本文選題：電壓不平衡度　切入點(diǎn)：相序分量　出處：《儀器儀表學(xué)報(bào)》2015年03期

【摘要】：采用IEC 61000-4-27所推薦方法進(jìn)行電壓不平衡度測(cè)量時(shí),復(fù)雜的開方運(yùn)算是不可避免的。提出一種電壓不平衡度的準(zhǔn)同步采樣快速測(cè)量方法,該方法首先采用準(zhǔn)同步采樣算法計(jì)算三相電壓相量(幅值和初相角),然后利用幾何原理將開方運(yùn)算轉(zhuǎn)化為三角函數(shù)計(jì)算,并最終利用代數(shù)多項(xiàng)式簡(jiǎn)化三角函數(shù)式,實(shí)現(xiàn)電壓不平衡度的快速、準(zhǔn)確測(cè)量。與IEC 61000-4-27所推薦方法相比,提出的電壓不平衡度的準(zhǔn)同步采樣快速測(cè)量方法避免了傅里葉變換和復(fù)雜的開方運(yùn)算,減少了運(yùn)算量。仿真和實(shí)際測(cè)量結(jié)果表明,電壓不平衡度的準(zhǔn)同步采樣快速測(cè)量方法與IEC 61000-4-27所推薦方法具有相同的測(cè)量準(zhǔn)確度,為電壓不平衡度的快速測(cè)量提供新的思路。
[Abstract]:Complex square operation is inevitable when using the method recommended by IEC 61000-4-27 to measure voltage unbalance. A fast quasi-synchronous sampling method for measuring voltage unbalance is proposed. In this method, the quasi-synchronous sampling algorithm is used to calculate the three-phase voltage phasor (amplitude and initial phase angle), then the square operation is transformed into trigonometric function calculation by geometric principle, and the trigonometric function formula is simplified by algebraic polynomial. Compared with the method recommended by IEC 61000-4-27, the proposed fast quasi-synchronous sampling method avoids Fourier transform and complex square operation. The simulation and actual measurement results show that the fast measurement method of voltage imbalance has the same accuracy as that recommended by IEC 61000-4-27, which provides a new idea for the fast measurement of voltage unbalance.
【作者單位】： 湖南大學(xué)電氣與信息工程學(xué)院;湖南省計(jì)量檢測(cè)研究院;
【基金】：國(guó)家自然科學(xué)基金(61370014)資助項(xiàng)目
【分類號(hào)】：TM933.2

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 曹暉,袁世英,易s，

本文編號(hào)：1675123