风力发电机塔筒频率监测方案与实现  

Tower Frequency Monitoring Solution and Implementation for Wind Turbine Generator Systems

作　　者：柳金锐 郭雁一夫 LIU Jinrui;GUO Yanyifu(CRRC Zhuzhou Institute Co.,Ltd.,Zhuzhou,Hunan 412001,China)

机构地区：[1]中车株洲电力机车研究所有限公司,湖南株洲412001

出　　处：《控制与信息技术》2025年第1期122-127,共6页CONTROL AND INFORMATION TECHNOLOGY

基　　金：湖南省十大技术攻关项目(2023GK1030)。

摘　　要：塔筒频率是风机安全检测与评估的重要参数,但是目前还没有较为成熟的自动化监测方法。文章探索了一种创新的风力发电机塔筒频率监测方案,以提高塔筒结构健康监测的准确性和实时性。其通过实时采集塔筒振动数据,利用快速傅里叶变换(FFT)进行频域分析,检测塔筒的固有频率变化,实现故障预警和保护;使用高精度振动监测仪获取加速度数据,通过FFT将时间域信号转换为频域信号,利用峰值检测器提取瞬时频率,并与固有频率比较,判断是否超出安全阈值。技术创新点在于通过实时振动数据采集和FFT频域分析,实现高精度频率监测;系统设计简洁,便于部署和维护。研究结果表明,该方案在停机状态误差仅为0.0122Hz,能准确识别固有频率变化,有效检测潜在结构损伤和故障,具备高灵敏度和准确性。本文所提方案能够提升风力发电机组的结构健康监测水平,保障风电系统的安全运行,可以为风力发电机组健康管理提供技术支持,对推动风电技术进步和实现“双碳”目标具有重要意义。Tower frequency is an important parameter for the safety detection and evaluation of wind turbines;however,there is a currently a lack of mature automated monitoring methods.This study explored an innovative tower frequency monitoring solution for wind turbine generator systems(WTGS),aimed at improving the accuracy and real-time performance of tower structural health monitoring.The solution involves collecting tower vibration data in real time and utilizing fast Fourier transform(FFT)for frequency domain analysis to detect natural frequency changes in the towers and to enable fault warning and protection.The specific methods include using a high-precision vibration monitor to acquire acceleration data,converting time-domain signals into frequency-domain signals through FFT,extracting instantaneous frequency using a peak detector,and comparing it with the natural frequency to identify any frequency beyond the safety threshold.The technical innovation lies in the realization of high-precision frequency monitoring through real-time vibration data acquisition and FFT-based frequency domain analysis.Featuring a simple design,the system offers easy deployment and maintenance.The research results showed the effectiveness of the proposed frequency monitoring solution in accurately identifying natural frequency changes,with an error of merely 0.0122 Hz in the shutdown state,and in detecting potential structural damages and faults with high sensitivity and accuracy.The conclusion points out that the tower frequency monitoring solution proposed in this paper helps improve the structural health monitoring level of WTGSs and ensure the safe operation of wind power systems.The study findings provide technical support for the health management of WTGSs,which is of great significance for promoting the advancement of wind power technology and contributing to the fulfillment of the"dual carbon"goals.

关 键 词：风力发电机组 塔筒频率监测 故障预警 快速傅里叶变换 

分 类 号：TM315[电气工程—电机]