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negative power directional unit
相关语句
  负序功率方向
     Turn-to-turn Faults in Stator Windings of Generator and Negative Power Directional Unit
     发电机匝间保护与负序功率方向元件
短句来源
     To prevent this maloperation,negative power directional unit can be used for judging the fault between internal and external,which is a way to prevent turn-to-turn faults protection maloperation.
     提出增加用负序功率方向元件来进行判断内外部故障,可以有效防止匝间保护误动作。
短句来源
  负序功率方向元件
     Turn-to-turn Faults in Stator Windings of Generator and Negative Power Directional Unit
     发电机匝间保护与负序功率方向元件
短句来源
     To prevent this maloperation,negative power directional unit can be used for judging the fault between internal and external,which is a way to prevent turn-to-turn faults protection maloperation.
     提出增加用负序功率方向元件来进行判断内外部故障,可以有效防止匝间保护误动作。
短句来源
  相似匹配句对
     POWER
     清华的力量
短句来源
     the power;
     动力论;
短句来源
     It is limited when the power consider it negative.
     但是,当权力视生育为消极行为的时候,将被取消生育的权利而加以限制。
短句来源
     Negative Power Law and Fractional Structure
     负幂律与分形结构
短句来源
     Action Analysis of Generator Negative Sequence Power Directional Relay
     发电机负序功率方向继电器动作分析
短句来源
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Mostly in the existing projects,longitudinal type neutral overvoltage relaying to against turn-to-turn faults in stator windings is provided.For PT fuse failure,blocking logic is provided.However,in fact,as the logic scheme of relay manufacturer is not so strict that turn-to-turn faults protection frequently maloperate.To prevent this maloperation,negative power directional unit can be used for judging the fault between internal and external,which is a way to prevent turn-to-turn faults protection maloperation....

Mostly in the existing projects,longitudinal type neutral overvoltage relaying to against turn-to-turn faults in stator windings is provided.For PT fuse failure,blocking logic is provided.However,in fact,as the logic scheme of relay manufacturer is not so strict that turn-to-turn faults protection frequently maloperate.To prevent this maloperation,negative power directional unit can be used for judging the fault between internal and external,which is a way to prevent turn-to-turn faults protection maloperation.

在采用纵向零序电压的方式来反映发电机的匝间短路故障时,为防止电压互感器(TV)断线误动作,采用TV断线闭锁逻辑。然而由于某些保护制造厂逻辑功能软件的不严密,在发电机TV一次断线时,匝间保护时常发生误动作。提出增加用负序功率方向元件来进行判断内外部故障,可以有效防止匝间保护误动作。

 
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