2009 International Conference on Power Engineering, Energy and Electrical Drives最新文献_第6页

CO2. A new factor to be considered on the design of electrical distribution grids 二氧化碳。配电网设计中应考虑的一个新因素

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915259

P. Casals, X. Granados, R. Bosch, J.A. Martinez

{"title":"CO2. A new factor to be considered on the design of electrical distribution grids","authors":"P. Casals, X. Granados, R. Bosch, J.A. Martinez","doi":"10.1109/POWERENG.2009.4915259","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915259","url":null,"abstract":"Traditionally, the design of the primary undergrounded circuits for electrical distribution has been based on technical exploitation criteria, as load capacity, reliability, service quality, losses, and economical concerns as installation cost, being so achieved a compromise which minimizes the investment cost on the basis of optimizing the cable section. This procedure maintains its validity from the technical point of view but, nowadays, a new environmental and economical concern should be taken in account in order to determinate the optimum section of an undergrounded cable. This new factor is just the emission of greenhouse effect gasses, as CO2, consequence of the primary source of energy used in the electrical energy production. The ecological impact of these emissions is being increasing its relevance as increases the social conscience on environmental concerns, in particular, since the signature of the Kyoto Agreement. In this work, we present a designing method which considers the part of generation of energy necessary to cover the losses in the undergrounded distribution lines, and includes the cost of the CO2 emissions in the computation of the optimum section of the cable. It is concluded that by increasing the section in such a way, a relevant amount of the Joule losses can be saved in comparison to that produced by the cross section obtained by a classical procedure. The investment excess could be paid back quickly by avoiding administrative fines and by selling the corresponding emission rights.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"331 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":"122842965","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

Modeling for computer simulation as a tool for the teaching of transient power systems 计算机仿真建模作为暂态电力系统教学的工具

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915232

L. S. Martins, D. Costa, J. Martins, V. Pires

{"title":"Modeling for computer simulation as a tool for the teaching of transient power systems","authors":"L. S. Martins, D. Costa, J. Martins, V. Pires","doi":"10.1109/POWERENG.2009.4915232","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915232","url":null,"abstract":"One of the most important issues on the power system course is the study of the transient power systems. However, due to the complexity of the power systems networks, for an effective instruction of this topic it is required to use a computed simulation environment to provide a complement to analytical methods. Therefore, a methodology for the modeling of power systems on the transient analysis using a MATLAB/Simulink program is proposed. This methodology allows producing voltage and current transients that correspond to fault events, instabilities and the introduction of power electronics equipments in the power systems. Furthermore, this also allows students take advantage of the mathematical models they have derived to perform the desired simulation. Since state space models are used, this simulation tool is useful to study the transient phenomena and easier to compare with power systems laboratory results. So, students can understand how a simulation program have been developed, their capabilities and limitations. Several illustrative examples will be presented in order to clearly show the proposed methodology.","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":"117146185","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

Impact of Plug-in Hybrid Electric Vehicles in the Portuguese electric utility system 插电式混合动力汽车对葡萄牙电力系统的影响

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915184

C. Camus, Carla Silva, Tiago L. Farias, J. Esteves

{"title":"Impact of Plug-in Hybrid Electric Vehicles in the Portuguese electric utility system","authors":"C. Camus, Carla Silva, Tiago L. Farias, J. Esteves","doi":"10.1109/POWERENG.2009.4915184","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915184","url":null,"abstract":"This research paper analyzes the potential impacts of the Plug-in Hybrid Electric Vehicles (PHEV) on the Portuguese electric consumption profile. The plug-in vehicles will affect utility operations by adding additional electricity demand. There has generally been the expectation that the grid will not be greatly affected by the use of these vehicles, because the recharging would only occur during off-peak hours. Several scenarios of PHEVs' penetration are studied considering the grid-for-vehicle (G4V) energy transferring as a primary approach. Depending on the power level, timing, and duration of the PHEV connection to the grid, there could be a wide variety of impacts on grid constraints, capacity needs and emissions generated. In a strong penetration scenario, if many households charge their PHEVs over the same time period, especially if it is when the owners first return home and the domestic consumption is increased, then the peak may be higher than the utility expects. Evaluating the potential impacts that different charging scenarios can have in the demand profile is important so that the distribution utility and regulator understand the problems involved and anticipate ideas that will better optimize the whole system in the future.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"106 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":"117345513","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: 70

The design and optimization of a photovoltaic tracking mechanism 光伏跟踪机构的设计与优化

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915246

C. Alexandru

引用次数: 22

Drum and disc type hysteresis machines with superconducting rotors 带超导转子的鼓式和圆盘式磁滞机

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915207

A. Rodrigues

引用次数: 11

Short-term load forecasting using information obtained from low voltage load profiles 利用从低压负荷曲线获得的信息进行短期负荷预测

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915229

J. Sousa, L. Neves, H. Jorge

引用次数: 10

Electric Vehicles and their impact to the electric grid in isolated systems 电动汽车及其对孤立系统中电网的影响

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915218

P. Kadurek, C. Ioakimidis, P. Ferrão

{"title":"Electric Vehicles and their impact to the electric grid in isolated systems","authors":"P. Kadurek, C. Ioakimidis, P. Ferrão","doi":"10.1109/POWERENG.2009.4915218","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915218","url":null,"abstract":"Energy systems are frequently based on imported fossil fuels, and this is a problem in different dimensions including, the environmental, the economic and the security of supply, the latter being particularly relevant for any isolated system, like Islands. Renewable energy is regarded as a solution to this problem, particularly considering its transformation in electricity but this does not include the impact of the transportation sector, which represents a significant component of the imported fuels consumption. The other main limitations associated to renewable electricity consists on the need to increase the storage capacity that might attenuate the effect of renewable energy sources intermittence and disparity between supply and demand. In both these main problems associated with renewable energy management, the Plug-in Electric Vehicles (EV) could be a part of the solution in that the use of the vehicle to grid (V2G) technology can provide storage of electric energy during low demand times and use it to match the demand in peak hours and/or to avoid fossil fuel consumption. However, could the large scale EV penetration lead to increasing the fraction of electricity from renewable? Is the usage of EV batteries like as a storage system truly the best solution? Is the EV a better solution for the vehicle's owner than the internal combustion vehicle from an economical point of view? This paper analyses a case study in the Island of São Miguel in Azores, where energy systems modeling is used to assess how far large scale EV penetration may lead to increasing the potential for the use of renewable electricity, and discusses the possible revenues for EV owners from providing vehicle to grid power.","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":"125257716","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: 80

High power supercapacitor's solutions for reliable power supply 大功率超级电容器的可靠供电解决方案

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915262

A. Belyakov, D. Sojref

{"title":"High power supercapacitor's solutions for reliable power supply","authors":"A. Belyakov, D. Sojref","doi":"10.1109/POWERENG.2009.4915262","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915262","url":null,"abstract":"Modern manufacturing lines are very sensible to power quality disturbances whereas voltage disturbances have been clearly identified as major problems to sophisticated continuous-process-based industries. Topic of power quality is also of crucial importance for the widespread application of renewables and deep penetration of energy sources of distributed power generation. Due to the insufficient ability of batteries to absorb power surges and spikes and to deliver high energy bursts, batteries based uninterruptible power supply systems (UPS) are simply purely suited for short-term bridging by power drop or spike compensation. To handle power surges and short-term power outages the energy market needs supercapacitors with their significant benefits in power- and peak-assist. Supercapacitors are reliable, maintenance-free, short-time power source with long lifespan and are suitable to avoid the effect of voltage twist and of electrical noise or to buffer short-term outages on the power grid. Some fields of application as well as design of supercapacitor based systems have been presented taking into account specific technical requirements on power quality systems.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"5 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":"115883224","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: 9

On the modeling of poly-phase electric machines through Vector-Space Decomposition: Numeric application cases 基于矢量空间分解的多相电机建模:数值应用实例

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915235

A. Tessarolo

引用次数: 12

Multi-index nonlinear coordinated control for battery energy storage system and generator excitation 蓄电池储能系统与发电机励磁的多指标非线性协调控制

2009 International Conference on Power Engineering, Energy and Electrical Drives Pub Date : 2009-03-18 DOI: 10.1109/POWERENG.2009.4915172

Li Xiaocong, K. Lingyi, Liao Liying, Li Bo, Wang Zhongyong

引用次数: 2