generally, image or signal can be analysed either frequency or time domain. In wavelet transformation the image can be considered in frequency and time domain. In this technique image can be compressed or reduced about 70% of original image without loss of brightness. The wavelet transformation is performed for small and large data. It can be chunked signal from large signal and examined for small signal without maximum loss of threshold.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125406510","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 : 2019-03-01DOI: 10.1109/i-PACT44901.2019.8960216
M. S. Ghayad, N. Badra, M. Attia, A. Abdelaziz, S. Sushanth Kumar, Sachin Kumar, R. K. Saket
This paper focuses in studying the dynamic response of the voltage source converters high-voltage direct current (VSC-HVDC) connected to grid. In order to get faster response the magnitude of the active power, reactive power and the DC link voltage should be controlled. Optimizing the parameters of PI (proportional & integration) controller is necessary to control the said quantities. In this context meta-heuristic optimization methods i.e. gravitational search algorithm (GSA) and sine cosine algorithm (SCA) are used to obtain optimal parameters of PI controller. GSA algorithm is based on the gravity law for Newton while SCA depends on mathematical model based on cosine and sine functions. It is worthy to mention these algorithms have an efficient global search capability. Using MATLAB™ Simulink, model of VSC-HVDC system is presented. This system is exposed to different disturbances for demonstrating its dynamic response. Simulation results exhibit the dynamic response is improved with the optimal gains than that of default ones.
{"title":"Gravitational Search and Sine Cosine Algorithms to Enhance the VSC-HVDC System Performance Under Different Disturbances","authors":"M. S. Ghayad, N. Badra, M. Attia, A. Abdelaziz, S. Sushanth Kumar, Sachin Kumar, R. K. Saket","doi":"10.1109/i-PACT44901.2019.8960216","DOIUrl":"https://doi.org/10.1109/i-PACT44901.2019.8960216","url":null,"abstract":"This paper focuses in studying the dynamic response of the voltage source converters high-voltage direct current (VSC-HVDC) connected to grid. In order to get faster response the magnitude of the active power, reactive power and the DC link voltage should be controlled. Optimizing the parameters of PI (proportional & integration) controller is necessary to control the said quantities. In this context meta-heuristic optimization methods i.e. gravitational search algorithm (GSA) and sine cosine algorithm (SCA) are used to obtain optimal parameters of PI controller. GSA algorithm is based on the gravity law for Newton while SCA depends on mathematical model based on cosine and sine functions. It is worthy to mention these algorithms have an efficient global search capability. Using MATLAB™ Simulink, model of VSC-HVDC system is presented. This system is exposed to different disturbances for demonstrating its dynamic response. Simulation results exhibit the dynamic response is improved with the optimal gains than that of default ones.","PeriodicalId":214890,"journal":{"name":"2019 Innovations in Power and Advanced Computing Technologies (i-PACT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125461015","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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