静止无功补偿器与发电机励磁协调自适应控制

采用直接反馈线性化、非线性控制和参数自适应控制方法,设计了电力系统中静止无功补偿器(SVC)与发电机励磁协调自适应控制器.该控制方法可以同时满足发电机功角稳定和SVC节点处电压稳定控制.对于电力系统中存在系统参数的不确定性问题,由于系统参数往往和系统实际运行状态相关,这使电力系统的稳定性降低,也增大了系统稳定控制的难度.考虑了系统参数的具体特点,实现了系统参数与状态的解耦,利用参数自适应控制方法,获得系统目标跟踪及稳定控制.仿真结果表明,该方法具有较好的实用效果和优越性.

The Adaptive Control of SVC Coordinated with an Excitation System of Generator

The parametric adaptive control methods based on the feedback linearizd technique and control method of nonlinear systems were adopted. The coordinated and adaptive control design is oabtained for SVC(static var compensator) and generator exciation in power systems. The stabilities of power angle of generator and voltage of SVC nodes can be satisfied simultaneously by this control method. For the uncertainty of system parameters in power systems, the parameters are always related to the real working condition, which, as a result, decreases the stability of power systems and increases the difficulty in the system stability control. The characteristic of the system parameters are also taken into account, which helps to realize the decoupling of the system parameters and states, and the goal tracking and stability control of systems are achieved through the parametric adaptive control method. The simulation results indicate that this control method has good practical effect and superiority.