Pub Date : 2009-03-18DOI: 10.1109/POWERENG.2009.4915168
J. J. Mesas, L. Sainz, A. Ferrer
The growing presence of discharge lamps in power distribution systems has increased the harmonic distortion in these systems. The paper studies the magnetic ballast discharge lamp modelization with and without harmonic interaction. The supply harmonic voltage influence on lamp behavior is analyzed by Monte Carlo simulation. The results are validated with experimental measurements.
{"title":"Discharge lamp harmonic interaction study by Monte Carlo simulation and experimental measurements","authors":"J. J. Mesas, L. Sainz, A. Ferrer","doi":"10.1109/POWERENG.2009.4915168","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915168","url":null,"abstract":"The growing presence of discharge lamps in power distribution systems has increased the harmonic distortion in these systems. The paper studies the magnetic ballast discharge lamp modelization with and without harmonic interaction. The supply harmonic voltage influence on lamp behavior is analyzed by Monte Carlo simulation. The results are validated with experimental measurements.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116854363","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915250
D. Inácio, S. Inácio, J. Pina, S. Valtchev, M. Neves, J. Martins, A. Leo Rodrigues
In this paper, a poly-phase disc motor innovative feeding and control strategy, based on a variable poles approach, and its application to a High Temperature Superconductor (HTS) disc motor, are presented. The stator windings may be electronically commutated to implement a 2, 4, 6 or 8 poles winding, thus changing the motor's torque/speed characteristics. The motor may be a conventional induction motor with a conductive disc rotor, or a new HTS disc motor, with conventional copper windings at its two iron semi-stators and a HTS disc as a rotor. The conventional induction motor's operation principle is related with the induced electromotive forces in the conductive rotor. Its behaviour, characteristics and modelling through Steinmetz and others theories are well known. The operation principle of the motor with HTS rotor, however, is rather different and is related with vortices' dynamics and pinning characteristics; this is a much more complex process than induction, and its modelling is quite complicated. In this paper, the operation was simulated through finite-elements commercial software (FLUX2D), whereas superconductivity was simulated by the E-J power law. The Electromechanical performance of both motor's computed are compared. Considerations about the systems overall efficiency, including cryogenics, are also discussed.
{"title":"Conventional and HTS disc motor with pole variation control","authors":"D. Inácio, S. Inácio, J. Pina, S. Valtchev, M. Neves, J. Martins, A. Leo Rodrigues","doi":"10.1109/POWERENG.2009.4915250","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915250","url":null,"abstract":"In this paper, a poly-phase disc motor innovative feeding and control strategy, based on a variable poles approach, and its application to a High Temperature Superconductor (HTS) disc motor, are presented. The stator windings may be electronically commutated to implement a 2, 4, 6 or 8 poles winding, thus changing the motor's torque/speed characteristics. The motor may be a conventional induction motor with a conductive disc rotor, or a new HTS disc motor, with conventional copper windings at its two iron semi-stators and a HTS disc as a rotor. The conventional induction motor's operation principle is related with the induced electromotive forces in the conductive rotor. Its behaviour, characteristics and modelling through Steinmetz and others theories are well known. The operation principle of the motor with HTS rotor, however, is rather different and is related with vortices' dynamics and pinning characteristics; this is a much more complex process than induction, and its modelling is quite complicated. In this paper, the operation was simulated through finite-elements commercial software (FLUX2D), whereas superconductivity was simulated by the E-J power law. The Electromechanical performance of both motor's computed are compared. Considerations about the systems overall efficiency, including cryogenics, are also discussed.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128425916","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915228
A. Vahidnia, A. Dastfan, M. Banejad
Harmonics are the most important issues among power quality problems for their significant and mostly unpleasant effects on the entire power system. In order to evaluate the effects of harmonics in the network, first it is necessary to refer to their sources and define the real characteristics of harmonics produced by different load types. In this paper, the loads (consumers) in the city are analyzed. These loads may be in different types, such as, residential, commercial and industrial or combination of them. Some data-loggers have been installed in some chosen MV substations considering the difference in load types approximately for 1 year in a city as a case study. By analyzing the data obtained from the data-loggers, The Daily Harmonic Load Curves (DHLC) have been extracted for the different load types in the city. These curves determine the real characteristics of harmonic loads for further analyses of the network.
{"title":"Determination of harmonic load characteristics in distribution networks of cities","authors":"A. Vahidnia, A. Dastfan, M. Banejad","doi":"10.1109/POWERENG.2009.4915228","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915228","url":null,"abstract":"Harmonics are the most important issues among power quality problems for their significant and mostly unpleasant effects on the entire power system. In order to evaluate the effects of harmonics in the network, first it is necessary to refer to their sources and define the real characteristics of harmonics produced by different load types. In this paper, the loads (consumers) in the city are analyzed. These loads may be in different types, such as, residential, commercial and industrial or combination of them. Some data-loggers have been installed in some chosen MV substations considering the difference in load types approximately for 1 year in a city as a case study. By analyzing the data obtained from the data-loggers, The Daily Harmonic Load Curves (DHLC) have been extracted for the different load types in the city. These curves determine the real characteristics of harmonic loads for further analyses of the network.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127140115","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915150
Xia Mingchao, W. Mingli
A scheme of fault location using traveling wave theory for electric railway traction system of Jing-Jin Dedicated Passenger Line (JJDPL) in China is presented. Considering the system structure and line style of JJDPL, characters of different types of traveling wave fault location methods are analyzed, and a hybrid scheme is formed. Simulation results of JJDPL prove that the scheme is suitable for transient and permanent faults, and can be used in engineering project.
{"title":"Traveling wave fault location scheme for Jing-Jin Dedicated Passenger Line electric railway traction system","authors":"Xia Mingchao, W. Mingli","doi":"10.1109/POWERENG.2009.4915150","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915150","url":null,"abstract":"A scheme of fault location using traveling wave theory for electric railway traction system of Jing-Jin Dedicated Passenger Line (JJDPL) in China is presented. Considering the system structure and line style of JJDPL, characters of different types of traveling wave fault location methods are analyzed, and a hybrid scheme is formed. Simulation results of JJDPL prove that the scheme is suitable for transient and permanent faults, and can be used in engineering project.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129003919","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915224
Mélissa Dondas, Firas Alkhalil, P. Degobert, F. Colas, B. Robyns
The minimization of the production costs and the consumption of the electricity are major stakes in the company strategy led by the specialists of the energy sector. This paper describes the research works on the supervision of a hybrid power plant. This paper deal with conceiving and in overseeing a hybrid multi sources system with Distributed Generators associating an existing photovoltaic power plant with a power plant of small multi-cogeneration hatch in order to, first, mitigate the irregularity of the photovoltaic sources, and in a second time, to participate in the ancillary service during the daily points thanks to a management and an appropriate supervision. The main objective is the optimization of the cogeneration system fuel consumption. This work solves a Unit Commitment Problem which consists to define the organization of starting / extinction of every power plant as well as its production over all the period considered to satisfy constraints at a lower cost. These constraints, besides the satisfaction of the load's demand, take into account the dynamics of every sub-system.
{"title":"Supervision of a hybrid system based on photovoltaic arrays and supercapacitors","authors":"Mélissa Dondas, Firas Alkhalil, P. Degobert, F. Colas, B. Robyns","doi":"10.1109/POWERENG.2009.4915224","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915224","url":null,"abstract":"The minimization of the production costs and the consumption of the electricity are major stakes in the company strategy led by the specialists of the energy sector. This paper describes the research works on the supervision of a hybrid power plant. This paper deal with conceiving and in overseeing a hybrid multi sources system with Distributed Generators associating an existing photovoltaic power plant with a power plant of small multi-cogeneration hatch in order to, first, mitigate the irregularity of the photovoltaic sources, and in a second time, to participate in the ancillary service during the daily points thanks to a management and an appropriate supervision. The main objective is the optimization of the cogeneration system fuel consumption. This work solves a Unit Commitment Problem which consists to define the organization of starting / extinction of every power plant as well as its production over all the period considered to satisfy constraints at a lower cost. These constraints, besides the satisfaction of the load's demand, take into account the dynamics of every sub-system.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123272513","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915212
M. A. Abido, N. A. Al-Ali
This paper presents a multiobjective differential evolution (MODE) based approach to solve the optimal power flow (OPF) problem. OPF problem has been treated as a true multiobjective constrained optimization problem. Different objective functions and different operational constraints have been considered in the problem formulation. A clustering algorithm is applied to manage the size of the Pareto set. Also, an algorithm based on fuzzy set theory is used to extract the best compromise solution. Simulation results on IEEE-30 bus test system show the effectiveness of the proposed approach in solving true multi-objective OPF and also finding well distributed Pareto solutions.
{"title":"Multi-objective differential evolution for optimal power flow","authors":"M. A. Abido, N. A. Al-Ali","doi":"10.1109/POWERENG.2009.4915212","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915212","url":null,"abstract":"This paper presents a multiobjective differential evolution (MODE) based approach to solve the optimal power flow (OPF) problem. OPF problem has been treated as a true multiobjective constrained optimization problem. Different objective functions and different operational constraints have been considered in the problem formulation. A clustering algorithm is applied to manage the size of the Pareto set. Also, an algorithm based on fuzzy set theory is used to extract the best compromise solution. Simulation results on IEEE-30 bus test system show the effectiveness of the proposed approach in solving true multi-objective OPF and also finding well distributed Pareto solutions.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127738013","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915151
Li Xiaocong, K. Lingyi, Liao Liying, Li Bo, Wang Zhongyong
A mathematic model of battery energy storage system (BESS) and integrated load model are built, and a multi-index nonlinear coordinated control scheme for the system is proposed. As a new FACTS facility, BESS can regulate active power and reactive power of the power bus synchronously. Simulation results show that BESS has the advantage of availably reducing the influence of the power bus subjected to a disturbance on load voltage and active power. It can enhance the control accuracy of output variables and voltage stability, improve the power quality of load. With the ability of BESS, the dynamic characteristics of load voltage and active power can be controlled more smoothness, and the responses of the system is more speediness.
{"title":"Improvement of power quality and voltage stability of load by battery energy storage system","authors":"Li Xiaocong, K. Lingyi, Liao Liying, Li Bo, Wang Zhongyong","doi":"10.1109/POWERENG.2009.4915151","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915151","url":null,"abstract":"A mathematic model of battery energy storage system (BESS) and integrated load model are built, and a multi-index nonlinear coordinated control scheme for the system is proposed. As a new FACTS facility, BESS can regulate active power and reactive power of the power bus synchronously. Simulation results show that BESS has the advantage of availably reducing the influence of the power bus subjected to a disturbance on load voltage and active power. It can enhance the control accuracy of output variables and voltage stability, improve the power quality of load. With the ability of BESS, the dynamic characteristics of load voltage and active power can be controlled more smoothness, and the responses of the system is more speediness.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134241722","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915247
J. Bacher
There are various methods to determine the efficiency of three phase induction machines. But all of them have in common that they are to inaccurate or they are impracticable. In this paper the machine efficiency will be derived from start up data. For that purpose the variation with time of all stator currents and all stator voltages have to been measured. Normally it isn't possible to mount a speed sensor on the machine. For this reason only the speed at the end of the start up can be determined. Practical results with standard three phase induction machines with different power ranges from 3 kW up to 500 kW are presented.
{"title":"Online efficiency diagnostic method of three phase asynchronous machines","authors":"J. Bacher","doi":"10.1109/POWERENG.2009.4915247","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915247","url":null,"abstract":"There are various methods to determine the efficiency of three phase induction machines. But all of them have in common that they are to inaccurate or they are impracticable. In this paper the machine efficiency will be derived from start up data. For that purpose the variation with time of all stator currents and all stator voltages have to been measured. Normally it isn't possible to mount a speed sensor on the machine. For this reason only the speed at the end of the start up can be determined. Practical results with standard three phase induction machines with different power ranges from 3 kW up to 500 kW are presented.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134526454","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915167
J. J. Mesas, L. Sainz, A. Ferrer
The paper examines the deterministic and stochastic behavior of three-phase uncontrolled rectifiers and three-phase 6-pulse rectifiers from extensive simulations performed by a MATLAB customized program. The study is based on non-linear load invariants and analyzes the harmonic current magnitudes and phase angles of these loads. Invariants are the minimum number of parameters characterizing non-linear loads univocally. Two practical laboratory examples are presented to illustrate the numerical study.
{"title":"Deterministic and stochastic study of the three-phase non-linear load behavior","authors":"J. J. Mesas, L. Sainz, A. Ferrer","doi":"10.1109/POWERENG.2009.4915167","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915167","url":null,"abstract":"The paper examines the deterministic and stochastic behavior of three-phase uncontrolled rectifiers and three-phase 6-pulse rectifiers from extensive simulations performed by a MATLAB customized program. The study is based on non-linear load invariants and analyzes the harmonic current magnitudes and phase angles of these loads. Invariants are the minimum number of parameters characterizing non-linear loads univocally. Two practical laboratory examples are presented to illustrate the numerical study.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115589538","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915230
T. Ghennam, E. Berkouk, B. Francois
This paper presents a general modeling and an experimental validation of a Doubly Fed Induction Generator (DFIG) based Wind Conversion System (WCS). The Wind Conversion System has been briefly presented. Then, the d q control of the Grid Side Converter (GSC) has been detailed theoretically. Moreover, the decoupled active and reactive powers control of the DFIG has been presented. The last is carried out by using the Rotor Side Converter (RSC) to control the direct and quadrature components of the DFIG rotor currents. Both GSC and RSC control algorithms are implemented on a DSPACE board plugged in a Dell PC. The performance of the DFIG control is verified by experimental results.
{"title":"Modeling and control of a Doubly Fed Induction Generator (DFIG) based Wind Conversion System","authors":"T. Ghennam, E. Berkouk, B. Francois","doi":"10.1109/POWERENG.2009.4915230","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915230","url":null,"abstract":"This paper presents a general modeling and an experimental validation of a Doubly Fed Induction Generator (DFIG) based Wind Conversion System (WCS). The Wind Conversion System has been briefly presented. Then, the d q control of the Grid Side Converter (GSC) has been detailed theoretically. Moreover, the decoupled active and reactive powers control of the DFIG has been presented. The last is carried out by using the Rotor Side Converter (RSC) to control the direct and quadrature components of the DFIG rotor currents. Both GSC and RSC control algorithms are implemented on a DSPACE board plugged in a Dell PC. The performance of the DFIG control is verified by experimental results.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117172115","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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