IEC 61400-12-5:20 22规定了评估拟议电力性能测量现场障碍物和地形变化重要性的程序，并适用于连接到电力网络的所有类型和尺寸的风力涡轮机的性能测试，如IEC 61400系列其他部分所述。该程序适用于特定位置的特定风力涡轮机的性能评估。 IEC 61400-12-5的第一版是结构修订的一部分，取消并取代了性能标准IEC 61400-12-1:20 17和IEC 61400-12-2:20 13。结构修订版不包含与IEC 61400-12-1:20 17和IEC 61400？12？2:20 13，但与风测量、场地校准测量以及障碍物和地形评估相关的部分已被提取到单独的标准中。

IEC 61400-12-5:2022 specifies the procedures for assessing the significance of obstacles and terrain variations on a proposed power performance measurement site and applies to the performance testing of wind turbines of all types and sizes connected to the electrical power network as described in other parts of the IEC 61400 series. The procedure applies to the performance evaluation of specific wind turbines at specific locations.
This first edition of IEC 61400-12-5 is part of a structural revision that cancels and replaces the performance standards IEC 61400-12-1:2017 and IEC 61400-12-2:2013. The structural revision contains no technical changes with respect to IEC 61400-12-1:2017 and IEC 61400？12？2:2013, but the parts that relate to wind measurements, measurement of site calibration and assessment of obstacle and terrain have been extracted into separate standards.