热力发电2024，Vol.53Issue(11)：56-65,10.DOI:10.19666/j.rlfd.202403082
基于分布函数优选的风电机组可靠性建模与分析研究
Reliability modeling and analysis of wind turbine based on distribution function optimization
摘要
Abstract
Reliability model is the foundation of reliability analysis.Conventional reliability modeling takes the entire system as the research object,and uses all fault data to fit the distribution function of the system,estimate parameters,and optimize the model,thus to determine the distribution type and distribution function of the system,and then to calculate the reliability indicators of the system.Wind turbine is a typical complex electromechanical system,with different functions,structures,and fault forms of each subsystem.It is obviously inappropriate to use one distribution function to determine the fault distribution of the entire system.Therefore,based on the collected and sorted fault data of wind turbines,the distribution function optimization-based reliability modeling and analysis technology of wind turbines is proposed.By applying the commonly used exponential distribution,normal distribution,log-normal distribution,Weibull distribution and gamma distribution,the distribution function fitting,parameter estimation and goodness of fit analysis of the fault interval of each subsystem of wind turbines are carried out,and the distribution function and subsystem reliability function of the fault interval time of each subsystem are determined.On this basis,a Copula connection function is used to establish the reliability function model for wind turbines,taking into account the fault correlation between subsystems.Moreover,an example analysis is conducted on the fault data of an offshore wind turbine,which verifies the feasibility of the proposed method.关键词
风电机组/分布函数/可靠性建模/故障相关性分析/可靠性分析Key words
wind turbine/distribution function/reliability modeling/fault correlation analysis/reliability analysis引用本文复制引用
汪臻,李国庆,傅望安,邓巍,王海明,赵勇,苏人奇..基于分布函数优选的风电机组可靠性建模与分析研究[J].热力发电,2024,53(11):56-65,10.基金项目
中国华能集团有限公司总部科技项目(HNKJ20-H72-02) Science and Technology Project of China Huaneng Group Co.,Ltd.(HNKJ20-H72-02) （HNKJ20-H72-02）
