Abstract: : the substation is in power system voltage conversion, accept and electric power distribution, control and adjustment to the current voltage power facilities.
摘要：变电站是电力系统中转换电压、接受和分配电能、控制电流走向和调整电压的电力设施。
It is a key to control the flow of energy reasonably and the distribution of power effectively with modern power conversion technology in the system, which can exert advantages of the system.
运用现代功率变换技术来控制系统中能量合理流动和功率有效分配，是发挥系统优势的关键。
It's used to protect the installations of DC power distribution system and electric equipments against overload and short circuit as well as for conversion of frequent operation of circuit.
用来对直流配电系统的设施和电气设备进行过载、短路保护之用，也可用作线路频繁操作转换作用，广泛用于电力、工矿等行业。
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