基于模态分析的谐波谐振评估方法  

A MODAL ANALYSIS METHOD FOR HARMONIC RESONANCE ASSESSMENT

作　　者：徐文远[1] 张大海[1] 

机构地区：[1]山东大学电气工程学院,山东省济南市250061

出　　处：《中国电机工程学报》2005年第22期89-93,共5页Proceedings of the CSEE

摘　　要：谐波谐振在电力系统中经常表现为高电压。文中研究发现这种谐振现象与网络导纳矩阵的奇异性有关,而这种奇异性是由于矩阵的一个特征根趋近于零造成的。因此通过分析特征根的性质,就可以得到有关谐振机理和程度的信息。基于以上研究结果,该文提出了一种称为“谐振模态分析”的技术。理论分析和算例研究证明了该方法是进行电力系统谐波分析的有效工具。Harmonic resonance often manifests as high voltages in a power system. It was found that such resonance phenomenon is associated with the singularity of the network admittance matrix. The singularity, in turn, is due to the fact that one of the eigenvalues of the matrix approaches zero. By analyzing the characteristics of the eigenvalue, one can find useful information on the nature and extent of the resonance. Based on the results, a technique called Resonance Mode Analysis is proposed. Analytical and case study results have confirmed that the proposed method is a valuable tool for power system harmonic analysis.

关 键 词：电力系统 电能质量 谐波 谐波谐振 模态分析 特征根 

分 类 号：TM715[电气工程—电力系统及自动化]