在基于零序电流方向原理的矿井低压电网选择性漏电保护中,比相误差是导致保护误动的主要因素。
The phase comparison error is the primary factor leading to mistaken action in the selective leakage protective system of underground LV networks based on zero sequence current direction.
在典型的六相输电系统中,半正序、半零序和半负序故障分量不受系统阻抗变化的影响。
In typical six-phase transmission system, half positive sequence, half zero sequence and half negative sequence fault components are independent of the variance of system impedance.
该方法可以在对移相器零点校正同时进行移相器相序检验,方法简单,具有实用价值。
This method can test phase sequence of phase switcher while rectifying the zero point of phase switcher. This method is simple and value in practice.
这种新方法的基础是零序变压器在三相异步电动机断相时输出一个电压信号。
Use is made of that zero-sequence transformer outputs a voltage signal when phase-failure occurs in three-phase induction motor.
建立了基于模分量大小和三相及零序电流大小的模糊数学模型,能快速准确的识别振荡中发生的不对称故障。
Establish the fuzzy set based on modulus component, three phases and residual current, which can distinguishing unbalance faults from power swing rapidly and reliably.
本型零序电流互感器为全封闭式。二次绕组及铁芯均浇注在聚脂树脂内。中间窗孔供三相电缆穿过。
The zero sequence current transformer is full enclosed type. The secondary windings and iron core are insulated by epoxy resin. The middle hole is used for cable going through.
在连接UPS的交流引入线时,火线零线不允许接反(注意某些UPS还有相序之分)。
UPS to connect the exchange to introduce line, the battle line is not allowed to access anti-Line (Note that there are certain sequence of UPS's).
论文根据上述分析设计了基于故障分量采样值差动保护、故障分量相量差动保护、常规电流差动保护和零序电流差动保护自适应的保护方案。
The setting schemes of the resistance coefficient and the least trip differential current for the current differential protection based on sampled values using fault component are discussed.
实验结果表明,该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。
Experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.
经研究发现,零序变压器输出电压与断相点间电压u _ (A ' A)成正比。
It is found that output voltage of zero-sequence transformer is proportional to voltage UA 'a between phase-failure points.
该文基于三磁柱变压器及三磁柱电感的动态方程建立了带三磁柱电感及三磁柱变压器的三相逆变器瞬时零序分量模型。
In this paper, the instantaneous model of zero-sequence circulating current between parallel three-phase inverters with three-pole reactors and three-pole transformers is established.
插座的接地端子不与零线端子连接。同一场所用的三相插座,接线的相序一致;
Earthing connector of socket will not connect to neutral connector. 3 phase socket at the same place connect wires in same way.
插座的接地端子不与零线端子连接。同一场所用的三相插座,接线的相序一致;
Earthing connector of socket will not connect to neutral connector. 3 phase socket at the same place connect wires in same way.
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