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2009 International Conference on Power Engineering, Energy and Electrical Drives最新文献

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Reliability analysis of power substation with common cause failure 变电站共因故障可靠性分析
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915244
Yoong-Tae Byeon, Kiryang Kwon, Jin-O. Kim
{"title":"Reliability analysis of power substation with common cause failure","authors":"Yoong-Tae Byeon, Kiryang Kwon, Jin-O. Kim","doi":"10.1109/POWERENG.2009.4915244","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915244","url":null,"abstract":"The power system need to sustain high reliability due to its complexity and security. The reliability prediction method is usually based on independent failure. However, the common cause failure affects many components simultaneously in a system, and it turns out the system collapse seriously in a wide range. Therefore, to improve the reliability of the power system practically, the analysis using the common cause failure is required. This paper describes the common cause failure modeling combined with independent failure. Using the dynamic fault tree, the incorporated independent failure and common cause failure are proposed and analyzed, and it is applied to the power substation in order to examine the method.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"18 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":"128661750","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}
引用次数: 11
Constant power electronic gear for electrical vehicle 电动汽车用恒功率电子齿轮
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915238
Hugo Pestana, C. Ferreira, H. Ribeiro, Pedro Matos
{"title":"Constant power electronic gear for electrical vehicle","authors":"Hugo Pestana, C. Ferreira, H. Ribeiro, Pedro Matos","doi":"10.1109/POWERENG.2009.4915238","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915238","url":null,"abstract":"This paper presents a power drive circuit for electric vehicles with a buck-boost power converter. The buck-boost converter with a dedicated current control allows achieving an electronic gear for DC motors. With this topology is possible to allow a torque-speed profile that resembles the obtained by a geared manual one but in a continuous manner, meaning that the power value is limited at high speeds but the torque is raised during starting and climbing.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"39 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":"125961656","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}
引用次数: 0
Artificial Neural Networks and regression approaches comparison for forecasting Iran's annual electricity load 人工神经网络和回归方法预测伊朗年电力负荷的比较
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915245
A. Ghanbari, A. Naghavi, S. Ghaderi, M. Sabaghian
{"title":"Artificial Neural Networks and regression approaches comparison for forecasting Iran's annual electricity load","authors":"A. Ghanbari, A. Naghavi, S. Ghaderi, M. Sabaghian","doi":"10.1109/POWERENG.2009.4915245","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915245","url":null,"abstract":"Electrical load forecasting is one of the important concerns of power systems and has been studied from different views. Electrical load forecast might be performed over different time intervals of short, medium and long term. Various techniques have been proposed for short term, medium term or long term load forecasting. In this study we employ Artificial Neural Networks (ANN) and regression (Linear and Log-Linear) approaches for annual electricity load forecasting. This study presents a model that is affected by two economical parameters which are Real-GDP and Population. Using Real-GDP instead of nominal-GDP can provide more accuracy because the effects of inflation are considered in the structure of such model and this will cause the results to be more reliable. To improve forecasting accuracy of the model we apply data preprocessing techniques. Forecasting capability of each approach is evaluated by calculating three separate statistical evaluations of the Root Mean Square Error (RMSE), the Mean Absolute Error (MAE), and the Mean Absolute Percentage Error (MAPE). All evaluations indicate that the accuracy of ANN which is trained with preprocessed data is remarkably better than the other two conventional approaches.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"27 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":"127164565","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}
引用次数: 48
Alternative protection system for Wind turbines with Doubly Fed Induction Generator 双馈感应发电机风力发电机的替代保护系统
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915226
Iker Esandi, Xabier Juankorena, Jesús López, L. Marroyo
{"title":"Alternative protection system for Wind turbines with Doubly Fed Induction Generator","authors":"Iker Esandi, Xabier Juankorena, Jesús López, L. Marroyo","doi":"10.1109/POWERENG.2009.4915226","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915226","url":null,"abstract":"Nowadays, Wind turbines implementing Doubly Fed Induction Generators (DFIG) occupy the largest share of the wind power market. These machines incorporate the benefits of variable speed generators in a cost-effective way but are very sensitive to grid disturbances and especially to voltage dips. To prevent the damages that grid disturbances can cause to the converter, the machines are equipped with a crowbar protection system that short-circuits the rotor. However, during the crowbar activation the rotor converter must be disconnected, so the power generation of the turbine is no longer controlled. In doing so, the crowbar impedes the turbine voltage stabilization required by most new grid regulations. This paper proposes a protection system alternative to the crowbar that allows the turbine to quickly resume normal operation, almost immediately generating reactive power, and hence contributing to the voltage stabilization.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"8 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":"125613870","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}
引用次数: 16
Position control of an 8/6 switched reluctance machine without current sensor 无电流传感器的8/6开关磁阻电机的位置控制
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915206
S. Rafael, P. Branco, A. Pires
{"title":"Position control of an 8/6 switched reluctance machine without current sensor","authors":"S. Rafael, P. Branco, A. Pires","doi":"10.1109/POWERENG.2009.4915206","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915206","url":null,"abstract":"The electrical motion drives are more and more used in various industrial processes. The choice of the motor drive is based on power, speed, precision, and cost requirements. There are many different types of motors for motion drives application. AC and DC motors feature brushed or brushless designs are suitable for a variety of industrial applications. Speed, torque and position control are the most used motion control systems. There are many papers about switched reluctance motor speed control and torque control but few about position control. This paper pretends to contribute for the potentiality of the switched reluctance motor in position application. In the first part it is presented the theoretical concepts for motor shaft position. The second part presents a prototype implementation and experimental results when intermediate position between two poles position alignment are reached.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"18 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":"117262339","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}
引用次数: 3
Network reconfiguration using a genetic approach for loss and reliability optimization in distribution systems 基于遗传方法的配电系统损耗和可靠性优化网络重构
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915219
R. Vitorino, H. Jorge, L. Neves
{"title":"Network reconfiguration using a genetic approach for loss and reliability optimization in distribution systems","authors":"R. Vitorino, H. Jorge, L. Neves","doi":"10.1109/POWERENG.2009.4915219","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915219","url":null,"abstract":"This paper presents a new method to improve reliability and also minimize losses in radial distribution systems (RDS), trough a process of network reconfiguration, using a genetic algorithm approach. The methodology adopted to enhance reliability, uses the Monte Carlo simulation and an historical data of the network such as the level of reliability and the severity of potential contingencies in each branch. The method analyses the RDS in two perspectives. A first perspective of optimization considering no investment, therefore using only the switches presented in the network, and a second perspective of optimization where is given the possibility to place a limited number of tie-switches and thus get better results. Here, the number of tie-switches and the branches that can receive them are defined by a decision agent. The effectiveness of the proposed method is demonstrated through the analysis of a 69 bus RDS.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"1 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":"130437165","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}
引用次数: 7
Design & simulation of a contactless power transmission system with maximum efficiency & soft switching realization of related inverter 高效非接触式输电系统的设计与仿真及相关逆变器的软开关实现
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915248
A. Deihimi, P. G. Khorasani
{"title":"Design & simulation of a contactless power transmission system with maximum efficiency & soft switching realization of related inverter","authors":"A. Deihimi, P. G. Khorasani","doi":"10.1109/POWERENG.2009.4915248","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915248","url":null,"abstract":"A detailed design procedure for a contactless power transmission system with high efficiency is presented in this paper. A phase-shift full-bridge converter is used in order to control output power and adjust frequency precisely at the desired value of resonance to gain soft switching advantages. In addition, it will be discussed how to use performance factor curves of ferrite cores to select the best core for achieving maximum efficiency. Moreover, the methods to obtain system inductance are reviewed in the paper. As a design example, a contactless power transmission system for transmission of 500 W through 1 mm airgap is designed with an efficiency of 98% by applying the described design procedure. The selected core for this example is the ETD core. To validate the described design procedure, the results of examplar design are compared with those obtained from simulations by Matlab/Simulink.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"35 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":"130573049","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}
引用次数: 5
Neural networks based power flow control of the doubly fed induction generator 基于神经网络的双馈感应发电机潮流控制
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915181
O.F. Soares, H. Gonçalves, António P. Martins, A. Carvalho
{"title":"Neural networks based power flow control of the doubly fed induction generator","authors":"O.F. Soares, H. Gonçalves, António P. Martins, A. Carvalho","doi":"10.1109/POWERENG.2009.4915181","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915181","url":null,"abstract":"This paper describes the models of a wind power system, such as the turbine, generator, power electronics converters and controllers, with the aim to control the generation of wind power in order to maximize the generated power with the lowest possible impact in the grid voltage and frequency during normal operation and under the occurrence of faults. The presented work considers a wind power system equipped with the doubly fed induction generator and a vector-controlled converter connected between the rotor and the grid. The paper presents comparative results between proportional-integral controllers and neural networks based controllers, showing that better dynamic characteristics can be obtained using neural networks based controllers.","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":"131440974","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}
引用次数: 6
Advanced simulation concept for interaction of railway grid representation and model power train of AC locomotive 铁路网格表示与交流机车动力系模型交互的先进仿真概念
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915190
R. Bartelt, M. Oettmeier, C. Heising, V. Staudt, A. Steimel
{"title":"Advanced simulation concept for interaction of railway grid representation and model power train of AC locomotive","authors":"R. Bartelt, M. Oettmeier, C. Heising, V. Staudt, A. Steimel","doi":"10.1109/POWERENG.2009.4915190","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915190","url":null,"abstract":"Grid interaction and stability is an important issue for 16.7-Hz single-phase railway applications. A project is set up which aims to develop an overall control scheme for traction vehicles which stabilizes the grid and avoids generating disturbances and excitation. To analyse the full dynamic behaviour on the firm footing of experimental results, a test bench is built. On the one hand the 16.7-Hz single-phase railway grid is modelled — featuring impedance, grid voltage harmonics and pantograph arcing. On the other hand the full power chain of a traction vehicle is modelled. To simulate such complex structures consisting of networks and components described by high-order differential equations and several power-electronic devices with high accuracy and efficiency as well, an advanced simulation concept is needed. One which fulfils the requirements and convincing simulation results of the interaction between modelled grid and loco are presented. The verification is done by measurements.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"12 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":"132212875","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}
引用次数: 17
Use of available phasor measurements for system observability: A case study 使用可用相量测量系统的可观测性:一个案例研究
2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915251
P. S. Castro Vide, F. M. Maciel Barbosa, I. Ferreira
{"title":"Use of available phasor measurements for system observability: A case study","authors":"P. S. Castro Vide, F. M. Maciel Barbosa, I. Ferreira","doi":"10.1109/POWERENG.2009.4915251","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915251","url":null,"abstract":"This paper proposes the use of available PMU measurements for establishing network observability. State estimation is an important EMS application for providing real time, reliable and qualitative information on the system state. The observability analysis is the necessary function of the whole network state estimation. This paper addresses the incorporation of PMU measurements with the purpose of full network observability. The methodology is validated by the results on IEEE 14, 30 and 57 bus test system.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"31 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":"132229723","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}
引用次数: 4
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