The main circuit of a novel neutral harmonics current conditioner and its control principle are described.
介绍了一种新型低耐压中性线谐波治理装置的主电路结构，并对其工作原理进行了分析。
The paper presents the causes of harmonics current and overload hazard of neutral line and phase line by harmonics in electrical line.
阐述了电气回路中谐波电流产生的原因及其引起中性线和相线过载的危险。
Since more and more nonlinear equipments have been used in the power supply network, the generated high harmonics current leads to waveform distortion of voltage and current in the supply network.
由于电网中非线性设备的使用日益增多，所产生的高次谐波电流大量注入电力线路中，使得电网电压、电流波形发生畸变。
The study on shunt active power filter, which is a novel device compensating harmonics and reactive power current simultaneously, is the focus in the field of power quality control.
并联有源电力滤波器作为一种新型的谐波、无功综合补偿系统，是电能质量控制领域中的研究热点。
Harmonics, reactive power, voltage flicker and negative-sequence current of power grids can affect the power quality and harm the power equipment badly.
电网中存在谐波、无功、电压闪变及负序电流等问题，严重影响电能质量，危害电力设备。
The metering error considers the non linear effect of the voltage coil and current coil in watt hour meter under different order of harmonics and different distortion degree of input waveform.
计量误差考虑了电度表电压线圈和电流线圈在不同的谐波次数以及谐波大小时的非线性效应。
One of the major effects of power system harmonics is to increase the current in the system.
谐波对电力系统的主要影响之一是增加系统中的电流。
The SAPF prototype can compensate harmonics and reactive well under varies load conditions, especially in the case of a distorted or unbalanced current of power supply.
并联型有源电力滤波器适用于多种负载条件下的谐波和无功补偿，尤其是能应用于电源电流畸变和不平衡条件下。
Theoretical analysis and experimental measurement for current harmonics, the results are agreement.
对电流谐波进行理论分析和实验测量，二者结果吻合。
This paper introduces a single-bridge current source rectifier, which eliminates 5th and 7th harmonics adopting the technology of Selective Harmonic Elimination(SHE).
介绍了一种单桥电流源型整流器，运用特定谐波消除技术消除其5次和7次谐波。
A unified model for harmonics and reactive current closed-loop or open-loop detection was established based on instantaneous reactive power theory.
基于瞬时无功功率理论建立了谐波及无功电流检测系统闭环、开环的统一模型。
In fact, the rectified circuit with filter condenser in the direct current side is also the serious pollution source of the harmonics.
而实际上，直流侧含滤波电容的整流电路也是污染严重的谐波源。
This deviation from perfect sinusoids is usually expressed in terms of harmonics distortion of the voltage and current waveforms.
这种偏离完全正弦的畸变称为电压、电流波形的谐波畸变。
The fractal dimension of loss current waveform increases because of the growth of harmonics.
谐波分量的出现使损耗电流信号的分形维数增加。
Then, adopting reactive current margin and harmonics as control and protection variable, an expert system was formed to control thyristor switched capacitor.
以无功电流差补值作为控制参量，并以高次谐波电流作为谐振保护信号，由专家系统给出投切无功补偿电容的控制指令。
By using the time variant modulation ratio method, the harmonics can be eliminated and a sinusoidal and balanced output voltage or input current is obtained.
通过采用时变调制比的方法，可以消除不对称输入电压的影响，从而获得对称正弦输出电压或输入电流。
Research results:Degradation of XLPE cable by water trees gives rise to harmonics in the loss current.
研究结果：XLPE电缆的水树的劣化使得损耗电流中谐波分量增加。
Active Filter access point and then after the line current harmonics back to the company as the regulator's input, adjusting the feedforward control error.
再将有源滤波器接入点后的线上电流的谐波分量反馈回来，作为调节器的输入，调整前馈控制的误差。
Derived the formula for computing quadratic harmonics of output current in the single phase unit power factor ac DC converter based on analysis of the circuit module of the equivalent current source.
在基于对等效电流源电路模型分析的基础上，推导出了单相单位功率因数变流器输出电流二次谐波的计算公式，将输出二次谐波电流正、反向交替注入交流输入侧来抵消电流中的谐波。
Power system Network Node thousands of mixed clouds, active power, reactive power flow, high harmonics, negative sequence current of the speed of light in the system-wide communication.
电力系统中网络结点千百个交织密布，有功潮流、无功潮流、高次谐波、负序电流等以光速在全系统范围传播。
The paper analyzes the current quality of energy according to toth the managements of reactive power voltage and harmonics monitoring in Guangxi Electric power Grid.
从广西主网无功电压管理及谐波监督管理两方面对广西电网电能质量现状进行分析，指出存在问题，提出了改善电能质量的对策。
The simulation and experimental results show that this system can restrain harmonics of three-phase rectifier of AC-side input current, reduce the output voltage ripple and decrease the volume.
仿真和实验结果表明该系统能够有效抑制三相整流电路交流侧输入电流的谐波，降低输出电压纹波，减小整机体积。
This paper presents a novel detecting method for harmonics and reactive current in single-phase active power filter based on calculation of the real part of the fundamental load current.
本文提出了一种单相有源电力滤波器谐波和无功电流检测的新方法—负荷电流基波有功分量法。
However, because of its nonlinear characteristics, the switching power supply resulting input current contains a large number of odd harmonics, which cause serious harmonic pollution for the grid.
然而由于其非线性的特性，导致其输入电流中含有大量奇次谐波，对电网造成了严重的谐波污染。
Not only can this device monitor vibration and noise, but also can monitor voltage, current, power and harmonics according to actual needs.
该装置不但可以对振动、噪声进行监测，还可以根据实际需要对电压、电流、功率、谐波等进行监测。
Its key technology is the current compensation object detected in the other harmonics and reactive current component.
它的关键技术是检测出补偿对象电流中的谐波和无功等电流分量。
Thus, a direct bus current can be detected precisely and an upper harmonics component is inhabited.
由此，高精度地检测直流母线电流，抑制高次谐波成分。
Shunt active power filter (SAPF) is very fit to compensate current source harmonics.
并联型有源电力滤波器可较好地补偿电流型谐波源产生的谐波。
Using the MATLAB, this paper introduces an application in harmonics and reactive-current compensation for an active filter system, which based on the adaptive simulink in signal prediction.
本设计运用MATLAB语言实现信号预测模型的自适应仿真在有源滤波系统的谐波和无功电流补偿中的应用。
Using the MATLAB, this paper introduces an application in harmonics and reactive-current compensation for an active filter system, which based on the adaptive simulink in signal prediction.
本设计运用MATLAB语言实现信号预测模型的自适应仿真在有源滤波系统的谐波和无功电流补偿中的应用。
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