多机系统中励磁与SVC的协调控制

主要研究基于结构保持模型的多机电力系统的暂态稳定性。将连接与阻尼分配?无源控制方法进行从常微分方程到微分代数方程的拓展,求解一类仿射非线性微分代数系统的调节问题。并用所提方法设计多机系统中的发电机励磁与静止无功补偿器的协调控制器,不再拘泥于单机系统的协调控制研究。该方法充分利用整个系统的物理结构,通过引入电气与机械动态之间的耦合项进行能量整形,加强两者之间的联系,保证闭环系统的渐近稳定性。仿真结果说明了协调控制器在阻尼振荡和增强电压稳定性上的有效性。

Coordinated Control of Excitation and SVC in Multi-Machine Power System

The transient stability of multi-machine power systems based on structure preserving model (SPM) is considered. The interconnection and damping assignment passivity-based control (IDA-PBC) methodology is extended to solve the regulation problem of affine nonlinear differential algebraic system. With the help of interconnection and damping assignment passivity-based control, the nonlinear coordinated control of generator excitation and static var compensator (SVC) in multi-machine systems is investigated. By shaping the total energy function via the introduction of a virtual coupling between the electrical and the mechanical dynamics of the power system, the coordinated generator excitation and SVC controllers are proposed to ensure the asymptotic stability of the closed-loop system. The control law is proved to be effective in damping the oscillations and enhancing the system voltage stability by the results of simulation research.