电力系统保护与控制Issue(23)：55-60,6.
TCSC采样-数据模型在次同步振荡分析中的适用性研究
Suitability study of sampled-data model of TCSC for SSO analysis
摘要
Abstract
Since frequency of the analysis component of Subsynchronous Oscillation (SSO) problem is neither at the power frequency nor within the range of low frequency, Quasi-Steady-State (QSS) model cannot be used to analyze SSO. For the same reason, we also cannot consider the analysis component of SSO as electricity signals at power frequency with low frequency modulation to analyze SSO problem. The dynamic model TCSC must be effective throughout the whole frequency range of SSO. Hence, verification of the suitability of TCSC dynamic model is of great significance. This paper proposes a method to verify the suitability of TCSC dynamic model through comparing damping characteristics throughout the whole frequency range of SSO. On one hand, sample-data model of TCSC is adopted, and small signal analysis method is utilized to establish state space matrices of system. Then a series of matric transformation is applied so as to obtain electrical damping characteristics of system. On the other hand, time simulation model is constructed in PSCAD, where the model of TCSC is precise to the device-level. Then, test signal method is adopted to obtain electrical damping characteristics of system. Finally, electrical damping characteristics obtained by the two methods are compared. The simulation result shows that the sample-data-based model of TCSC is accurate and suitable for the analysis of SSO problem.关键词
次同步振荡/TCSC/动态模型/适用性Key words
SSO/TCSC/dynamic model/suitability分类
信息技术与安全科学引用本文复制引用
向昌明,吴熙,蒋平..TCSC采样-数据模型在次同步振荡分析中的适用性研究[J].电力系统保护与控制,2013,(23):55-60,6.基金项目
“十一五”国家科技支撑计划项目(2008BAA13B07)@@@@This work is supported by Key Project of the National Eleventh-Five Year Research Program of China (No.2008BAA13B07) （2008BAA13B07）
