In order to supervise the system status and restrain harmonic disturbance, accurate harmonic measure has become a pivotal problem.
为了监测系统状态、抑制谐波干扰,对其进行准确测量成为一个关键性的问题。
The system can measure the harmonic in HV power network, and avoid the problem of harmonic measure signal distortion caused by capacity type voltage transformer (CVT).
应用该测量系统测试高压电网中的谐波,可以避免因高压电网中取自电容式电压互感器(CVT)的谐波测量信号失真的问题。
Harmonic measure method is the key of the measurement. In this paper, the harmonic measure method which based on the multiple frequency rotate transform theory is researched and analyzed.
谐波测量方法是谐波测量的核心环节,本文对基于倍频旋转变换理论的谐波测量方法进行了研究分析。
This paper presents an intelligence test set built by microcomputer technics to monitor and measure the harmonic and surge voltages in the power network and source, on-line and with a real time.
本文提出利用微机技术构造一种在线实时监视和测量电网、电源客观存在的谐波电压和浪涌电压的智能测试仪。
Harmonic analysis measure method.
谐波分析测量法。
The harm of the high degree harmonic wave in power system was introduced and the selection of prevention and the measure of controlling the harmonic interference were put forward.
本文简要介绍电力系统中高次谐波的危害,以及选择的防治、抑制谐波干扰的措施。
So it is necessary to measure power parameters and harmonic reliablely and in real time.
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。
The anti disturbance measure and harmonic modification are also discussed.
最后讨论了抗干扰措施、谐波修正等问题。
A new method be gived to measure MOA′s resistive fundamental harmonic leakage current(RFHC)by over-zero & harmonic analysis methods accurately.
给出了采用过零法和谐波分析法相结合来精确测量金属氧化物避雷器(MOA)阻性电流基波的新算法。
Using the VI program to measure the harmonic of switching power supply.
利用该VI程序测量开关电源输出量的谐波;
The equipment can measure and analyse harmonic real-timely.
本装置可以对谐波进行实时测量分析。
The method to measure body's inertial mass is proposed by measuring period of vibration with the integrated hall switch sensor, when spring oscillator is in situation of simple harmonic vibration.
提出了在弹簧振子作简谐振动时,利用集成开关型霍尔传感器测量振动周期,以进一步测量物体惯性质量的方法。
Through reason and harm analysis which produces to the rail transit power supply system higher harmonic, discusses emphatically to the power supply system harmonic suppression measure.
通过对轨道交通供电系统高次谐波产生原因及危害的分析,着重探讨对供电系统谐波抑制的措施。
Conclusions TTE with tissue harmonic function can be used to accurately measure the size of hard-rim ASD and is a feasible, effective and simple method for guiding ASD occlusion.
结论tte结合组织谐波功能可以准确测量硬缘asd大小,是指导A SD封堵的可行、有效、简便方法。
The results show that the harmonic pollution of power grid is the basic reasons leading to the unit interconnected failure and the proposed measure is effective.
结果表明,电网谐波污染是机组并网失败的根本原因,并验证了该措施行之有效。
Power electronics broad application in power systems brings serious harmonic pollution. This paper introduces harmonic harm, the measure of restraining harmonic and the basic principle of filter.
电力电子装置的广泛应用,给电力系统造成了一定的谐波污染,文中简要论述谐波的危害、谐波的治理措施及无源滤波器和有源滤波器的基本原理。
For public distribution system the total harmonic distortion is a clear measure of supply quality.
在公用供电系统中,整体的谐波失真是供电质量的一个重要指标。
Frequency capacitive dividers are used to measure the output power frequency test equipment peak, RMS, Harmonic, also doubles as a coupling capacitor.
工频试验变压器主要用于测量工频试验设备的输出峰值、有效值、谐波,亦可兼作耦合电容器。
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.
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。
A magnitude of a third harmonic distortion of the waveform sequence can be used to measure distortion in the output.
该波形序列的第三谐波失真幅度可以被用来测量输出中的失真。
Finally, an improved algorithm for fractional harmonic analysis is used to reduce the leakage, the result of the simulation shows it can heighten the precision of the measure of the parameter.
最后,对于非整数次谐波的测量用改进算法来减少频谱泄漏,仿真结果表明,改进算法能较大的提高参数测量的精度。
Meanwhile, how to use this device to measure power system harmonic is discussed also. Using U900F Instrument can improve the precision of measure and make the measure fairly simple.
并阐述了如何利用该仪器实现供电系统谐波的自动测量,实践证明,U900F便携式电能质量分析仪的应用不但简化了谐波测量,同时也提高了测量精度。
A distorted sine signal is simulated in this paper, and the harmonic analysis is carried out through the above measure, revealing the state of its basic wave and harmonic waves.
该系统模拟生成一畸变正弦信号,并运用该系统实现谐波的在线监测分析,得出其基波与谐波的情况。
This paper analyzed the problem of harmonic wave, matching of load and calorification for inverters in running and made the relatively measure.
本文针对变频器运行过程中存在的谐波问题、负荷匹配以及发热问题进行分析,并且提出相应的解决方案。
The paper analyzes the harm of high harmonic and provides the restraint necessity and measure.
摘 要分析了高次谐波在诸多方面产生的危害,提出抑制高次谐波的必要性及具体措施。
Power quality, Measure, Power quality monitor, Harmonic analysis.
电能质量,测量,电能质量监测,谐波分析。
And the second-harmonic intensity auto-correlation method is widely used to measure the ultrashort pulse wave.
二次谐波强度自相关法是被广泛使用的超短光脉冲波形测量的方法。
No matter how many beats there are in a measure, other notes besides the downbeat may be important for melodic, harmonic, coloristic, or rhythmic reasons;
在一小节里不管有多少拍,除其它音符外,第一拍对曲子的旋律、和声、色彩或节奏的选择可能最重要的;
No matter how many beats there are in a measure, other notes besides the downbeat may be important for melodic, harmonic, coloristic, or rhythmic reasons;
在一小节里不管有多少拍,除其它音符外,第一拍对曲子的旋律、和声、色彩或节奏的选择可能最重要的;
应用推荐