有效风速

基于WLS-SVM的变速风力机有效风速估计

Effective Wind Speed Estimation for Variable Speed Wind Turbines Based on WLS-SVM

有效风速的精确估计可以提高风力发电机组的控制性能。

Accurate estimation of wind speed can improve control capabilities of wind turbines .

通过分析该区域各风电场的风速及出力特点，提出区域有效风速和区域风电功率的概念。

Through the analysis of the area of each wind speed and output characteristic , this paper puts forward regional effective wind speed and regional wind power concept .

带有小容量蓄电池和逆变器的风力发电泵水系统起动和运行性能良好，蓄电池主要是满足水泵起动和无有效风速时供水的需要。

The performance of the system with the battery and inverter is good at starting and operating , the function of the battery is satisfies the pump starting and guarantees the water the supply .

针对风速仪测量风速的不准确性，本文将大型变速变桨距风力机的有效风速估计看作一个标准的软测量问题，提出基于支持向量机的有效风速软测量。

The estimation of effective wind speed of large-scale variable speed variable pitch wind turbine is regarded as a standard soft sensor problem to aim at measuring inaccuracy of an anemometer . Soft sensor of effective wind speed is proposed based on support vector machine ( SVM ) .

仿真结果与误差分析结果表明基于神经网络的组合预测模型可有效提高风速预测精度，证明了该模型的可行性，为风速预测精度的提高提供了进一步的思路。

The results of simulation and error analysis show that the combination forecasting model based on neural network can effectively improve the prediction accuracy of wind speed forecasting , and proved the feasibility of the model , and provides some ideas for further promotion of forecasting accuracy for wind speed .

利用TOPEX卫星高度计和日本气象厅浮标观测资料，对东中国海的有效波高和风速进行比较，分析了卫星高度计资料的有效性。

The data of the significant wave height ( SWH ) and the wind speed from TOPEX satellite altimeters are compared with the data from the buoy and the validity of data from TOPEX is analyzed .

采用多风电场接入电网典型拓扑图验证了所提出了模型可以有效的抑制风速波动带来的电压波动，同时可以减少离散设备的调节次数达到经济性的目的。

At last , a typical topology of multiple wind farms integrating to the grid is used to testify the proposed model , which can control the voltage fluctuation caused by the wind speed fluctuation and decrease the switching times of discrete devices , obtaining the economic objective .

将Copula函数应用到近海工程中，用其建立了最大有效波高和最大风速的联合分布函数并检验，结果表明：Copula函数能够比较好的模拟实际的联合概率分布。

Using copula method to ocean engineering , we establish the joint distribution function of the maximum wave height and the wind velocity and check it , the results show that the copula-constructed joint distribution function can well fit the observed data .

RS-SVM能够有效减少风电场风速预测的条件属性，降低了噪声数据的影响，实现风速数据变量间的非线性映射关系，提高了模型的运行速度和预测精度。

RS-SVM can reduce the forecast wind conditions for wind properties effectively , and the impact of the noise data , realize non-linear mapping relationship of variable wind speed data , as well as improve the operating speed and prediction accuracy of the model .

该方法有效地提高了风速预测的精度。

With above-mentioned method the wind speed forecasting accuracy was effectively improved .

该测试台首次在实验室测试技术中模拟天空有效温度及室外风速等因素，以反映这些因素对覆盖材料保温性能的影响。

It is the first time to simulate the sky temperature and wind velocity outside of greenhouse in the laboratory to measure their infections to the thermal properties of the covering materials .

试验结果表明，WT&LS-SVM相结合的模型的预测相对其他模型效果较好，从而有效地减轻了风速波动对整个电网的不利影响。

Test results show that the effect of WT & LS-SVM model is best , Consequently the accurate predicting of the wind speed effectively lighten the adverse effect to the whole power grid by the wind speed fluctuation .

星载雷达高度计能够对海面高度、有效波高和海面风速进行测量，这些数据进一步反演的结果可以应用于海洋地球物理学、海洋动力学、海洋气候与环境及海冰监测。

Spaceborne radar altimeter can measure the sea surface height , significant wave height and sea surface wind , and it can also be used in fields of Geophysics , Oceanics , Ocean Climatology , sea ice monitor , and so on .

全省有效风能密度Wc≥150W/m~2，有效风速时间Te≥4000小时的地区约占总面积的50%，达到全国风能较丰富区的水平。

There are about 50 % area in the Province which We ( Density of wind energy ) > 150W / m ~ 2 and Te ( Time of effective wind speed ) > 4000Hr . Yunnan is rich in wind energy resource .