电压扰动

一种无时延的改进d-q变换在动态电压扰动识别中的应用

Application of improved d-q transform without time delay in dynamic voltage disturbance identification

大型风力发电机在电网电压扰动下的特性

Characteristics of large scale wind turbine system under voltage disturbance from power grid

针对电网电压扰动和dq坐标系下三相VSR数学模型的耦合性，本文提出了一种前馈解耦控制方法。

Because of fluctuation of power system and the coupling of mathematical model in dq coordinate system , this paper presents a current feedforward decoupling control method .

但是V2控制对输入电压扰动的抑制能力介于电流型和电压型控制之间。

The dynamic characteristic when input voltage changing of the V2 control is better than that of voltage mode control and worse than current mode control in DCM .

针对电压扰动中难以正确区分的谐波与高、低频振荡扰动，提出了一种基于Prony算法的识别方法。

This paper proposes a new method based on Prony analysis to recognize the harmonics , high and low frequency oscillation in voltage disturbances , which are normally hard to be identified properly .

提出了基于Hankel矩阵奇异值分解技术的短时电压扰动检测与定位方法。

For the start point , the time-stamp is very exact . ( 3 ) A detection and time-stamp method of instantaneous voltage disturbances based on Hankel matrix singular value decomposition is proposed .

本文主要探讨电力系统电压扰动类型识别的研究方法和装置设计。提出了一种dq变换与Prony分析方法相结合的方法，对电力系统电压扰动加以识别，同时给出相应扰动的参数。

We will talk mainly about identification of power system disturbance , and we originate a method using dq transform and Prony Analysis to realize the identification of power system disturbance and calculate the parameters of each disturbance .

基于数学形态学与动态时间扭曲的电压扰动分类

Classification of Voltage Disturbances Based on Mathematical Morphology and Dynamic Time Warping

采用有源电压扰动法进行孤岛效应的判断及处理。

Using the active voltage perturbation to detective and deal with islanding effect .

准周期电压扰动下电力系统中的浑沌现象

Chaos in the almost periodic forcing electrical power systems

这些电压扰动和电压降将严重影响用户端的电能质量。

These voltage perturbations along with voltage sag can strongly degrade customer power quality .

矩阵式变换器驱动异步电机调速系统抑制输入电压扰动的研究

Study of Input Voltage Anti-Disturbance Control of Matrix Converter Fed Induction Motor Drive System

电网暂态电压扰动信号的监测是关系到电能质量改善的首要问题。

Monitoring of transient voltage fluctuation is a problem concerned in power quality improving .

电网暂态电压扰动的监测与评价

The Monitoring and Evaluation of Transient Voltage Fluctuation

在测定电压扰动幅度方面，提出了使用基于小波变换系数的电压扰动幅度确定法则。

The CWT coefficient - based law is introduced for detecting voltage disturbance range .

仿真结果成功的验证了预测函数控制在定子侧电网电压扰动的工况下改善控制效果的正确性和有效性。

Through the simulation , the control performance of PFC under the stator-side grid voltage disturbance conditions is verified correct and successful .

对各种电压扰动进行检测和识别，并根据不同的扰动采取有效措施，是提高电能质量的前提，具有重要意义。

The detection , identification and actions taken decided by the corresponding disturbance are the precondition of power quality improvement , of great importance .

利用小波多分辨率分析方法对去噪后的扰动信号进行检测，更精确地提取出了暂态电压扰动信号的特征值。

Wavelet multi-resolution analysis method was used to detect de-noising disturbance signal , character values of the transient voltage disturbance signal were extracted more precisely .

开关电源和线性电源相结合的混合电源可以提高动态响应速度，但是传统的控制方式不能有效抑制输入电压扰动的影响。

A hybrid power supply is composed by both a linear and a switching source connected in parallel and it can improve the dynamic response .

在电压扰动期间使用递推算法计算每一时刻的参考电压。

During the voltage sag , the reference values are replaced by those which are calculated from the actual values according to the forecast algorithm .

为实现电压扰动的抑制与补偿，需要对电压扰动进行自动的识别，以便有针对性地采取措施。

In order to realize the suppression and compensation of voltage disturbances , voltage disturbances need to be identified properly so that suitable actions can be taken .

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。

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 .

进行空调试验，分析其负荷特性，其中包括静特性、停机特性、启动特性以及电压扰动特性。

On the basis of the test about air conditioner , its load characteristics are analyzed , including the static characteristics , drop out characteristics , starting characteristics and its responses to voltage dips .

该软件在无人机半物理仿真试验中完成了飞控计算机电源的供给与耐电压扰动性能的测试，对今后的测控软件开发具有重要参考价值。

The software provides power and implements voltage test for the flight control computer in the UAV ground half entity simulation trial , which is valuable for other development of measuring and control software .

本文期望通过该软件得到的暂态电压扰动现象的信息，能够为后期进一步分析暂态电能质量问题以及采取合理措施提高电能质量提供有效的依据。

The paper anticipates that this software can provide reliable and valid data and information of transient voltage fluctuation in order to farther analyze transient problems of power quality and take measure to improve power quality .

在工业生产中，大量非线性和冲击性电子设备的应用，给电网带来了大量谐波、电压扰动、闪变等污染，造成电能质量的降低。

In industrial production , the application of non-linear and impact of electronic equipment bring a large number of harmonics , voltage fluctuation and flicker pollution to the grid , resulting in the reduction of power quality .

根据典型电压扰动的特征和分类特点，提出了扰动录波启动信号的产生方法，通过仿真验证了方法的可行性和正确性。

To capture the disturbance voltage waveforms , the generating method of start signal for waveform-recording is proposed on the basis of characteristics and classification of typical voltage disturbances , and its feasibility and validity are illustrated by simulation .

对暂态电压扰动的分类结果表明，上述改进的暂态电能质量扰动分类方法分类特性良好、适用范围较广。

, are simulated , classified and recognized , the classification results of transient voltage disturbances show that the proposed two classification methods for transient power quality disturbances possess good classification characteristics and can be applied in wider scope .

由于现代科技的发展，非线性负载和电力电子装置应用广泛，它们对电压扰动极其敏感，几个周波的电压扰动可能导致它们失灵或彻底损坏。

With the development of modern science and technology , the nonlinear loads and power electronics equipment are widely applied . Those loads are generally sensitive to electrical disturbances which may cause them to malfunction or even to fail .

针对电网暂态电压扰动信号的识别及捕获进行研究，基于虚拟仪器技术设计出了监测软件，通过仿真及在线运行测试实验验证了该软件的可行性及可靠性。

This paper researches on the identification and acquisition of the signals of transient voltage fluctuation . Based on virtual instrument technology , a monitoring software is designed , whose feasibility and reliability are verified by both simulation and on-line monitoring test .