基于光纤通信的远方备自投设计与实现

Design and implementation of the far-away place reserve power based on the optical-fiber correspondence

针对110 kV电网联络线上中间变电站失压时,原有变电站备自投装置无法发挥作用的情况,研究了一种利用已有光纤通信通道传递运行状态信息、故障信息和跳合闸命令方式的备用电源自投方案。通过改进原有备自投装置的原理及逻辑,加装通讯接口和光通讯模块,实现与光纤网的接口。经在某城区110 kV电网中的应用与实施,较好地实现了多级串联电网远方备用电源自投。

When the center transformer substation no-voltage in 110 kV network tie-line, the reserve power of original substation cannot operate. A new reserve power scheme is put forward based on state information, fault information and on-or-off switch mode of present-used optical-fiber communication channel. The new scheme improves the old device＇s operation theory and logic by adding communication interface and optic communication module to be connected with optic-fiber-network. The scheme has been employed in 110 kV network to implement far-away reserve power of multi-level series network.