电力系统中110 kV备自投闭锁及联切回路的应用

Application of 110 kV Spare Power Automatic Switching Shut and Switch-Loop in Power System

为防止备自投装置备投于永久性故障,减少大故障电流对电网的二次冲击,降低冲击对设备的绝缘损伤,或提高重合闸的成功率,防止小电源上网的变电站设备二次回路功能中孤网运行或重合闸不成功,在相应的保护或安自设备动作时,需考虑相应的闭锁与联切实现。因此,主要分析研究了电力系统中关于110 kV备自投闭锁逻辑和联切逻辑问题,以期为电网在设计、施工中的回路完善及标准制定方面提供参考。

In order to prevent the self-provisioning device ready to cast on permanent faults,reduce the secondary impact of large fault current on the grid,reduce the impact of the insulation damage to the equipment,or to improve the success rate of reclosing,to prevent small power supply on the Internet in the secondary circuit function of the substation equipment,network operation or reclosing unsuccessful,in the corresponding protection or safety from the equipment action,need to consider the corresponding interlocking and intersection to realize.Therefore,the article mainly analyzes and researches the power system about 110 kV self-transmission blocking logic and inter-cutting logic,in order to provide reference for the power grid in the design and construction of the circuit improvement and standard development.