【作者】 王向平；

【Author】 WANG Xiang-ping East China Electric Power Design Institute,Shanghai 200063,China

【机构】 华东电力设计院；

【摘要】 目前大量的线路保护使用光纤通道,主要用于主保护功能的实现,文章提出了利用纵联数字通道完善线路保护辅助功能的新原理、新方案。主要对保护TV断线、TA断线、振荡检测及合于故障保护开放功能的实现方案进行了介绍。在线路保护的辅助功能中使用新的检测方案,有助于全面提升保护的性能。尤其是针对这些保护辅助功能误动引起的全站停电提出了值得参考的解决方案。更多还原

【Abstract】 At present,fiber optic channel is extensively used for line protection,and it is mainly used to realize high speed line main protection function.Now,the new idea and new scheme is proposed to complete line auxiliary function by means of this digital channel.The implementation scheme for TV open,TA open,and power swing detection and switching in switch-onto-fault protection function are presented.When a new scheme is used in auxiliary function of line protection,it helps to promote the feature of protection to a great extent.Especially,it is helpful to resolve the problem of whole-substation-blacked out resulted from the mis-operation of the auxiliary function.更多还原