摘要
针对现行的时频分析方法(包括小波变换和希尔伯特黄变换等)在分析海上风力机的实测信号时的不足,发展一种基于改进Prony变化的短时时频分析方法,并使用风电基础结构与风电整机结构的海上实测数据验证该方法的正确性。通过与现有的几种主要使用的时频分析方法进行对比研究,对比论证新方法及传统时频分析方法在应用于海上风电结构时的实用性和可行性。
In view of the shortcomings of the existing time-frequency analysis methods such as wavelet transform and Hilbert-Huang transform in the analysis of measured signals of offshore wind turbines,this paper developed a short-time time-frequency analysis method based on the improved Prony method,and the correctness of the proposed method is verified by the measured data of the foundation of an offshore wind turbine and the offshore wind turbine structure. The practicability and feasibility of the proposed timefrequency analysis method are demonstrated by comparing with several existing time-frequency analysis methods.
作者
熊根
王滨
陆南辛
夏露
祝周杰
Xiong Gen;Wang Bin;Lu Nanxin;Xia Lu;Zhu Zhoujie(Key Laboratory of Far-shore Wind Power Technology of Zhejiang Province,Hangzhou 311122,China;POWERCHINA Huadong Engineering Corporation Limited,Hangzhou 311122,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2022年第9期280-286,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(52071301
51909238)
浙江省自然科学基金(LHY21E090001)。
关键词
海上风电
状态监测
实测数据
时频分析
希尔伯特黄变换
offshore wind power
condition monitoring
measured data
time-frequency analysis
Hilbert-Huang transform
