高电压技术2017，Vol.43Issue(10)：3435-3442,8.DOI:10.13336/j.1003-6520.hve.20170925035
基于动态RCS的风电机叶片多普勒特性
Doppler Characteristics of Wind Turbine Blade Based on Dynamic RCS
摘要
Abstract
The Doppler effect caused by the dynamic rotation of the wind turbine blades is an important evidence for the identification of the wind farm clutter from the nearby radar stations.It is the difficult to obtain accurate radar echo signal of wind turbine blade by the existing methods,thus the accurate Doppler spectrum cannot be obtained.Consequently,the problem of accurate simulation of radar echo for wind turbine blades is avoided,and a new idea is proposed to solve the Doppler spectrum by using the dynamic RCS of the blade through the study of the mechanism of the Doppler effect.Based on the matured dynamic RCS exact solution techniques of electrically large size targets,the time domain RCS curve of blades in dynamic motion state is obtained with the quasi static method,using the hybrid algorithm of physical optics method (PO) and of equivalent currentsmethod (ECM).Based on this method,calculation and analysis of the wind turbine blades Doppler characteristics in the rotation,torque,waving and tilt conditions provide a reference for the recognition for radar target signal of wind turbine,the reduction of radar cross section (RCS),and wind farm clutter suppression of the nearby radars.关键词
风电机叶片/动态RCS/多普勒特性/准静态法/物理光学法/等效电磁流法Key words
wind turbine blades/dynamic RCS/Doppler characteristics/quasi static method/physical optics method/equivalent currents method引用本文复制引用
唐波,刘任,张建功,刘兴发,孙睿,江浩田..基于动态RCS的风电机叶片多普勒特性[J].高电压技术,2017,43(10):3435-3442,8.基金项目
电网环境保护国家重点实验室基金(GYW51201700590) （GYW51201700590）
国家电网公司科技项目(GY71-16-011).Project supported by Key Laboratory of Power Grid Environmental Protection(GYW51201700590),Science and Technology Project of SGCC(GY71-16-011) （GY71-16-011）
