南方电网技术2025，Vol.19Issue(1)：85-92,8.DOI:10.13648/j.cnki.issn1674-0629.2025.01.009
基于奇异值分解的电网谐振频率灵敏度分析方法
Sensitivity Analysis Method for Resonant Frequency of Power Grids Based on Singular Value Decomposition
摘要
Abstract
With the increasing penetration rate of power electronic equipment in power grid,the resonance phenomenon of power grid is becoming more and more serious,which seriously affects the normal operation of power equipment and the safe operation of power system.A resonance frequency sensitivity analysis method for power grid based on singular value decomposition(SVD)is proposed to address the limited applicability of existing modal frequency sensitivity calculation methods.The basis and process of the proposed method are given in detail.The non-homogeneous formula is used to solve the key variable expression,which avoids the influence of frequency resolution,improves the calculation accuracy,and effectively overcomes the deficiency that the modal frequency sensitivity cannot analyze the characteristics of branch current resonance.Numerical examples analysis shows that the proposed method can analyze the influence of network component parameters on the resonant frequency and quantize the influence of component parameters on the resonant frequency in two cases of low frequency and medium-high frequency resonance.关键词
电能质量/谐振分析/频率灵敏度/奇异值分解Key words
power quality/resonance analysis/frequency sensitivity/singular value decomposition分类
动力与电气工程引用本文复制引用
朱远哲,要若天,王玲,白浩,李巍,杜婉琳,徐敏..基于奇异值分解的电网谐振频率灵敏度分析方法[J].南方电网技术,2025,19(1):85-92,8.基金项目
国家自然科学基金资助项目(U22B2096) （U22B2096）
中国南方电网有限责任公司科技项目(GDKJXM20210168(036100KK52210068)).Supported by the National Natural Science Foundation of China(U22B2096) （GDKJXM20210168(036100KK52210068）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(GDKJXM20210168(036100KK52210068)). （GDKJXM20210168(036100KK52210068）
