南方电网技术2024，Vol.18Issue(7)：55-62,8.DOI:10.13648/j.cnki.issn1674-0629.2024.07.007
基于导纳频响特性的次同步振荡特征值的快速估算
Fast Estimation of SSO Eigenvalues Based on Admittance Frequency Response Characteristics
摘要
Abstract
Sub-synchronous oscillation(SSO)has always been a widely concerned stability issue in power systems.Currently,there are multiple methods for analyzing SSO,such as eigenvalue analysis method and frequency-domain analysis method(such as imped-ance analysis method),but each method has its own advantages and disadvantages.Combing the advantages of frequency-domain analysis easy to quantify and eigenvalue analysis methods easy to model,a new method for directly estimating the SSO eigenvalues is proposed based on the admittance frequency response characteristics.The method can directly estimate the SSO eigenvalues based solely on the extreme features(including extreme point frequency and slope information)of the frequency response curves of the system aggregated admittance and admittance integral,making the calculation simple and fast.The effectiveness of the proposed method is verified by comparing it with the results of eigenvalue analysis tool in MATLAB.The method is suitable for quantitative analysis of different types of SSO,such as sub-synchronous torsional oscillation in the conventional power generation,sub/super-synchronous oscillation in the renewable energy generation,and composite sub-synchronous oscillation in the conventional and renew-able energy power bundling delivery.The analysis results have all been verified by PSCAD/EMTDC simulation.关键词
次同步振荡/导纳特性/频域分析/特征根/风火打捆Key words
sub-synchronous oscillation/admittance characteristic/frequency domain analysis/eigenvalue/wind and thermal power bundling分类
动力与电气工程引用本文复制引用
赵爽,袁豪,王志敏..基于导纳频响特性的次同步振荡特征值的快速估算[J].南方电网技术,2024,18(7):55-62,8.基金项目
国家重点研发计划资助项目(2022YFB2403504).Supported by the National Key Research and Development Program of China(2022YFB2403504). （2022YFB2403504）
