查询词典 wind power

Now,the use of wind power is becoming a hot-point during the reacher of renewable power.And many kind of technologies applied to wind power generation are in the ascendant,among which the technology of variable pitch is getting increasing recognition for its characteristic of high-effiiciency and practicability.

目前各种风力发电技术得到迅速发展，变桨风力发电技术和定桨距发电机组相比，因其高效性和实用性越来越受到重视。

The VSCF DFIG wind power generation is transient response proceeding, which is influenced by operation characteristics of generator before and after grid connected. A novel S-Function is adopted to describe the mathematic model of DFIG based on state equation. A complete simulation model of VSCF DFIG wind power generation system based on MATLAB/Simulink and SimPowerSystems is established, which can be used to not only simulate subsystems of no-load operation and generation operation, as well as can be used to but also accurate control parameters of DFIG in simulation. The simulation model have excellent transportability, and can be used DFIG of different power rated if only design relevant controller.

变速恒频双馈电机风力发电是一个受并网前后发电机运行状况影响的暂态过程，利用MATLAB的S-Function编写DFIG的仿真程序，然后结合Simulink和SimPowerSystems工具箱，开发了基于S-Function的空载运行和发电运行的变速恒频双馈电机风力发电子系统模型，在仿真过程中可对双馈电机进行精确控制，然后对其进行了系统整合，本文开发的模型具有可移植性，只要再设计相应的控制器，就可应用于不同功率等级的双馈电机风力发电系统。

Duke Energy entered the wind energy industry in 2007 with the acquisition of Tierra Energy's wind development business. The acquisition of Catamount Energy in 2008 strengthened Duke Energy's position as an emerging leader in wind power.

2007年，杜克能源公司收购Tierra公司的风能发电业务，并由此踏入风电行业。2008年杜克能源公司收购Catamount能源公司，加强了其在风力发电行业新兴领导人的地位。

The impact of parallel operation of wind turbines on power flow is analyzed, in which the squirrel cage induction motors are used as the constant speed wind turbine and the double fed induction motors are used as variable speed wind turbine.

分析了以鼠笼感应电机作为发电机的定速风电机组和以双馈感应电机作为发电机的变速风电机组并网运行对系统潮流的影响，并对不同控制模式下使用双馈感应电机的变速风电机组的电压和无功控制特性进行了比较。

The intermittency of wind seldom creates problems when using wind power to supply a low proportion of total demand, but it presents extra costs when wind is to be used for a large fraction of demand.

在间歇性的风力造成了问题时，很少使用风力发电供应总量中所占比例较低的需求，但它提出了额外的费用时，风力将用于中占有很大比例的需求。

Main products are wind turbine control system which applied to the wind turbines with Megawatt power and wind park management system.

作为科工贸一体化的高科技企业，我们拥有一批优秀的研发，生产，质量管理技术人才及成套技术，并配备有专业的现场调试和维护人员。

We can see it clearly that even average wind speed is the same, when wind direction, overfall and other condition change, the generator set ,especially the gear box is taken quite different changing load with help of blade program of wind power design software.

利用风力机设计软件Bladed程序我们可以很明显地看到(详见图1，图2)：即使在平均风速相同，但随着风向，湍流和其他条件的变化，机组特别是齿轮箱所承受的交变载荷完全不一样。

In the POPF model, wind farm is modeled by the probabilistic wind farm model considering the reactive power-slip characteristic, and the inequality constraints include not only the unit output constraints, the ratio constraints, the voltage constraints and the line current constraints but also the reactive compensation capacity constraints in wind farm and the system climbing capacity constraints per minute. By introducing the NCP function, the KKT conditions of POPF system are transformed equivalently. Based on the transformed nonsmooth nonlinear algebraic equations, the FOSMM is used to determine the POPF model expressed by the numerical characteristic of variables. The model includes nonsmooth functions, so it can be solved by a semismooth Newton-type method based on the subdifferential.

概率最优潮流模型中，风电场采用考虑无功功率—滑加热器差特性的风电概率模型，不等式约束中除了机组出力约束、有载调压变压器变比约束、电压约束和支路电流约束，也考虑了风电场无功补偿容量约束、系统的分钟级爬坡能力约束；使用非线性互补函数将概率最优潮流的KKT条件转化为一组包含有不光滑函数的非线性代数方程组，然后基于一次二阶矩法确定了以待求量的数字特征表示的POPF模型，由于该模型包含不光滑函数，因此采用基于次微分的半光滑牛顿型方加热器法求解。

Along with the enlargement of capacity of wind turbine and the scale of wind farm, the attention is paid to the secure operation of wind power increasingly.

随着风电机组单机容量和风电场规模的增大，风电场的安全运行问题日益受到重视。

And with the enlargement of the wind farm scale, the negative effects of wind power become more and more serious, and turn to be great obstacle of the further utilization of the wind resource.

随着风电场规模的不断扩大，风电特性对电网的负面影响愈加显著，成为制约风电场建设规模的严重障碍。

" I' d like to get some rough idea about music in the baroque ear, please."

请简要介绍一下巴罗克时期的音乐，好吗？

The results showed that the peak latency and pattern of SEPs elicited by electrical needling in LI-l1 and MP were similar. The amplitude of SEPs elicited by electrical needling in LI-l1 was higher than that of MP. There was no obvious SEPs generation when MM was electrical needling.

结果显示，电针刺激曲池穴和其邻近桡侧伸腕长肌运动点诱发性脑电波的波形和波峰时间是类似的，只是穴位的诱发性脑电波波幅较大，而电针刺激非穴位点并没有明显的诱发性脑电位。