【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(duì)諧波的準(zhǔn)確測(cè)量與分析意義重大。為降低對(duì)稱三相電路的諧波分析復(fù)雜度,提出了基于諧波信號(hào)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(duì)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(hào)的總諧波畸變率等信息計(jì)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(shí),其計(jì)算量約為傅里葉分析方法的三分之二。通過對(duì)算例的運(yùn)算驗(yàn)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(hào)】：TM711

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1 孟慶琛;對(duì)稱三相電路有功功率的一種簡易測(cè)量方法[J];電測(cè)與儀表;1988年06期

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

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8 ;研究生考題選登[J];電氣傳動(dòng);1987年06期

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