摘要
从总体可靠度和元件重要度两个方面对全数字化保护系统的可靠性进行研究。基于可靠性框图和邻接矩阵方法建立了总体可靠性模型,然后基于概率重要度和关键重要度,建立了全数字化保护系统元件重要度评价指标。其中,概率重要度用于发现系统中的薄弱环节,以指导和优化系统设计;关键重要度用于指导系统维修。为说明所提方法的有效性,提出了6种全数字化保护系统的典型结构,并利用上述方法,对其进行了详细的计算与分析。
The reliability issue of the all-digital protection system is investigated from the aspects of overall reliability and component importance respectively. The paper develops the overall reliability models based on the reliability block diagram and connection matrix methods. It then investigates and selects two appropriate measures of the importance. The first is the probability importance used to identify the weak points of the protection system and to prioritize the system design. The second measure uses criticality importance to prioritize maintenance actions. To demonstrate the proposed method, this paper first introduces six alternative architectures of all-digital protection systems. Afterwards, the associated overall reliability as well as component importance are calculated and discussed.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第1期77-82,共6页
Proceedings of the CSEE
