基于测试信号法的电力系统次同步振荡分析

Subsynchronous Oscillation Analysis of Power System Based on Test Signal Method

介绍了电力系统次同步振荡的基本原理、产生机理及次同步振荡的常用分析方法。利用电力系统电磁暂态仿真软件PSCAD/EMTDC对用于次同步振荡研究的IEEE第一标准模型进行时域仿真,并利用测试信号法计算出了系统的电气阻尼转矩系数,根据该系数可知含有串联补偿电容的电力系统发生了次同步振荡失稳。

Introduction was made to basic principle, generation mechanism of subsynchronous oscillation of power system and commonly used analysis methods. By using power system magnetic transient simulation software PSCAD/EMTDC, time zone simulation was carried out for the first standard model of IEEE used for subsynchronous oscillation study. The test signal method was used to calculate system’s electrical damping torque coefficient. According to the coefficient, it is known that there exists subsynchronous oscillation stability lost in the power system containing series capacitor compensation.