• 基于电流方向原理矿井低压电网选择性漏电保护,比误差导致保护主要因素

    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.

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  • 典型输电系统中,、半和半负故障分量系统阻抗变化影响。

    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.

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  • 方法可以校正同时进行移检验,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.

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  • 这种新方法基础变压器异步电动机输出一个电压信号

    Use is made of that zero-sequence transformer outputs a voltage signal when phase-failure occurs in three-phase induction motor.

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  • 建立基于分量大小电流大小的模糊数学模型快速准确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.

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  • 电流互感器封闭式。绕组铁芯均浇注聚脂树脂内。中间窗孔电缆穿过

    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.

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  • 连接UPS交流引入线时,火线线允许接反(注意某些UPS还有之分)。

    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).

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  • 论文根据上述分析设计了基于故障分量采样差动保护、故障分量量差动保护、常规电流差动保护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.

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  • 实验结果表明装置线制系统中的谐波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.

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  • 经研究发现变压器输出电压电压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.

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  • 该文基于三磁变压器及三磁柱电感动态方程建立了带三磁柱电感三磁柱变压器的逆变瞬时分量模型

    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.

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  • 插座接地端子线端子连接。同一场所用的插座,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.

    youdao

  • 插座接地端子线端子连接。同一场所用的插座,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.

    youdao

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