电力系统及其自动化学报2026，Vol.38Issue(8)：125-136,12.DOI:10.19635/j.cnki.csu-epsa.001832
晶闸管辅助式有载分接开关的Sen变压器谐波模型
Harmonic Model of Thyristor-assisted On-load Tap Changer Based Sen Transformer
摘要
Abstract
To address the difficulty in accurately modeling and uniformly analyzing the complex harmonic characteris-tics of a thyristor-assisted on-load tap changer based Sen transformer under switching and fault conditions,a harmonic model based on an extended T-type equivalent circuit and a state-space method is proposed.First,the electromagnetic coupling relationship among the primary and secondary windings and the excitation branch is characterized based on the extended T-type equivalent circuit,and the thyristor switching and reverse-recovery processes are taken into account to establish a time-domain dynamic model.Then,fast Fourier transform is combined to extract the amplitudes,phase an-gles and total harmonic distortion of individual harmonic components,enabling the unified solution of harmonic respons-es under complex operating conditions.Finally,the proposed model is validated using PSCAD/EMTDC simulations.Re-sults indicate that this model can accurately characterize the harmonic responses under quasi-steady-state,switching and fault conditions,and the harmonic distortion exhibits clear differences among different fault types.Therefore,the model can provide reliable technical support for the unified analysis of harmonic characteristics of the thyristor-assisted on-load tap changer based Sen transformer under complex operating conditions.关键词
晶闸管辅助式有载分接开关/Sen变压器/扩展T型等效电路/状态空间法/快速傅里叶变换Key words
thyristor-assisted on-load tap changer/Sen transformer/extended T-type equivalent circuit/state-space method/fast Fourier transform分类
信息技术与安全科学引用本文复制引用
张庆玲,荣娜,谢矿岩,吴青青,敖登明..晶闸管辅助式有载分接开关的Sen变压器谐波模型[J].电力系统及其自动化学报,2026,38(8):125-136,12.基金项目
贵州省科学技术基金资助项目(黔科合基础-zk[2025]面上599) （黔科合基础-zk[2025]面上599）
贵州省优秀青年科技人才培养计划基金资助项目(黔科合平台人才[2021]5645号). （黔科合平台人才[2021]5645号）
