As the development direction of the future power grid, smart grid involves power generation, transmission, substation, power distribution and utilization, scheduling and communication information, among which the digital transformer substation is the core. This article expounds the basic structure and characteristics of digital substation and the related technology, and macroscopically describes the related problems which need to pay attention during the process of digital substation operation and maintenance.%智能电网作为未来电网的发展方向，渗透到发电、输电、变电、配电、用电、调度、通信信息各个环节。在上述这些环节中，数字化变电站无疑是最核心的一环。本文阐述了数字化变电站的基本结构、特点和相关技术，宏观描述了数字化变电站运营与维护过程中需要注意的相关问题。
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