發(fā)布時間：2019-02-22 12:09

【摘要】：隨著非線性負(fù)荷的廣泛應(yīng)用,電網(wǎng)中的諧波問題日益嚴(yán)重,實(shí)現(xiàn)對諧波的準(zhǔn)確測量與分析意義重大。為降低對稱三相電路的諧波分析復(fù)雜度,提出了基于諧波信號的alpha-beta平面合成曲線周期特性的諧波成分分析方法。該方法首先對單相電量做alpha-beta變換并求取合成曲線的模長及其周期,其次依據(jù)合成曲線周期分析電路中可能存在的諧波成分,最后結(jié)合諧波信號的總諧波畸變率等信息計算所存在諧波的諧波含有率。分析表明,當(dāng)合成曲線模長的周期小于四分之一工頻周期時,其計算量約為傅里葉分析方法的三分之二。通過對算例的運(yùn)算驗證了所提方法的有效性。
[Abstract]:With the wide application of nonlinear load, the harmonic problem is becoming more and more serious, so it is very important to measure and analyze harmonics accurately. In order to reduce the complexity of harmonic analysis in symmetric three-phase circuits, a harmonic component analysis method based on the periodic characteristic of alpha-beta plane synthesis curve based on harmonic signal is proposed. In this method, first of all, the single phase electric quantity is transformed by alpha-beta and the module length and its period of the synthesis curve are obtained. Secondly, the harmonic components in the circuit are analyzed according to the cycle of the synthesis curve. Finally, the harmonic content rate of harmonics is calculated by combining the total harmonic distortion rate of harmonic signal and other information. The analysis shows that when the period of the module length of the synthetic curve is less than 1/4 power frequency period, the calculation amount is about 2/3 of that of the Fourier analysis method. The effectiveness of the proposed method is verified by an example.
【作者單位】： 武漢理工大學(xué)華夏學(xué)院;中國電力科學(xué)研究院;國網(wǎng)江西省電力科學(xué)研究院;
【分類號】：TM711

【相似文獻(xiàn)】

相關(guān)期刊論文 前9條

1 孟慶琛;對稱三相電路有功功率的一種簡易測量方法[J];電測與儀表;1988年06期

2 孟慶琛,張清森;對稱三相電路參數(shù)的測量與計算[J];電測與儀表;1990年02期

3 李文祥;;對稱三相電路電能的單表測法[J];焦作礦業(yè)學(xué)院學(xué)報;1993年04期

4 范福玲,魏平俊;對稱三相電路中的諧波及其對測量有功功率的影響[J];周口師范高等�？茖W(xué)校學(xué)報;2001年05期

5 田社平;陳洪亮;;關(guān)于對稱三相電路無功功率測量的討論[J];電氣電子教學(xué)學(xué)報;2009年04期

6 溫雅祥,李景堯;對稱三相電路中星—角連接的分析與計算[J];克山師專學(xué)報;2001年03期

7 李紅，黃開勝，，楊杰;對稱三相電路無功功率測量[J];廣東機(jī)械學(xué)院學(xué)報;1995年03期

8 ;研究生考題選登[J];電氣傳動;1987年06期

9 張斌;;無功功率的測量分析[J];機(jī)電信息;2011年33期

本文編號：2428213