One of the major interference to threaten the power quality is the voltage sag.
威胁电能质量的主要干扰之一便是电压跌落。
Expatiated on the principle of SPWM typed DVR compensating voltage sag amply then.
接着对SPWM型DVR补偿电压跌落的原理进行了详细的推导。
Research on a new method of voltage sag measure and voltage compensation strategies.
一种新的电压凹陷检测及其补偿控制策略研究。
Monitor of the voltage sag is a direct way to obtain the information of voltage sag.
对电压跌落进行监测是获得电压跌落信息的直接途径。
Finally, reasonable Suggestions of industry standard about voltage sag are proposed.
最后，提出了关于电压骤降的行业标准的建议。
A method to determine the origin of voltage sag disturbance is proposed in this paper.
本文提出的方法以确定原产地的电压跌落扰动。
It is pointed out that the main aspect of electric power quality problem is voltage sag.
指出电压暂降是现代电能质量的主要问题。
This thesis put up a new definition of voltage sag, which confirm the duration precisely.
该定义对电压凹陷的起止时间作了新的界定。
A momentary voltage DIP that lasts for a few seconds or less is classified as a voltage sag.
短时电压跌落持续几秒或更短可归属电压下跌。
And the method can be easily used to estimate other sensing elements affected by voltage sag.
方法能较容易的推广到其他敏感元件。
Dynamic voltage Restorer (DVR) is considered as the most effective device to compensate the voltage sag.
动态电压恢复器(DVR)是目前补偿电压凹陷最为有效的装置。
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。
Absrtact: Proposes a new voltage sag detection method based on an improved synchronous reference frame transform.
摘要：提出一种新的基于改进同步坐标变换的电压凹陷检测方法。
The energy stored in DC capacitor decides the compensation performance of DVR(Dynamic Voltage Restorer) on voltage sag.
直流电容器上所存储的能量大小直接决定了动态电压恢复器（DVR）对电压跌落补偿的能力。
For the operation of dynamic voltage restorer, fast and exact detection of voltage sag characteristics is very important.
快速、准确地检测出系统电压跌落的特征量是动态电压恢复器运行的前提条件。
So this paper mostly studies the algorithm of detecting voltage sag, voltage fluctuation and flicker in power quality problems.
因此，本论文确定将电能质量问题中的电压跌落和电压波动及闪变现象作为主要研究对象。
Aiming at the problem of voltage sag real-time detection, the time-varying Kalman filter with compensation component is presented.
针对电压凹陷的实时检测问题，提出了带补偿分量的时变卡尔曼滤波。
The experiment of researching character of the transducer during voltage sag is carried through, which shows the application value.
最后以变频器经受电压凹陷特性的研究示例说明该装置的应用价值。
This paper elaborates the main hazards of voltage sag as well as the solutions based on an instance of certain airport engineering.
通过某机场工程实例，详细阐述电压骤降主要危害及治理对策。
Voltage sag, as one of the important aspect of power quality, its research is just underway in our country, which has no criterion related.
而作为电能质量中的一个重要方面——电压凹陷，在我国的研究则刚刚起步，至今没有相应的国家标准。
The detection and location of the start point and end point of the voltage sag and swell is a key problem for the power quality monitoring.
对于短时低电压扰动发生、恢复时刻的检测与定位则是电能质量监测和统计中获取相关指标首先要解决的问题。
During the voltage sag, the reference values are replaced by those which are calculated from the actual values according to the forecast algorithm.
在电压扰动期间使用递推算法计算每一时刻的参考电压。
The precise decision of the time that the voltage sag occurs and recovers will be the first problem to be solve for the sag characteristic parameters.
电压跌落的发生、恢复时间的精确确定是获得跌落特性参数而首先要解决的问题。
Transient power quality issues have been becoming extrusive, such as voltage well, voltage sag and voltage interruption, and bring customers amount of loss.
暂态电能质量问题越来越突出，如电压跌落、骤升、短时断电等现象经常发生，给用户带来了很大的损失。
This paper puts forward the assessment on the real-time operation state of the specific equipment while voltage sag happens based on the energy impact on users.
在电网构成存在缺陷、电压凹陷严重影响电力用户的生产生活时，需要准确地衡量用电设备受影响状况以及电网用户的经济损失。
With the wide application of sensitive power electronic devices in industry, the power quality disturbance problems such as voltage sag and swell become more concerned.
随着各种敏感电力电子设备在工业中的广泛应用，诸如短时低电压、短时过电压等电能质量扰动问题已成为近年来各方面关注的焦点。
Voltage sag is a crucial power quality problem. Due to the unbalance fault present in occurrence of sags, it is more complicated to deal with the unbalanced voltage sag.
电压暂降作为一种电能质量问题，由于不对称故障的存在，使处理不对称电压暂降变得复杂。
The reason of voltage sag in electric power supplying system for Taiyuan satellite-launching center was introduced in detail and illustrated with examples in this article.
对太原发射中心供电系统电压凹陷产生的原因作了详细介绍与举例说明。
The dynamic voltage restorer is designed as unilateral energy flow equipment which can compensate continuous voltage sag or swell resulted from the voltage drop of power cable.
动态电压恢复器采用单向馈能电路结构，可以在能量单向流动的情况下，实现对因电缆压降而产生的电压暂降或暂升的持续补偿。
The dynamic voltage restorer is designed as unilateral energy flow equipment which can compensate continuous voltage sag or swell resulted from the voltage drop of power cable.
动态电压恢复器采用单向馈能电路结构，可以在能量单向流动的情况下，实现对因电缆压降而产生的电压暂降或暂升的持续补偿。
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