When we talk about digitization and digitalization, the term digital twin is not far away; data and information are the new oil for the economy. But hasn’t electrical power always been at the forefront with computational models and computer applications for the secure operation of power systems? With the development of computer systems in the middle of the last century, power systems were one of the first civilian applications. Many standard computing methods and models in power systems have been established for more than half a century. Why are we suddenly researching and talking so much about digital twins, and which new solutions will really be established in practice? In this special issue, we want to explore these questions and examine them from different perspectives.

中文翻译：

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数字孪生：从流行语到解决方案 [客座社论]

当我们谈论数字化和数字化时，这个词数字孪生并不遥远；数据和信息是经济的新石油。但是，电力不是一直处于电力系统安全运行的计算模型和计算机应用的最前沿吗？随着上世纪中叶计算机系统的发展，电力系统是最早的民用应用之一。半个多世纪以来，电力系统中的许多标准计算方法和模型已经建立。为什么我们突然对数字孪生进行如此多的研究和讨论，哪些新的解决方案将真正在实践中建立？在本期特刊中，我们想探讨这些问题，并从不同的角度进行审视。