TCSC次同步谐振阻尼控制器设计

输电线路采用串联电容补偿存在引起电力系统次同步谐振的危险,TCSC常用来解决这一问题。基于提升系统电气阻尼的思想,设计了TCSC附加阻尼控制器,该控制器针对分模态控制方法存在的不足进行了改进。基于IEEE SSR第一标准测试模型的分析表明改进后的控制器能将系统在几乎整个次同步频段内的电气阻尼提高为正,从而消除了该频段内的SSR危险。

Design for TCSC Damping Controller of Subsynchronous Resonance Suppression

Subsynchronous resonance(SSR) is a potential danger to power system with series capacitors compensated in transmission lines,so thyristor-controlled series capacitor(TCSC) has always been used to solve the problem.Based on the idea of enhancing system damping,a supplementary subsynchronous damping controller of TCSC is designed,which improves the shortcomings of the sub-modal control method.The simulations carried out on the first benchmark model of the modified IEEE SSR show that the damping controller can increase the electrical damping of almost the whole SSR frequency band to the positive level,that is,the risk of SSR in that frequency band can be mitigated