机构地区: 华南理工大学电力学院
出 处: 《中国电机工程学报》 2005年第5期28-32,共5页
摘 要: 该文引入动态相量法建立可控串补 TCSC 的系统化的大信号模型,TCSC 的动态相量模型是以时变傅里叶级数中的主导项为状态变量建立的状态空间模型,可以考虑晶闸管开关的非线性动态和谐波特性。通过对时域模型和不同精细程度的动态相量模型的仿真,揭示了 TCSC 在容性工作区时电容电压的谐波分量主要是三次谐波和五次谐波的特征,同时表明考虑开关的动态特性、根据需要的精度建立的动态相量模型适于电力系统的快速动态分析和与频谱相关的机理研究。 This paper introduces the dynamic phasor approach to develop systemic and large-signal models for a Thyristor-Controlled Series Capacitor (TCSC). The TCSC dynamic phasor models are state-space models and can consider the nonlinear dynamic and harmonic characteristics in which the state variables are the dominant time-varying Fourier coefficients. The simulation results of detailed time-domain model and dynamic phasor models demonstrate that the TCSC mostly generates third and fifth harmonics in capacitive region, and present that the dynamic phasor models achieve a very good accuracy compared with detailed time-domain model. The proposed method is well suited for faster dynamic simulation and harmonic analysis.