串补电路中次同步谐振检测和抑制的研究

针对晶闸管控制的串联补偿电路(TCSC)的次同步谐振(SSR)问题,提出了一种可实时检测次同步谐振,并对其加以抑制的方法。文中不仅介绍了串补系统的投入和晶闸管开关技术,还对此方法作了详细的理论分析和大量的仿真研究,设置两个门槛值。用Labwindows/CVI进行仿真分析说明,该方法对检测和抑制次同步谐振可行、有效。设置门槛值后,可以防止外界干扰引起误动作,减少晶闸管的动作次数,延长元器件的寿命。

The research on detecting and suppressing SSR in SC circuit

As to the problem of sub synchronous resonance(SSR)in thyristor controlled series compensation (TCSC) circuit, a method to real time detect and suppress sub harmonic has been put forward. In this paper, the plunge of capacitor and thyristor switch technology have been introduced, what's more, a detail introduction of the basic principle and mass artificial analysis have been done, furthermore, two thresh hold values have been set to prevent error action for exoteric disturbance and reduce the thyristor's number of action to prolong its life circle. In addition, mass artificial analysis by means of Labwindows/CVI has been done to show that this method is valid and practicable .