Pub Date : 2011-12-01DOI: 10.1109/ICEAS.2011.6147116
D. Singla, P. Sharma
The purpose of this paper is to design a high performance sliding mode controller through the use of a new switching function and Positive Sequence Voltage Detector (PSVD). The controller aims at controlling the source current harmonics, compensating reactive power, and improving power factor. In SMC used, the signum function is replaced by saturation function to smooth out the signal for minimizing chattering effect. By incorporating PSVD, the controller can be used, especially in the case of high voltage distortion or unbalanced input voltage signals. The proposed method is tested with balanced and unbalanced linear/non-linear load.
{"title":"SMC based shunt active harmonic filter for power quality enhancement","authors":"D. Singla, P. Sharma","doi":"10.1109/ICEAS.2011.6147116","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147116","url":null,"abstract":"The purpose of this paper is to design a high performance sliding mode controller through the use of a new switching function and Positive Sequence Voltage Detector (PSVD). The controller aims at controlling the source current harmonics, compensating reactive power, and improving power factor. In SMC used, the signum function is replaced by saturation function to smooth out the signal for minimizing chattering effect. By incorporating PSVD, the controller can be used, especially in the case of high voltage distortion or unbalanced input voltage signals. The proposed method is tested with balanced and unbalanced linear/non-linear load.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126086949","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147077
Pratim Kundu, A. Pradhan
Rotor angle variation during post fault period in a power system leads to power swing. Both stable and unstable swings may cause tripping of distance relays and therefore they are blocked during swinging conditions. The unstable swing if not detected early or dealt properly leads to loss of synchronism among different areas and consequently resulting in catastrophic failures such as blackouts. To avoid such incidents some of the relays placed at strategic locations have to be unblocked. An integrated approach of combining various indices derived from wide area measurement system (WAMS) data using fuzzy logic for ranking the severity of the swing has been proposed. The ranking aids in taking decisions regarding the blocking and unblocking of relays to avoid severe failures. The performances of the indices have been tested on a three-machine nine-bus system using EMTDC/PSCAD and MATLAB.
{"title":"Stability assessment using synchrophasor data","authors":"Pratim Kundu, A. Pradhan","doi":"10.1109/ICEAS.2011.6147077","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147077","url":null,"abstract":"Rotor angle variation during post fault period in a power system leads to power swing. Both stable and unstable swings may cause tripping of distance relays and therefore they are blocked during swinging conditions. The unstable swing if not detected early or dealt properly leads to loss of synchronism among different areas and consequently resulting in catastrophic failures such as blackouts. To avoid such incidents some of the relays placed at strategic locations have to be unblocked. An integrated approach of combining various indices derived from wide area measurement system (WAMS) data using fuzzy logic for ranking the severity of the swing has been proposed. The ranking aids in taking decisions regarding the blocking and unblocking of relays to avoid severe failures. The performances of the indices have been tested on a three-machine nine-bus system using EMTDC/PSCAD and MATLAB.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124728632","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147157
P. Dharmesh, D. Elangovan
This paper proposes a method to obtain a protected voltage gain by employing a protection circuit for the voltage doubler or multiplier circuit in an isolated tyde DC-DC Converter. The entire set up consists of a phase shift converter with a protected bridge/voltage doubler rectifier on the output side. The operating frequency of the phase shift converter is 2025kHz (depending on the requirement of the application) which is high enough to improve the efficiency. Ferrite core transformer is used in place of ordinary air core transformer, which is small in size with number of turns of the transformer is reduced and the overall power density is increased. The doubler circuit consists of electrolytic capacitors, which are rated at 400V in order to comply with IEC65 requirements. This paper proposes an “electrolytic capacitor protection circuit”, which enables the voltage rating of the electrolytics to be reduced to 250V. This circuit results in cost savings of more than 50% in the price of the electrolytic filter capacitors. The circuits were simulated using PSPICE SOFTWARE and the following results were obtained. For an input voltage of 200V, an output of 200V and 400V were obtained in bridge mode and doubler mode respectively.
{"title":"High gain DC-DC converter with protection circuit","authors":"P. Dharmesh, D. Elangovan","doi":"10.1109/ICEAS.2011.6147157","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147157","url":null,"abstract":"This paper proposes a method to obtain a protected voltage gain by employing a protection circuit for the voltage doubler or multiplier circuit in an isolated tyde DC-DC Converter. The entire set up consists of a phase shift converter with a protected bridge/voltage doubler rectifier on the output side. The operating frequency of the phase shift converter is 2025kHz (depending on the requirement of the application) which is high enough to improve the efficiency. Ferrite core transformer is used in place of ordinary air core transformer, which is small in size with number of turns of the transformer is reduced and the overall power density is increased. The doubler circuit consists of electrolytic capacitors, which are rated at 400V in order to comply with IEC65 requirements. This paper proposes an “electrolytic capacitor protection circuit”, which enables the voltage rating of the electrolytics to be reduced to 250V. This circuit results in cost savings of more than 50% in the price of the electrolytic filter capacitors. The circuits were simulated using PSPICE SOFTWARE and the following results were obtained. For an input voltage of 200V, an output of 200V and 400V were obtained in bridge mode and doubler mode respectively.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121677704","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147181
R. Suman, C. Lal, M. Kumar, I. Alam, A. Goswami
FACTS devices can be utilized to increase power transfer capability by reducing system losses and cost of generation. Optimal allocation of TCSC is very much important to get the maximum benefit and their control can significantly affect the operation of the system. Genetic Algorithm is used as the optimization tool to determine the location as well as the parameters of TCSC simultaneously. In this paper both technical and economical benefit arising from the installation of TCSC device with the emphasis on generation cost. The Optimal Power Flow (OPF) calculations and GA based optimization are employed to allocate TCSC device. The allocation objective is based on cost function that includes cost of FACTS devices, the cost of installation and annual maintenance cost, and the cost of both generated active and reactive power. The economic benefits arising from their installation are assessed using NPV and Pay back method. This paper provides the best techno-economic solution for the IEEE - 30 bus systems by minimizing the overall system cost function, which includes generation cost and the investment costs of the FACTS device.
{"title":"Cost-benefit analysis of TCSC installation to power system operation","authors":"R. Suman, C. Lal, M. Kumar, I. Alam, A. Goswami","doi":"10.1109/ICEAS.2011.6147181","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147181","url":null,"abstract":"FACTS devices can be utilized to increase power transfer capability by reducing system losses and cost of generation. Optimal allocation of TCSC is very much important to get the maximum benefit and their control can significantly affect the operation of the system. Genetic Algorithm is used as the optimization tool to determine the location as well as the parameters of TCSC simultaneously. In this paper both technical and economical benefit arising from the installation of TCSC device with the emphasis on generation cost. The Optimal Power Flow (OPF) calculations and GA based optimization are employed to allocate TCSC device. The allocation objective is based on cost function that includes cost of FACTS devices, the cost of installation and annual maintenance cost, and the cost of both generated active and reactive power. The economic benefits arising from their installation are assessed using NPV and Pay back method. This paper provides the best techno-economic solution for the IEEE - 30 bus systems by minimizing the overall system cost function, which includes generation cost and the investment costs of the FACTS device.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131260175","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147151
S. Mishra, Anuj Sharma, G. Panda
Due to growing share of wind power in world's energy consumption, forecasting of the wind power becomes essential for proper utilization. This paper proposes short term wind power forecasting model using complex wavelet transform and neural network. The past wind power values are transferred into real and complex signal; which are further transferred in Wavelet domain signal. These signals are used to predict next hour wind power using neural network. This approach is tested using data from Alberta wind farm.
{"title":"Wind power forecasting model using complex wavelet theory","authors":"S. Mishra, Anuj Sharma, G. Panda","doi":"10.1109/ICEAS.2011.6147151","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147151","url":null,"abstract":"Due to growing share of wind power in world's energy consumption, forecasting of the wind power becomes essential for proper utilization. This paper proposes short term wind power forecasting model using complex wavelet transform and neural network. The past wind power values are transferred into real and complex signal; which are further transferred in Wavelet domain signal. These signals are used to predict next hour wind power using neural network. This approach is tested using data from Alberta wind farm.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122272725","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147173
N. Sahoo, I. Elamvazuthi, N. M. Nor, P. Sebastian, B. Lim
This paper discusses the photovoltaic panel model realization using software package known as Simscape, a simulation platform for the PV cell and panel. The output current and power characteristics of PV model are simulated using the proposed software based on sunlight irradiance and cell temperature characteristics. The simulation and analysis of the dynamics of PV power system is made easy through this package.
{"title":"PV panel modelling using Simscape","authors":"N. Sahoo, I. Elamvazuthi, N. M. Nor, P. Sebastian, B. Lim","doi":"10.1109/ICEAS.2011.6147173","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147173","url":null,"abstract":"This paper discusses the photovoltaic panel model realization using software package known as Simscape, a simulation platform for the PV cell and panel. The output current and power characteristics of PV model are simulated using the proposed software based on sunlight irradiance and cell temperature characteristics. The simulation and analysis of the dynamics of PV power system is made easy through this package.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129616633","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147122
S. Tiwari, Sushma Gupta, Shailendra Jain
This paper include the different type of wind power plant (WPP) are connected with fuel cells. Due to the fluctuating nature of wind power, another energy source should be integrated with the wind turbine to ensure reliable and efficient operation of the power system. In order to solve this problem, fuel cell may be integrated with the wind turbine. The different types of generators are use in WPP like induction generator, synchronous generator and DC generator. The WPP along with the combination of proton exchange merman (PEM) fuel cell has attracted increasing attention in remote area due to low operating temperature, rapid start-up, high power density & simplicity in operation. Hence hybrid wind-fuel cell system increases the efficiency & extends the duration of the available of power. the purpose of this paper to introduce different type of topology of hybrid wind-fuel cell power generation.
{"title":"Different topology of hybrid wind-fuel cell power generation","authors":"S. Tiwari, Sushma Gupta, Shailendra Jain","doi":"10.1109/ICEAS.2011.6147122","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147122","url":null,"abstract":"This paper include the different type of wind power plant (WPP) are connected with fuel cells. Due to the fluctuating nature of wind power, another energy source should be integrated with the wind turbine to ensure reliable and efficient operation of the power system. In order to solve this problem, fuel cell may be integrated with the wind turbine. The different types of generators are use in WPP like induction generator, synchronous generator and DC generator. The WPP along with the combination of proton exchange merman (PEM) fuel cell has attracted increasing attention in remote area due to low operating temperature, rapid start-up, high power density & simplicity in operation. Hence hybrid wind-fuel cell system increases the efficiency & extends the duration of the available of power. the purpose of this paper to introduce different type of topology of hybrid wind-fuel cell power generation.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129840369","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147146
S. Ganguly, N. Sahoo, D. Das
The paper presents a multi-objective planning approach for electrical distribution systems incorporating shunt capacitor banks. In this planning, the number of feeders, feeder routes, and number, locations, and rating of shunt capacitor banks for a distribution system are determined using a multi-objective optimization approach. The objectives considered for this optimization are: (i) total investment cost minimization, (ii) network reliability maximization, (iii) minimization of network power loss, and (iv) minimization of node voltage deviation. The last three objectives are aggregated into a single objective, named as network performance metric. This objective and the first objective are simultaneously optimized to obtain a set of non-dominated solutions. The solution algorithm is Multi-objective particle swarm optimization (MOPSO). Three different MOPSO variants are used and their performances are compared. The result of this planning approach is compared with that of the planning without capacitor banks. The proposed planning approach is validated on a 54-node distribution system planning problem.
{"title":"Multi-objective planning of electrical distribution systems incorporating shunt capacitor banks","authors":"S. Ganguly, N. Sahoo, D. Das","doi":"10.1109/ICEAS.2011.6147146","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147146","url":null,"abstract":"The paper presents a multi-objective planning approach for electrical distribution systems incorporating shunt capacitor banks. In this planning, the number of feeders, feeder routes, and number, locations, and rating of shunt capacitor banks for a distribution system are determined using a multi-objective optimization approach. The objectives considered for this optimization are: (i) total investment cost minimization, (ii) network reliability maximization, (iii) minimization of network power loss, and (iv) minimization of node voltage deviation. The last three objectives are aggregated into a single objective, named as network performance metric. This objective and the first objective are simultaneously optimized to obtain a set of non-dominated solutions. The solution algorithm is Multi-objective particle swarm optimization (MOPSO). Three different MOPSO variants are used and their performances are compared. The result of this planning approach is compared with that of the planning without capacitor banks. The proposed planning approach is validated on a 54-node distribution system planning problem.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"69 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126575936","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147148
S. G. Malla, C. N. Bhende, S. Mishra
In this paper a stand-alone Photovoltaic (PV) systems is presented for water pumping. Solar PV water pumping systems are used for irrigation and drinking water. PV based pumping systems without battery can provide a cost-effective use of solar energy. For the purpose of improving efficiency of the system perturb and observe (P&O) algorithm based Maximum Power Point Tracker (MPPT) is connected to this system. The aim of this paper is to show how to achieve an effective photovoltaic pumping system without battery storage. Results are presented based on different cases of irrigation pumping application and availability of solar irradiance. Simulation results using MATLAB/SIMULINK show that the performance of the controllers both in transient as well as in steady state is quite satisfactory.
{"title":"Photovoltaic based water pumping system","authors":"S. G. Malla, C. N. Bhende, S. Mishra","doi":"10.1109/ICEAS.2011.6147148","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147148","url":null,"abstract":"In this paper a stand-alone Photovoltaic (PV) systems is presented for water pumping. Solar PV water pumping systems are used for irrigation and drinking water. PV based pumping systems without battery can provide a cost-effective use of solar energy. For the purpose of improving efficiency of the system perturb and observe (P&O) algorithm based Maximum Power Point Tracker (MPPT) is connected to this system. The aim of this paper is to show how to achieve an effective photovoltaic pumping system without battery storage. Results are presented based on different cases of irrigation pumping application and availability of solar irradiance. Simulation results using MATLAB/SIMULINK show that the performance of the controllers both in transient as well as in steady state is quite satisfactory.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133226069","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147147
A. M. Parimi, N. Sahoo, I. Elamvazuthi, N. Saad
In this paper, the nonlinear dynamic model of a typical multi-machine power system incorporated with Interline Power Flow Controller (IPFC) has been developed. The oscillation modes with low damping ratio are identified from the eigenvalue analysis of the linearized Phillips-Heffron model. A power oscillation damping controller has been designed for the IPFC using phase compensation technique to enhance the transient stability of the system. Additional power flow controllers have also been incorporated into the system to control the power flow demand in the transmission lines on which the IPFC is connected. The performance of the designed IPFC controllers has been assessed by simulation studies on a multi-machine system for power flow demand control as well as overall power system damping.
{"title":"Transient stability enhancement and power flow control in a multi-machine power system using Interline Power Flow Controller","authors":"A. M. Parimi, N. Sahoo, I. Elamvazuthi, N. Saad","doi":"10.1109/ICEAS.2011.6147147","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147147","url":null,"abstract":"In this paper, the nonlinear dynamic model of a typical multi-machine power system incorporated with Interline Power Flow Controller (IPFC) has been developed. The oscillation modes with low damping ratio are identified from the eigenvalue analysis of the linearized Phillips-Heffron model. A power oscillation damping controller has been designed for the IPFC using phase compensation technique to enhance the transient stability of the system. Additional power flow controllers have also been incorporated into the system to control the power flow demand in the transmission lines on which the IPFC is connected. The performance of the designed IPFC controllers has been assessed by simulation studies on a multi-machine system for power flow demand control as well as overall power system damping.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131453362","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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