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所属行业:电力、热力、燃气及水生产和供应业

  • 14911.电迁移域汽车2电网标准

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    The domain of electromobility extends the topic of the Smart Grid by another large consumer, but also adds storage possibilities. Therefore it is necessary to create a new infrastructure of loading points. The communication is not limited between loading points and the vehicle, but there is also a communication between loading point and the distribution network. Additionally there are many different scenarios possible, whereas the loading point also communicates with EMS/DMS. These chapter addresses the aforementioned points and give further information and possible solutions in terms of communication standards
    关键词:智能电网;DMS通信;EMS;电动汽车
  • 14912.通过小组交互的方式发掘多数据源

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    Medical researchers seek to identify and predict profit (or effectiveness) potential in a new medicine B against a specified disease by comparing it to an existing medicine A,which has been used to treat the disease for many years,called medicine assessment.Applying traditional data mining techniques to the medicine assessment,one can discover patterns,such as A.X=a → B.Y=b,which are identified at the attribute-value level.These patterns are useful in predicting associated behaviors at the attribute-value level.However,to evaluate B against A,we have to obtain globally useful relations between B and A at an attribute level.Therefore,this paper proposes a group interaction approach for multiple data source discovery.Group interactions include,such as rules,differences,and links between datasets.These group interactions are discovered at the attribute level.For example,R(A.X,B.Y),where R is a relationship,or a predication.Some examples are presented for illustrating the use of the group interaction approach.
    关键词:电力系统;数据挖掘;;多数据源挖掘;互动
  • 14913.VirydCS8风力发电机噪音测试报告

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. Several turbines were selected for testing at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center (NWTC) as a part of the Small Wind Turbine Independent Testing project. Acoustic noise testing is one of up to five tests that may be performed on the turbines. Other tests include duration, safety and function, power performance, and power quality. Viryd Technologies, Inc. of Austin, Texas, was the recipient of the DOE grant and provided the turbine for testing.
    关键词:风能;风力发电机;声学噪声发生器;噪声测量
  • 14914.对于SWIFT的风力发电机的持续时间测试报告

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. The project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. Several turbines where selected for testing at the National Wind Technology Center (NWTC) as a part of the Small Wind Turbine Independent Testing project. Duration testing was one of up to five tests that could be performed on the turbines. Other tests included power performance, safety and function, noise, and power quality. Cascade Engineering, of Grand Rapids, Michigan, distributor of the Renewable Devices SWIFT turbine in North America, was the recipient of the DOE grant and provided the turbine for testing. The test equipment included a grid-connected SWIFT wind turbine mounted on a 13.7 meter (45-ft) free standing monopole. The system was installed by the NWTC Site Operations group with guidance and assistance from Cascade Engineering.
    关键词:风能;风力发电机;时间试验;电能质量;可再生能源
  • 14915.研究具有分布式发电综合负荷模型的电力系统的稳定性

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    With different element models and parameters in power system,the transient stability analysis results are also different,especially the model of generator and load.Based on the actual parameters of Hunan power grid,this paper builds the synthesis load rnodel of the distribution network with small hydropower considered,and then the Hunan simulation network can also be got.Using PSASP,analyses the transient stability of Hunan power system with distributed small hydropower under different operation modes systematically and comprehensively.Through an overall check of the stability level in each Hunan area,and then compared with the analysis results of Hunan power grid based on the currently used load model,the influences of the distributed small hydropower on the safe and stable operation of the large power network are summarized.
    关键词:电力系统;分布式发电;小水电;暂态稳定;负荷建模;PSASP
  • 14916.叶片测试设备的开发和商业化.合作研究和开发总结报告.CRADA编号:CRD-09-346

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    Blade testing is required to meet wind turbine design standards, reduce machine cost, and reduce the technical and financial risk of deploying mass-produced wind turbine models. NREL's National Wind Technology Center (NWTC) in Colorado is the only blade test facility in the U.S. capable of performing full-scale static and fatigue testing of multi-megawatt-scale wind turbine blades. Rapid growth in wind turbine size over the past two decades has outstripped the size capacity of the NWTC blade test facility leaving the U.S. wind industry without a suitable means of testing blades for large land-based and offshore turbines. This CRADA will develop and commercialize testing technologies and test equipment, including scaling up, value engineering, and testing of equipment to be used at blade testing facilities in the U.S. and around the world.
    关键词:风能;风电;风力涡轮机;涡轮叶片
  • 14917.太阳能项目规划中基于Web的应用程序映射

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    Determining economically viable locations for solar energy projects depends on many factors, including the level of the solar energy resource, land ownership and use, potential environmental impacts, and grid connectivity. This forum session will highlight public and freely accessible Web-based mapping applications sponsored by the U.S. Department of Energy (DOE) to aid in analyzing solar energy project siting decisions. We will discuss each of the Web applications and their associated projects and then demonstrate the tools.
    关键词:太阳能;环境影响;电网连接;土地利用
  • 14918.基于同步相量测量的风电厂惯量估测

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    The total inertia stored in all rotating masses that are connected to power systems, such as synchronous generations and induction motors, is an essential force that keeps the system stable after disturbances. Typically, inertias respond to disturbances voluntarily, without any control actions; however, several types of renewable generation, particularly those with power electronic interfaces, have an inertial response governed by a control function. To ensure bulk power system stability, there is a need to estimate the equivalent inertia available from a renewable generation plant. An equivalent inertia constant analogous to that of conventional rotating machines can be used to provide a readily understandable metric.
    关键词:风力发电站;发电机;转动惯量;电力系统;可再生能源;
  • 14919.即将到来的四人清洁能源技术革命

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    This report focuses on four technology revolutions that are here today. In the last five years they have achieved dramatic reductions in cost1 and this has been accompanied by a surge in consumer, industrial and commercial deployment. Although these four technologies still represent a small percentage of their total market (e.g. electricity, cars and lighting), they are growing rapidly. The four key technologies this report focuses on are: Onshore wind power; Polysilicon photovoltaic modules; LED lighting; and Electric vehicles.
    关键词:风能;太阳能;风力发电;太阳能发电
  • 14920.用于智能电网系统的选择测量装置的能量流失比较分析

    [电力、热力、燃气及水生产和供应业] [2014-07-18]

    This article provides information on smart grid and smart measurement systems with a special focus on the advantages of their implementation as well as concerns present at the stage of design and component selection. The tests conducted on a selected group of measurement devices used in smart grid systems made it possible to compare power losses characteristic for these devices. In the analysis presented below, both classic inductive meters and electronic meters with various communication modems were used.
    关键词:智能电网;智能计量系统;电子仪表;调制解调器
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