输出特性函数对风力机容量系数计算的影响

Influence of Output Characteristic Functions on the Capacity Factor Calculation of Wind Power Generator

传统风力机容量系数的计算由于风力机输出特性函数的选取不同有着较大误差。为了准确进行风力机容量系数的计算,文中结合实际情况对输出特性函数的选择加以考虑,分别采用3种输出特性函数模型即线性函数、二次函数和三次函数,选取我国云南省红河作为风速观测点,用5种常见风力机进行实例计算,并对结果对比分析。仿真表明:风力机实际风速-功率关系曲线分布在很宽范围内,输出特性函数的选取对风力发电机容量系数计算结果影响很大。本计算分析结果对风力发电具有一定的理论意义和实用价值。

The traditional capacity factor calculation methods differ from each other due to the different output charac- teristic functions of the wind power generator. In order to accurately calculate the capacity factor of the wind power gen- erator, the different selection of output characteristic functions according to the actual situation is taken into account, respectively adopt three kinds of output characteristic function, namely, linear function, quadratic function and cubic function. Taking the area of Honghe in Yunnan Province as the wind speed observation point, five kinds of common wind power generator are calculated and the results are compared and analysed. The simulation shows that the actual wind speed-power relation curve varies within a relatively wide range, and the different output characteristic functions in the capacity factor calculation of the wind power generator lead to hugely different calculations. The above calcula- tion and analysis is of certain theoretical significance and practical value for the wind power generation.