研究和开发了一套集成化电力谐波智能监测系统。
In this paper, a set of harmonics-monitor is researched and developed.
电网中非线性负载引起的电力谐波会加剧配电变压器损耗，造成电能的巨大浪费。
Power harmonics caused by nonlinear load increased distribution transformer's additional loss which causing a huge waste of energy.
目前已有的电力谐波监测系统大多采用基于快速傅立叶变换（FFT）的检测方法。
Most of present harmonics-monitors adopt the technique of Fast Fourier Transform (FFT) to detect harmonics. However, FFT needs longer time to collect and process the signal.
提出了一种适于高精度实时电力谐波分析的自适应调整采样频率的电网频率跟踪算法。
An adaptive sampling frequency tracking algorithm which adapt to realization of precise real time harmonic analysis is introduced.
其运行特性以及可能存在的电力谐波、系统稳定性等一系列问题是人们广泛关注的课题。
Its operation characteristics and possible problems, such as power harmonic and system stability, are widely studied in the whole world.
另外，快速傅立叶变换仅适用于分析平稳渐变的信号，不能适应负荷动态变化的电力谐波检测。
In addition, FFT is applicable to analyze gradually-changed signals instead of detecting harmonics when the load breaks.
研究了基于FFT理论的电力谐波检测原理，提出一种基于相位差校正法的高精度电力谐波检测方法。
After studying on the measurement principle of power system harmonic based on FFT theory, this paper presents a high-accuracy method based on phase difference correcting to measure the harmonic.
介绍了江苏无锡地区电网谐波的产生，分析了电力谐波产生的原因以及对输电线路、电器设备等的影响。
The paper introduces the causes of harmonic wave and its impact on transmission lines and electric equipments in Wuxi grid.
电力谐波干扰导致电气设备异常和事故有逐年增长的趋势，电力系统谐波已成为威胁电力系统和其它用电负荷安全运行的“电力公害”。
The growing tendency of the abnormity and accident which caused by the harmonic wave has already become the social harmfulness in the power system.
在这种情况，就需要对电力参数和谐波情况进行准确、实时地检测。
So it is necessary to measure power parameters and harmonic reliablely and in real time.
认为谐波源来自系统侧，除了非线性负荷外，主要是由大型电力变压器激磁电流所造成。
The harmonic comes from power system side, which is caused mainly by exciting current of the large capacity transformer besides the nonlinear loads.
减小这种影响的一个办法是，将由电力电子负载产生的谐波电流或者电磁干扰滤除。
One approach to minimize this impact is to filter the harmonic currents and the electromagnetic interference(EMI) produced by the power electronic loads.
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。
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.
提出了一种新型的有源电力滤波器电流检测和控制方法，在补偿谐波电流的同时还可以进行无功补偿。
A method of current detect and control for the new active power filter (APF) is presented, which has the ability of canceling harmonic and compensating reactive power at the same time.
间谐波是电力系统中一种特殊的谐波。
Interharmonics are special harmonic in electric power system.
提出了一种基于人工神经元网络(ANN)的电力系统谐波测量方法。
AN approach of measuring harmonics in power system based on artificial neural network (ANN) is put forward in this paper.
我国谐波的主要问题是电力系统与电气化铁道的协调问题。
The main harmonic problem in our country is consistency between utility and electrified railway.
有源电力滤波器是一种用于动态抑制谐波，补偿无功的新型电力电子装置。
The active power filter is a new kind of the power electronic plant restraining harmonic and compensating reactive power.
电力变流器和其他非线性负荷向电力系统“注入”谐波电流，引起一系列问题。
The power converters and other nonlinear loads "inject" the harmonic current into the power systems and cause a series of problems.
谐波是目前电力系统中存在的最普遍现象，是电能质量的主要指标。
Harmonic is the most general phenomenon in power system. And harmonic is the main index of power quality.
有源电力滤波器是一种用于动态抑制谐波，补偿无功的新型电力电子装置。
Active power filter is a new power electronic plant restraining harmonic and compensating reactive power.
随着谐波负荷的增加，电力系统的谐波污染日益严重。
Along with the harmonics loads increased, the harmonics pollution of the power system is increasingly serious.
有源电力滤波器用于动态抑制谐波和补偿无功，可以有效地改善电网质量。
Active power filter is used for dynamic harmonic suppressing and compensation reactive current, which can effectively improve power network quality.
谐波谐振在电力系统中经常表现为高电压。
Harmonic resonance often manifests as high voltages in a power system.
文章讨论了具有整流负载时电力系统的谐波潮流计算方法。
In this paper the harmonic power flow of power systems with rectifier busses is studied.
电力负荷的谐波响应可以用其集总效应来描述。
The harmonic response of electric loads can be characterized by their aggregate effect.
有源电力滤波器谐波检测中数字低通滤波器的设计是关键。
The key of active power filter harmonic detection is the design of digital low-pass filter.
为了克服小波固有的缺陷，本文构造了一种组合小波，并利用它实现了对电力暂态谐波信号含量及频率的准确检测。
To conquer the old wavelet inherent shortcoming, a combine wavelet is designed and used to realize the accurate detection to harmonic contents and frequency of power quality transient signals.
为了克服小波固有的缺陷，本文构造了一种组合小波，并利用它实现了对电力暂态谐波信号含量及频率的准确检测。
To conquer the old wavelet inherent shortcoming, a combine wavelet is designed and used to realize the accurate detection to harmonic contents and frequency of power quality transient signals.
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