| 基于幂律过程的风力机故障建模方法研究 |
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| 引用本文： | 郑玉巧,魏剑峰,董付刚,靳红红. 基于幂律过程的风力机故障建模方法研究[J]. 太阳能学报, 2022, 43(1): 52-57 |
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| 作者姓名： | 郑玉巧 魏剑峰 董付刚 靳红红 |
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| 作者单位： | 兰州理工大学机电工程学院 |
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| 基金项目： | 国家自然科学基金(51965034,51565028);兰州市人才创新创业项目(2018-RC-25)。 |
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| 摘 要： | 针对传统风力机故障建模方法存在的适用条件不符、误差较大等问题,提出一种基于幂律过程的风力机故障建模方法.首先对风力机故障数据进行趋势检验,结合故障数据的非齐次泊松特点,建立基于幂律过程的风力机故障模型;然后分别利用最小二乘法、极大似然估计法及列文伯格-马夸尔特算法求解模型参数,并比较不同参数估计方法的优越性;最后通过求...
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| 关 键 词： | 风力机 模型建立 参数估计 幂律过程 拟合优度 |
RESEARCH ON FAULT MODELING METHOD OF WIND TURBINE BASED ON POWER-LAW PROCESS |
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| Zheng Yuqiao,Wei Jianfeng,Dong Fugang,Jin Honghong. RESEARCH ON FAULT MODELING METHOD OF WIND TURBINE BASED ON POWER-LAW PROCESS[J]. Acta Energiae Solaris Sinica, 2022, 43(1): 52-57 |
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| Authors: | Zheng Yuqiao Wei Jianfeng Dong Fugang Jin Honghong |
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| Affiliation: | (School of Mechanical and Electronical Engineering,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | Aiming at the problems of the traditional wind turbine fault modeling methods,such as inconsistent application conditions and large errors,a fault modeling method is proposed based on the power-law process for building fault modeling of wind turbines fault data.At first,the trend of the fault data was tested and combined with the non-homogeneous poisson process characteristics of fault data,a wind turbine fault model based on power-law process is established.Then,the least square(LS)method,maximum likelihood estimation(MLE)and levenberg-marquardt(LM)method are used to estimate the parameters,and the advantages of different parameter estimation methods are compared.At last,the goodness-of-fit is utilized to show the effectiveness of the present method.It shows that the goodness-of-fit indexes obtained by different parameter estimation methods are all close to 1,so the model can describe the fault process of wind turbine more accurately.Besides,the lewenberg-marquardt algorithm has higher precision in solving model parameters,which are 0.2%higher than that of maximum likelihood estimation method and 4.2%higher than that of least square method. |
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| Keywords: | wind turbines model buildings parameter estimation power-law process goodness of fit |
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