一起收信电平过高引起的高频保护误动分析  

High-frequency protection maloperation analysis caused by receiver with high-level

作　　者：曾庆汇 胡志保 

机构地区：[1]南昌供电公司,江西南昌330006

出　　处：《电力系统保护与控制》2009年第24期188-189,193,共3页Power System Protection and Control

摘　　要：220kV输电线路高频保护误动,给电网安全稳定运行带来极大的威胁。介绍了一起收信电平过高时会产生功率倒灌现象(针对GSF系列收发信机),造成功放损伤,引起高频保护误动,并提出了改进措施。The high frequency protection of the 220 kV transmission line in inappropriate time poses a great threat for the safe and stable operation of the power grid. This paper introduces a phenomenon of power flowing backward when the input of the power is too high（specially for the GSF series of transceiver）, which might damage the power amplifying and mistakenly activate the protection system. In the end of the paper, it proposes some measures for improvement.

关 键 词：收信过高 功率倒灌 高频保护 误动分析 

分 类 号：TM774[电气工程—电力系统及自动化]