【摘要】 为了降低谐振分析的复杂度，减少计算量从而提高计算效率，提出一种配电网谐波谐振改进模态分析法。该方法根据网络导纳矩阵行列式特性及其随频率的变化规律，引入曲线拟合方法来确定配电网谐振频率，并利用模态分析法确定谐振信息。仿真分析及实测数据验证结果表明：应用所提方法对配电网进行谐振分析可显著提高配电网谐波谐振分析的计算速度，降低谐振分析难度。更多还原

【Abstract】 In order to reduce the complexity of resonance analysis and the amount of calculation,and improve the efficiency of calculation,this paper proposes an improved mode analysis method of harmonic resonance in distribution networks. According to the determinant characteristics of the admittance matrix and its variation with frequency,a curve fitting method is introduced to determine the resonant frequency of the distribution network,and then the resonant information is determined by the modal analysis method. The results of simulation analysis and test data verification show that the proposed method can significantly improve the calculation speed of harmonic resonance analysis and reduce the difficulty of harmonic analysis.更多还原