Incorporating Industry 4.0 concepts into substation automation systems (SASs) enables the achievement of coordinated, fast, and selective protection systems. In this context, this work presents a reliability assessment applied in an industrial substation of a textile company within the framework of Industry 4.0. The Markov chain models both equipment and protection systems, while fault tree analysis allows for analyzing the alternative design scenarios in detail. The TopEvent software version 1.2.3 is used to provide accurate diagnosis using the min-max method. While enhancing selectivity with circuit breakers decreases failure severity, it concurrently increases contingency probability, not necessarily leading to higher reliability. Notably, adopting IEC 61850-based logical selectivity proves more reliable than time coordination, improving the system resilience with load shedding. With support from real-time communication between intelligent electronic devices (IEDs), this approach facilitates reliability improvement, particularly in severe contingencies.

中文翻译：

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工业4.0背景下工业变电站设计中的可靠性评估

将工业 4.0 概念融入变电站自动化系统 (SAS)，可以实现协调、快速和选择性的保护系统。在此背景下，本文提出了在工业 4.0 框架内应用于一家纺织公司工业变电站的可靠性评估。马尔可夫链对设备和保护系统进行建模，而故障树分析可以详细分析替代设计方案。 TopEvent 软件版本 1.2.3 用于使用最小-最大方法提供准确的诊断。虽然增强断路器的选择性可以降低故障严重程度，但同时也会增加意外发生的概率，但不一定会带来更高的可靠性。值得注意的是，事实证明，采用基于 IEC 61850 的逻辑选择性比时间协调更可靠，从而提高了系统的负载卸载弹性。在智能电子设备 (IED) 之间实时通信的支持下，这种方法有助于提高可靠性，特别是在严重的突发事件中。