Discrete Open Loop Control for Power Oscillation Damping Utilizing Variable Series Reactance Facts Devices
Discrete Open Loop Control for Power Oscillation Damping Utilizing Variable Series Reactance Facts Devices
复制标题
利用可变串联电抗事实器件进行功率振荡阻尼的离散开环控制
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
L. Angquist
中科院分区：
文献类型：
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作者：
N. Johansson;H. Nee;L. Angquist
本文介绍了一种用于抑制电力振荡的FACTS装置的开环控制方法。该方法是基于逐步串联电抗调制。该方法的原理是通过切换与一条传输线串联的电抗，从而改变参与振荡的区域之间的总电抗，来稳定以一种主要振荡模式为特征的电力系统中的振荡。为了在振荡期间稳定系统，改变区域之间的静止电压角度差，以在区域的集总电机表示的速度为标称的点处与当前角度一致。这是振荡峰值时的情况。为了确定电抗阶跃所需的大小，使用电力系统的简化模型。使用电抗控制线路上的有功功率的本地测量值来连续地更新模型参数。提出了几种不同步长的阻尼方法，并通过电力系统模型的数字仿真进行了验证
This paper describes an open loop method of controlling FACTS devices for power oscillation damping. The method is based on step-wise series reactance modulation. The principle of the method is to stabilize an oscillation in a power system which is characterized by one major mode of oscillation by switching a reactance in series with one transmission line, thereby changing the total reactance between the areas participating in the oscillation. In order to stabilize the system during an oscillation, the stationary voltage angle difference between the areas is changed to coincide with the present angle at a point where the speed of the lumped machine representations of the areas is nominal. This is the case at the peaks of the oscillation. To determine the required size of the reactance step, a reduced model of the power system is used. The model parameters are continuously updated using local measurements of the active power on the reactance controlled line. Several approaches for damping with different numbers of steps are presented and verified using digital simulations of power system models