电压降落

为了减少大规模配电网潮流分析的计算量，在分析了等效电压降落模型法（VDM）和等效线损模型法（LLM）的基础上，提出了二者相混合的配电网潮流算法。

In order to reduce the calculation amount of power flow in large-scale distribution networks , a method of power flow algorithm hybrid model of voltage drop model ( VDM ) and line losses model ( LLM ) is presented after analyzing VDM and LLM .

因为它的阻抗增加它的电压降落增加，虽然小可能被测量没有困难。

As its resistance increases its voltage drop increases and though small can be measured without difficulty .

第三章以一配电系统为例，利用MATLAB软件对该新型FCL进行仿真，结果证明该装置可以有效地限制故障电流，减少电压降落，提高电能质量。

A distribution system is simulated by the means of MATLAB in chapter 3 . The obtained result shows the device can effectively limit the fault current , decrease the sag of voltage , and improve the power quality .

在所有的电力质量问题中，几乎90%为电压降落与瞬间停电。

Nearly 90 % of all power quality problems are voltage sags and momentary outages .

关于电压降落和电压损失之区别的讨论

Discussion on Differences Between Voltage-Drop and Voltage-Loss

在满足有功和无功功率的平衡、电压降落及电流限制的约束条件下，建立了以投资及损耗最小为目标函数的农网网架的更新模型。

On the basis of satisfied active and reactive power balance , voltage quality , and current limit , and lowest power loss , the renewal model is presented according to the object function of minimum investment and lowest power loss .

高压线路保护中，当系统发生故障时，由于电压的降落，CVT将产生暂态效应，可能引起正方向距离保护的暂态超越。

In the protection of HVPS ( High Voltage Power Supply ), the transient effect of CVT time by the fall of voltage in fault is likely to lead to the transient overreach of the protection .

为了克服以往一些检测方法的缺陷和快速、准确地检测出电网电压的降落、升高、不对称以及谐波等各种干扰，提出了一种以广义瞬时无功理论为基础的改进的检测方法。

For he sake of overcoming disadvantages of former detecting methods , a improved detecting method is been brought forward based on general reactive power theory .

随着功耗的增加和电源电压的降低，电压降落变得越来越严重。

As the increase of power dissipation and the decrease of power voltage value , voltage drop becomes more and more serious .

提出一种基于检测点产生的瞬时负荷统计特性快速确认扰动源的方法，展示了该原理在谐波、电压凹陷、电压膨胀、瞬间电压降落四种扰动，在MATLAB下的仿真和计算结果。

This paper provides a new method for fast qualitatively detecting the disturbance sources , which is based on their statistical instantaneous characteristics . There are four examples imitated under MATLAB including harmonics , voltage sag , voltage swell , short-time transform of voltage dip .