摘要
电力设备在服役期间受到老化、磨损或天气等运行工况的影响,故障率随时间增长具有累积效应。全面分析影响各类电力设备可靠性的主要因素,建立了计及运行工况的时变故障率模型;在此基础上,考虑各计划检修等级对电力设备可靠性的不同改善程度,利用役龄回退模型构建了A,C 2个重要检修等级下的电力设备故障率函数,并推导了各类电力设备平均无效度公式,进而得到系统可靠性/经济性指标解析表达式。最后通过可靠性测试(RBTS)系统验证评估方法的有效性,并对RBTS发电机系统进行了灵敏度分析。
Electric power equipments suffer from aging, wearing, and weather conditions in operation, the failure rate has a cumulative effect over time. Considering the main factors affecting the reliability of various electric power equipments, the time-varying failure rate model based on the operating conditions is established. On this basis, the important A-level and C-level preventive maintenance modes which have different reliability improvements in each preventive maintenance levels are built based on the effective age, and the average unavailability formulas of kinds of power equipment is derived. Then, the analytical expressions for the system reliability and economy indices are established. Finally, According to the studies on RBTS, the validity of the algorithm is verified, and the sensitivity analysis of the generator system is carried out.
出处
《江苏电机工程》
2016年第2期60-64,共5页
Jiangsu Electrical Engineering
关键词
运行工况
A
C级检修
役龄回退
平均无效度
灵敏度分析
operating conditions
A-level and C-level preventive maintenance
the effective age
average unavailability
the sensitivity analysis
