《电力勘测设计》杂志社有限公司

近几年海上风电在我国取得了快速发展，但在已投运的海上风电场项目出现了谐波超标的情况，采取的谐波抑制措施较为单一。本文通过分析海上风力发电项目分别在不同出力、不同送出海底电缆长度情况下的谐波特性，对谐波幅值与海缆长度的关系进行理论分析。对比在系统内不同位置安装滤波装置的滤波效果，提出在海上升压站中压母线设置滤波装置的方案。

In recent years,offshore wind farm has achieved rapid development in China；In some projects,the harmonic exceeds the limitation，but the harmonic suppression measures adopted are relatively simple.This paper analyzes the harmonic characteristics of offshore wind power projects under different output power quantity and different length of submarine cables,and theoretically analyzes the relationship between harmonic amplitude and submarine cable length.The filtering effects of installing filter devices at different positions in the system are compared,and the scheme of installing filter devices on the medium voltage bus of offshore substation is proposed.