The reliability, availability and system dynamics of a repairable multi-channel IEC-61850 based mission-critical Substation Communication Network with imperfect repairs can be determined by analysing the magnitudes and the layout formation of the eigenvalues of the transition probability matrix. The disadvantage of only using the eigenvalue analysis method is that it focuses on the asymptotic state of the system, and does not account for the system state transient behaviour, which makes the optimisation of the system at subsystem level to be challenging. In this paper, a complimentary analysis technique that advances the eigenvalue analysis method is presented based on the concept of absorbing Markov Chain and matrix calculus techniques. The objective of the study focuses on the responsiveness of the system reliability performance to repair factors. The results of the case studies indicate that system performance is very dependent on the diagnostic coverage of the individual subsystems compared to their repair efficiencies, particularly for high diagnostic coverages at 99% and 90% based on ISO 13849-1 for subsystems A and B in a ‘one-out-of-two’ scheme configuration. Therefore, the results reveal that emphasis should be more on the system diagnostic capability because it is embedded in the system design itself that cannot easily be changed at a later stage considering that it would be too expensive and require plant downtime for implementation and testing as well.

通过分析过渡概率矩阵的特征值的大小和布局形式，可以确定具有可修复性的，基于可修复多通道IEC-61850的任务关键型变电站通信网络的可靠性，可用性和系统动力学。仅使用特征值分析方法的缺点是，它只关注系统的渐近状态，而不考虑系统状态的瞬态行为，这使得子系统级别的系统优化面临挑战。本文基于吸收马尔可夫链和矩阵演算技术的概念，提出了一种改进特征分析方法的互补分析技术。研究的目标集中在系统可靠性性能对维修因素的响应上。案例研究的结果表明，与单个子系统的维修效率相比，系统性能在很大程度上取决于各个子系统的诊断范围，尤其是对于ISO 13849-1中针对子系统A和B的ISO 13849-1而言，诊断覆盖率高达99％和90％ “二选一”方案配置。因此，结果表明，应该将重点更多地放在系统诊断能力上，因为它嵌入在系统设计本身中，由于考虑到它太昂贵并且需要工厂停机进行实施和测试，因此在以后的阶段不易更改。 。案例研究的结果表明，与单个子系统的维修效率相比，系统性能在很大程度上取决于各个子系统的诊断范围，尤其是对于ISO 13849-1中针对子系统A和B的ISO 13849-1而言，诊断覆盖率高达99％和90％ “二选一”方案配置。因此，结果表明，应该将重点更多地放在系统诊断能力上，因为它嵌入在系统设计本身中，由于考虑到它太昂贵并且需要工厂停机进行实施和测试，因此在以后的阶段不易更改。 。案例研究的结果表明，与单个子系统的维修效率相比，系统性能在很大程度上取决于各个子系统的诊断范围，尤其是对于ISO 13849-1中针对子系统A和B的ISO 13849-1而言，诊断覆盖率高达99％和90％ “二选一”方案配置。因此，结果表明，应该将重点更多地放在系统诊断能力上，因为它嵌入在系统设计本身中，由于考虑到它太昂贵并且需要工厂停机进行实施和测试，因此在以后的阶段不易更改。 。