双侧220 kV线路高频保护技改换型工作简述  

Brief Introduction of Technical Transformation of High Frequency Protection for 220 kV Lines on Both Sides

作　　者：刘贺 Liu He

机构地区：[1]新疆伊犁河流域开发建设管理局,新疆伊犁835000

出　　处：《电力系统装备》2020年第13期39-40,共2页Electric Power System Equipment

摘　　要：目前,220 kV及以上电压等级的线路多采用微机高频通道保护,然而由于高频通道所需设备较多、且受天气因素影响较大,较大程度上增加了故障发生的几率,同比,光纤通道的中间设备较少,在一定程度上提高了保护通道的可靠性.文章简述某水电站220 kV线路高频保护技改换型为光纤保护的相关工作,着重表述对技改换型中重点工作内容的理解与分析.At present,the high-frequency channel protection is mostly used for the lines with voltage level of 220 kV and above.However,due to the large number of equipment required for the high-frequency channel and the influence of weather factors,the probability of failure is increased to a large extent.Compared with the same period of last year,there are fewer intermediate equipment in the optical channel,which improves the reliability of the protection channel to a certain extent.This paper is a brief description of the work related to the technical transformation of 220 kV transmission line high frequency protection into optical fi ber protection,focusing on the understanding and analysis of the key work content in the technical transformation.

关 键 词：技改换型 三相不一致 磁饱和 电缆屏蔽层 

分 类 号：TM75[电气工程—电力系统及自动化]