摘要
针对单设备的状态检修决策结果有时不能满足电网安全运行要求的问题,从电网整体运行角度,提出了电网状态检修的概念,建立了基于D-S证据理论的电网状态检修决策模型。考虑到设备之间、设备与电网之间的实时关联性,归纳出了电网状态检修决策的指导原则,并对所有待修设备在个体决策层面得到的可能检修方案依据原则进行了组合与筛选,得到了电网状态检修的可能方案集合,然后建立了能够全面反映电网整体运行安全性、可靠性和经济性的决策指标,并给出了量化方法;将上述相互独立的指标作为证据理论的证据源,将各方案下指标的标准化值作为证据理论的BPA值,采用上述决策模型对电网状态检修可能方案进行了决策寻优。算例结果表明,最终的检修方案可以使设备个体与电网的整体安全运行达到综合最优。
Aiming at the safe and statistical operation requirements of the power transmission systemcannot be met by condition based maintenance（CBM） decision-making results for individual device,from an entire system prospect,the concept of CBM for power transmission system was proposed,and a maintenance decision-makingmodel based on D-S evidence theory was established.Under the consideration of the real-time correlation between the devices,and the system both,the guiding principles were also summarized which are the basic of the combination and selection of all possible schemes based on the individual decision-making,and then the collection of the possible schemes of the system can be selected out.Then,thedecision-making indicators which are the reflection of the safety,reliability and economy of the power transmission system were established,and their quantitative methods were given.The optimalscheme can be selected out by the established model of which the evidences are these independent indicators and the BPA values are the normalized values of the indicators beneath each possible scheme.The nmnerical result shows that,the individual equipment and the entire power transmission system are both on a safety operation level.
出处
《机电工程》
CAS
2014年第5期639-643,共5页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51107112)
关键词
电网
状态检修
决策指标
D-S证据理论
power transmission system
condition based maintenance （CBM）
decision-making indicators
D-S evidence theory
