基于暂态能量的乓-乓控制的串补电容最优投退时刻的研究

Study of the Optimal Switching Time of Pang-Pang Controlled Series Capacitor Based on Transient Energy

输电线路上的串补电容不但可以提高线路的输送容量，而且对于系统在故障后的振荡也有很好的阻尼作用。研究表明，对于乓-乓控制的串补电容，它的投退时刻对于其阻尼振荡的效果有很大的影响。本文将电力系统中的暂态能量函数的应用范围作了推广，给出了一种利用系统暂态能量来计算乓-乓控制的串补电容最优投退时刻的方法。此方法计算简单，控制规律易于实现。对于实际系统的仿真结果表明了本方法的有效性。

Controllable series capacitors have been utilized to damp swings resulted from lage transientdisturbances in power systems. Many studies show that the switching time of the pang - pang controlled seriescapacitors has distinct influence on its effectiveness. The application scope of the transient energy of powersystem has been extended and a simple method for calculating the optimal switching time of pang - pangcontrolled series capacitor was proposed. Simulation results show the effectiveness of the method.