应用飞轮储能系统阻尼电力系统低频振荡

Damping of Power System Low-frequency Oscillations with FESS

飞轮储能系统(FESS)具有独立的有功和无功功率调节能力,通过适当的控制策略补偿系统振荡功率,能快速平息振荡,达到抑制低频振荡的目的。文中应用阻尼转矩法从理论上分析了FESS阻尼系统低频振荡的机理,并在此基础上提出FESS最佳安装地点、阻尼控制器回路、反馈信号的选择及附加阻尼控制参数整定的解决方法。以4机系统为例,特征值计算和时域仿真都表明了分析结果的正确性。

Flywheel energy storage system （FESS） can be used for damping power system low-frequency oscillations by compensating for the imbalance power with appropriate control strategy,which has an independent active and reactive power control capability. The principle of damping power system low-frequency oscillations with FESS is theoretically investigated by damping torque analysis （DTA） method. A method is also proposed to select the best installing location,damping control loop,feedback signal based on DTA and to design FESS-based stabilizer by the phase compensation method. All of the analytical conclusions have been confirmed by the results of eigenvalue calculation and non-linear simulation by a four-machine power system example.