海洋能发电装置室内试验的测量不确定度评定

为完善我国海洋能发电装置室内试验的量值溯源和量值传递,提高实验室测量数据的科学性和严谨性,保障海试工作的顺利开展,文章根据相关国际指南和标准,以潮流能发电装置模型能量俘获效率的室内试验为例,研究测量不确定度的评定方法。研究结果表明:根据潮流能发电装置模型能量俘获效率的计算公式,其测量不确定度评定的分量包括叶轮半径、水流速、水密度以及扭矩仪扭矩和转速;分别计算各分量的标准不确定度并进行合成,最终得出俘获效率的分散区间;该方法可为海试阶段样机的测量不确定度评定奠定基础。

The Evaluation of Uncertainty Measurement on Tidal Current Energy Converter in Laboratory Tests

In order to improve the traceability and transmission of the value on the laboratory test of the ocean power generation devices in China,and improve the scientificity and rigor of the laboratory measurement data,ensure the smooth development of the sea test work,this paper took the laboratory test of the energy capture efficiency of the model of tidal power generation devices as an example,based on the relevant international guidelines and standards,studied the measure method of the uncertainty.The results showed that according to the formula for calculating the energy capture efficiency of the model of tidal current power generation device,the uncertainty of measurement included impeller radius,water velocity,water density,torque and rotational speed of the torque meter.The standard uncertainty of each component was calculated and synthesized respectively,finally the dispersion region of the capture efficiency was obtained.This method could lay a foundation for the uncertainty evaluation of the prototype in the sea trial stage.