So, how to proceed with the design work of the substation grounding system in permafrost region is a key step in the whole design work.

因此，如何在多年冻土地区进行变电站接地系统的设计，是设计中一项很关键的工作。

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Communication network is the key section in substation automation system.

认为通信网络是变电所自动化系统的关键。

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Abstract: : intelligent substation is the basic premise and key of the intelligent grid construction.

摘要：智能变电站是加强智能电网建设的基本前提和关键所在。

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