电网技术Issue(4)：1059-1066,8.DOI:10.13335/j.1000-3673.pst.2015.04.028
实际系统次同步谐振建模方法
Subsynchronous Resonance Modeling Method for Real Systems
摘要
Abstract
It cannot be ensured that the analysis results from the model established by traditional modeling method for subsynchronous resonance (SSR), could meet the demand on the accuracy in engineering practice. This paper investigates the major reason that the frequency dependent characteristics of the equivalent impedances cannot represent ones of the original system, which results in errors for traditional model in studying SSR. Based on the error distribution laws, a new method is proposed to establish the SSR model from the real system by enlarging step by step the boundaries of the extracted model. When the subsynchronous modal damping converge between the different scale models, the suitable scale model is obtained. According to the errors distribution law caused by the equivalent impedance at the different nodes in the system, the proposed method can identify the modeling proper boundary. By using the modified IEEE39 Bus system, the errors of the different scale model are assessed, and the proposed modeling method for SSR is validated.关键词
次同步谐振/传统建模方法/阻抗频率特性/新建模方法Key words
subsynchronous resonance/previous modeling method/the frequency dependent characteristics of the equivalent impedances/new modeling method分类
信息技术与安全科学引用本文复制引用
董德勇,陈武晖,张军,谭伦农..实际系统次同步谐振建模方法[J].电网技术,2015,(4):1059-1066,8.基金项目
国家自然科学基金项目(51277089)。Projects Supported by National Natural Science Foundation of China (NSFC)(51277089) （51277089）
