On the basis of Xiangfan power grid, the formation background and working principle of district grid standby power auto-switching in were introduced.
以襄樊电网为工程实际基础，介绍了区域电网网络备用电源自动投入系统产生背景、工作原理。
All serial links and communications equipment, shall be provided on a dual redundant basis, such that failure of a single component or link will effect a seamless transfer to standby equipment.
所有串行连接口和通讯设备应提供双线，当发生单一部件或连接故障时可直接转换至备用设备。
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