Industry 4.0 technological expansion and the multiple accesses to the diverse Smart Grid domains (power networks, control systems, market, customer premises) entail the need to provide efficient interconnection mechanisms with connection from anywhere, at any time and in anyhow. However, this type of requirement should not only consist in imposing interoperability solutions between entities and domains, but also in searching the way to justify and trace connections (how, when, where, who) for future governance or auditing actions. This paper, therefore, presents a three layer-based interconnection architecture and several interconnection strategies, all of them adapting the traditional policy decision and enforcement approaches together with the blockchain technology to manage reliable and secure connections among entities, processes and critical resources. With this architecture in mind, the paper also analyzes the coupling level of the blockchain technology, and explores which interconnection strategy is more suitable for Smart Grid domains and their control systems.

工业4.0技术的扩展以及对不同智能电网领域（电力网络，控制系统，市场，客户房屋）的多重访问，需要提供有效的互连机制，以随时随地以任何方式进行连接。但是，这种类型的要求不仅应包括在实体和域之间强加互操作性解决方案，而且还应包括寻找为将来的治理或审计措施证明和跟踪连接（如何，何时，何地，由谁）的方法。因此，本文提出了一种基于三层的互连架构和几种互连策略，它们都采用了传统的策略决策和执行方法以及区块链技术，以管理实体之间的可靠和安全连接，流程和关键资源。考虑到这种架构，本文还分析了区块链技术的耦合程度，并探讨了哪种互连策略更适合智能电网领域及其控制系统。