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1)  zero sequence active component
零序有功分量
2)  active component direction of zero-sequence current
零序电流有功分量
1.
Since the success rate of faulty line selection based on single criterion for single-phase earthing fault in non-solidly earthed network is normally low,a new comprehensive faulty line selection equipment is proposed which based on the first half transient wave and active component direction of zero-sequence current.
为解决小电流接地系统发生单相接地故障后,单相判据的小电流单相接地故障选线成功率普遍较低的问题,提出一种基于暂态首半波和零序电流有功分量方向的综合选线装置。
3)  zero sequence active power
零序有功功率
4)  zero-sequence component
零序分量
1.
A zero-sequence component imposed vector control system of induction machine based on three-level NPC(Neutral Point Clamped) inverter is proposed,which adopts direct rotor-flux-oriented vector control mode.
提出一种基于三电平中点箝位(NPC)逆变器的零序分量注入型感应电动机矢量控制方案。
2.
Because there is no need for acquiring the zero-sequence component,this principle can eliminate the effect of zero-sequence mutual inductance between coupling lines.
由于该方法中没有用到线路两端的零序分量,消除掉耦合线路之间零序互感对测距的影响。
5)  zero sequence component
零序分量
1.
The new scheme uses zero sequence components as operation component and negative sequence components as restraint component to discriminate whether the fault is in the internal or external zone.
提出一种用零序分量做动作量,负序分量做制动量的综合序分量接地距离继电器。
6)  zero sequence active current
零序有功电流
1.
Then the method for zero sequence current direction protection is proposed based on the character parameter of zero sequence active current.
针对矿井低压电网漏电保护装置存在的问题,分析了发生漏电时电流序分量的组成特点,得出了上级漏电保护装置影响下级漏电保护动作可靠性的结论,提出在分支馈电开关处采用零序有功电流作为特征参数的方法,并给出了直接采样零序有功电流的数据采集系统。
补充资料:零序电流互感器
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性质:剩余电流型漏电保护装置的检测元件。其铁心多是环形的。所有电源线(两根、三根或四根)穿过互感器铁心构成互感器的原边;其二次线圈与极化电磁铁或电子线路联接。正常运行时,互感器一次边各线在铁心中产生的磁通互相抵消,二次线圈不产生感应电动势,漏电保护装置不动作;当后方发生漏电或有人触电时,出现剩余电流,二次线圈产生感应电动势,漏电保护装置动作。纯电磁式剩余电流型漏电保护装置的零序电流互感器必须具有很高的灵敏度。其铁心用铁镍合金或非晶态材料制成。

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