Research on mitigation methods of voltage sag with phase - angle jump

考虑相位 跳 变 的 电压凹陷动态补偿控制器研究

The experiments show that compared with conventional alumina powder nano alumina can significantly improve the properties of PTC material by increasing temperature coefficient 60 % lowering room temperature resistance 20 % increasing breakdown voltage 13 % and jump range about one order respectively .

实验表明，与普通Al2O3相比，纳米Al2O3能显著提高PTC陶瓷的性能：温度系数增大60%，常温电阻降低20%， 耐压增大13%， 升阻比增大近1个数量级。

It could dynamically detect voltage sag characteristics including sag amplitude sag duration and phase jump .

该方法可以实现对 单相 电压凹陷幅值、起止时刻和相位 跳 变等特征量的动态检测。

The correct detection of the voltage sag characteristics ( its magnitude duration and phase-angle jump appeared at the same time ) is of great importance for the dynamic voltage restorer ( DVR ) to effectively solve the problem of voltage sag .

对于可有效解决电压骤降问题的动态电压恢复器（DVR）来说，准确检测出 电压骤降的三大特征量即骤降幅值、持续时间和可能同时出现的相位 跳 变是其关键所在。

The correct detection of the voltage sag characteristics ( its magnitude duration and phase angle jump ) is of great importance for the power quality evaluation and its mitigation .

对于 电压凹陷的三大特征量幅值、持续时间和相位 跳 变的准确检测是电压质量评估与抑制干扰首先要解决的重要课题。

A small dynamo with a secondary winding that produces a high voltage enabling a spark to jump between the poles of a spark plug in a gasoline engine .

带有复电绕组的发电机产生的高 电压能够使在汽油机中的火花塞的两极间的电火花 跳动。

With the consideration of the voltage sag duration and the phase-angle jump the vulnerable areas of voltage sag are revised more accurately .

并在此基础上考虑 电压暂降持续时间、相位 跳 变等因素，对电压暂降凹陷域进行修正，从而更加精确地确定凹陷域。

Experiments confirmed that the balance of the mid-point potential was well suppressed to avoid the high voltage jump .

实验证实了中点电位的平衡得到了很好的抑制，避免了过高的 电压 跳 变。