11型线路微机零序保护拒动分析

Refusal-to-move Analysis for Zero Sequence Protection of Model 11 Microcomputer

11型线路微机零序保护装置受 3U0 突变量闭锁值影响 ,零序保护元件拒动。退出 3U0 突变量闭锁及零序末段方向元件 ,以或关系并入可以反映任何故障类型的工频变化量方向原理继电器 ,可弥补

The zero sequence protection components in model 11 microcomputer refused to move under the influence of 3U 0 sudden variable closing value. With drawal of 3U 0 sudden variable closing and zero sequence last segment directional components, and incorporation of and/or relationship, may reflect industrial frequency change direction principle relays in any failure mode, and overcome the drawback of dead zone in the zero sequence protection directional components of Model 11 microcomputer.