变电站的关键设施的输电和配电电网，促进转变电压等级和分配电力。
Substations are key installations in the transmission and distribution grid that facilitate the transformation of voltage levels and the distribution of electrical power.
其中包括连接在低电压域与高电压域之间的电压转变电路。
Included is a voltage transition circuit connected between a low voltage domain and a high voltage domain.
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