常見非線性設(shè)備的諧波組合特性分析
 

姜慶飛，楊冠魯
（華僑大學(xué) 信息科學(xué)與工程學(xué)院，福建 廈門 361021）
 

    摘 要：按照低壓配電網(wǎng)中常見的單相非線性負(fù)荷分布情況，對這些諧波源進行不同的組合運行并采集數(shù)據(jù)，分析不同組合運行方式下的諧波狀況。引入分散系數(shù)的概念，通過大量的實驗數(shù)據(jù)來分析由不同類型諧波源諧波特性的差異所引起的分散效應(yīng)。分析結(jié)果表明，由于諧波特性的差異，非線性負(fù)荷之間普遍存在諧波消減的現(xiàn)象，且產(chǎn)生分散效應(yīng)一方面是由于各次諧波的相位差異，另一方面幅值的差異也決定了各負(fù)荷產(chǎn)生分散效應(yīng)的權(quán)重大小。
    關(guān)鍵詞：非線性負(fù)荷；諧波源；分散效應(yīng)；諧波特性
    中圖分類號：TM714     文獻標(biāo)識碼：B     文章編號：1007-3175(2017)05-0019-04
 

Harmonic Combination Characteristics Analysis of Common Nonlinear Equipment

 

JIANG Qing-fei, YANG Guan-lu
（College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China）
 

    Abstract: According to the common single-phase nonlinear loads distribution in the low-voltage distribution network, the harmonic sources were in different combinations of working and collecting data. This paper analyzed the harmonic conditions under the different combination mode of operation. This paper introduced the concept of diversity factor. A large number of experimental data were used to analyze the dispersing effect caused by the differences of harmonic source characteristics. The analysis result shows that because of the harmonic characteristic differences, there generally exists harmonic subduction between nonlinear loads. On the one hand, the produced dispersing effect is caused by the phase discrepancy of each harmonic, on the other hand, the amplitude discrepancy decides the weight size of dispersing effect caused by loads.
    Key words: nonlinear load; harmonic source; dispersing effect; harmonic characteristic
 

參考文獻
[1] ROBERT Plow.Effect of switch mode power supply harmonic currents on building power systems and stand-by engine alternators[C]//16th International Telecommunications Energy Conference，1994，22：668.
[2] AHMED E E, XU W, ZHANG Guibin.Analyzing systems with distributed harmonic sources including the attenuation and diversity effects[J]. IEEE Transactions on Power Delivery，2005，20(4)：2602-2612.
[3] XU W.Status and future directions of power system harmonic analysis[C]//IEEE Power Engineering Society General Meeting, Denver, Colorado USA，2004，1：756-761.
[4] 高潔. 諧波源組合優(yōu)化的研究[ D ] . 保定：華北電力大學(xué)，2012.
[5] UMEH K C, MOHAMED A, MOHAMED R.Determining harmonic characteristics of typical single phase non-linear loads[C]//Student Conference on Reaserch and Development，2003：413-419.
[6] MANSOOR A, GRADY W M, CHOWDHURY A H.An investigation of harmonic attenuation and diversity among distributed single-phase power electronic loads[J].IEEE Transactions on Power Delivery，1995，10(1)：467-473.