Radar Imaging System for in-Service Wind Turbine Blades Inspections: Initial Results from a Field Installation at a 2 MW Wind Turbine

IF 6.7 1区计算机科学 Q1 Physics and Astronomy

Progress in Electromagnetics Research-Pier Pub Date : 2018-06-04 DOI:10.2528/PIER18021905

J. Moll, J. Simon, Moritz Malzer, V. Krozer, D. Pozdniakov, R. Salman, Manfred Durr, Michael Feulner, A. Nuber, H. Friedmann

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引用次数: 22

Abstract

This paper presents an imaging radar system for structural health monitoring (SHM) of wind turbine blades. The imaging radar system developed here is based on two frequency modulated continuous wave (FMCW) radar sensors with a high output power of 30 dBm. They have been developed for the frequency bands of 24,05 GHz-24,25 GHz and 33.4 GHz-36.0 GHz, respectively. Following the successful proof of damage detection and localization in laboratory conditions, we present here the installation of the sensor system at the tower of a 2 MW wind energy plant at 95 m above ground. The realization of the SHM-system will be introduced including the sensor system, the data acquisition framework and the signal processing procedures. We have achieved an imaging of the rotor blades using inverse synthetic aperture radar techniques under changing environmental and operational condition. On top of that, it was demonstrated that the front wall and back wall radar echo can be extracted from the measured signals demonstrating the full penetration of wind turbine blades during operation.

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用于在役风力涡轮机叶片检查的雷达成像系统:2兆瓦风力涡轮机现场安装的初步结果

介绍了一种用于风力发电机组叶片结构健康监测的成像雷达系统。这里开发的成像雷达系统是基于两个调频连续波(FMCW)雷达传感器，具有30 dBm的高输出功率。它们分别为24,05 GHz-24,25 GHz和33.4 GHz-36.0 GHz频段开发。在实验室条件下成功验证了损坏检测和定位后，我们在这里展示了在距离地面95米的2兆瓦风力发电厂塔架上安装传感器系统的情况。介绍了shm系统的实现，包括传感器系统、数据采集框架和信号处理程序。利用逆合成孔径雷达技术，实现了不同环境和工况下的旋翼叶片成像。在此基础上，验证了从风力机叶片运行时全侵彻的实测信号中提取出前壁和后壁雷达回波。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Electromagnetics Research-Pier 物理-电信学

CiteScore

7.20

自引率

3.00%

发文量

审稿时长

1.3 months

期刊介绍： Progress In Electromagnetics Research (PIER) publishes peer-reviewed original and comprehensive articles on all aspects of electromagnetic theory and applications. This is an open access, on-line journal PIER (E-ISSN 1559-8985). It has been first published as a monograph series on Electromagnetic Waves (ISSN 1070-4698) in 1989. It is freely available to all readers via the Internet.