directional power relay 定向功率继电器 ; [通信] 定向功率中继 ; 功率方向继电器
power directional relay 功率方向继电器 ; 功率极化继电器
induction type power directional relay 感应式功率定向继电器
three-phase power directional relay 三相功率方向继电器
VOLTAGE AND POWER DIRECTIONAL RELAY 电压功率方向继电器 ; 电压和功率方向继电器
phase power directional relay 三相功率方向继电器
negative sequence power directional relay 负序功率方向继电器
directional E power relay 定向功率继电器
directional U power relay 定向功率继电器
Analysis shows that the voltage operating dead zone is small and have more sensitivity than traditional power directional relay.
分析表明其电压动作死区很小，比传统的功率方向元件具有更高的动作灵敏性。
The scheme includes the transverse differential protection, the directional relay action on negative sequence power of fault component and the incomplete differential protection.
该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。
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