摘要
根据风力机子系统的不同特性将其分成电力电子系统、机械系统和控制系统3个部分,考虑风速与温度分别对这3个部分的影响,提出计及运行环境影响的风电机组可靠性精确建模方法。为考虑机械系统故障率与风速之间的非线性相关性,该文引入Copula函数进行分析,并利用Copula函数生成相关性样本,从而建立机械系统可靠性模型。根据山西某风场实际风速与温度数据,以2 MW永磁直驱同步风电机组为例,分析不同月份中不同风速与温度情况下风电机组的故障率情况。研究结果表明,使用该文所提方法可得到风速、环境温度与风力机故障率之间的定量关系,从而得到更精确的风力机可靠性模型。
According to the different characteristics of WTG subsystem,this paper divides the WTG into three parts:power-electronic system,mechanical system and control system. In order to describe the nonlinear relationship between the failure rate of WTG mechanical system and the wind speed,the Copula function is used to study the correlation relation and generate correlation samples. This paper finds a wind turbine reliability analysis method which considers the influence of wind speed and temperature for the three parts. At the end of this paper,according to the historical foundation of wind farm,the case analysis the 2 MW permanent magnet synchronous generator failure in the different wind speed and temperature. Research result shows that using the method of this paper can get the quantitative relationship between wind speed,temperature and the WTG failure rates. And this paper provides a method more accurate for WTG reliability analysis.
作者
段贵钟
秦文萍
雷达
李胜文
师景佳
Duan Guizhong;Qin Wenping;Lei Da;Li Shengwen;Shi Jingjia(Shanxi Key Laboratory of Power System Operation&Control(Taiyuan University of Technology),Taiyuan 030024,China;State Grid Shanxi Electric Power Research Institute,Taiyuan 030001,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第5期150-158,共9页
Acta Energiae Solaris Sinica
基金
山西省重点研发计划重点项目(201603D112001)
山西省电力公司科技项目(SGTYHT/14-JS-188)。
作者简介
通信作者:秦文萍(1972-),女,教授、博士生导师,主要从事电力系统可靠性分析、微电网运行与控制技术和微机保护等方面的研究。qinwenpingl027@163.com。
