计及电力网络输入导纳在特定频段内响应特性的频率相关网络等值(frequency dependent network equivalent，FDNE)方法目前已广泛应用于电力系统电磁暂态仿真外部系统等值研究中。然而，FDNE法是一种基于线性时不变网络的等值方法，无法直接应用于含异步风力发电机的外部系统等值。为解决这一问题，本方法忽略外部系统中风力发电机定子及转子绕组的电磁暂态过程，将风机用无源线性元件与电流源构成的简化模型表示。通过测试算例，验证了异步风力发电机简化模型的正确性，通过频域及时域响应两方面证实了外部系统FDNE等值方法的准确性。本方法为含异步风力发电机的外部系统频率相关网络等值提供了一种可行的解决方案，相对基于将风力发电机从外部系统移除的已有方法可有效减少FDNE端口个数，提高了电力系统电磁暂态仿真效率。

FDNE (frequency dependent network equivalent) is widely applied on external system equivalent in electromagnetic transient simulation, which takes responses of electrical networks in a specific frequency band into consideration. Since FDNE is linear and time invariant, which cannot be directly used on external systems including asynchronous wind turbine. In order to solve this problem, this paper neglects electromagnetic transient process in stator and rotor windings of a wind turbine, representing which with a reduced model composed of passive and linear components with a current source. A case study is given to verify the effectiveness of the reduced model, and the accuracy of FDNE is verified through responses in both frequency and time domain. This paper provides a practicable solution to build a FDNE for external system with asynchronous wind turbine generator, reducing whose port number compared to existing method based on removing wind turbine from external systems, which helps to improve the simulation efficiency.