基于有功负荷ON-OFF调制的电力系统稳定控制

Power System Stability Control Based On On-off Control of Active Loads

有功负荷的ON -OFF调制有助于阻尼机电振荡 ,提高电力系统稳定性。这篇论文论述了应用滑模变结构控制理论设计一个ON -OFF控制器。该控制器利用发电机的转速作为输入来进行判断 ,通过断路器来控制有功负荷。其仿真试验是利用MATLAB中建立的单机无穷大系统模型完成的。试验结果表明 ,基于有功负荷ON -OFF调制的稳定控制在振荡过程中是有效的 。

Controlled active load can contribute to damping of electro-mechanical oscillations and improving power system stability. This paper presents an on-off controller, which is based on variable-structure control system with sliding mode. The controller used estimated rotor speed of machine as input and controlled an active load via breaker. The time simulations were done with a single machine infinite system model, which was build by MATLAB. The results indicate that on-off control of active loads is effective in terms of oscillations and that it is simple to tune and implement.