unbalance voltage

The service of 10 kV shunt capacitor bank is introduced in Langfang area and the causes of frequent action of unbalance voltage protection is analyzed. The setting principle for unbalance voltage of 10 kV shunt capacitor bank is put forward.

介绍了廊坊地区10kV并联电容器组运行情况，分析了不平衡电压保护频繁动作原因，提出了10kV并联电容器组不平衡电压保护的整定原则。

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The DC biasing current has been calculated in detail, which will go through the converter transformer winding in BTB DC system due to unbalance firing and the second harmonic voltage of positive sequence on the AC converter bus.

根据背靠背直流系统的技术特点，详细计算了由于触发不平衡和交流系统正序二次谐波在换流变压器中产生的直流偏磁电流。

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Then the voltage unbalance between the inner and outer IGBTs of the Neutral Point Clamping ( NPC) three level converter is analyzed on basis of this model.

根据这个模型，分析了中点箝位式（NPC）三电平变流器中内外绝缘栅双极型晶体管（IGBT）电压不平衡的原因。

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Measurement of inherent attenuation by the method of voltage level gap has errors caused by the unbalance between the input/ output impedance of the measuring instrument and the characteristic impedance of the signal wire under test. This article discusses in detail the rectification of the errors.

在采用电压电平差法测量固有衰减时，由于测量仪器的输出阻抗、输入阻抗与被测信号传输线的特性阻抗的不匹配，将造成测量误差，本文详细论述其误差的修正。

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The main contents of power energy include frequency deviation, voltage deviation, voltage fluctuation and flicker, voltage unbalance, temporary or transient over-voltage, wave distortion, voltage dips and interruption, power supply reliability and so on.

电能质量的内容包括频率偏差、电压偏差、电压波动与闪变、三相不平衡、暂时或瞬时过电压、波形畸变、电压暂降与短时中断以及供电连续性等。

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