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首页> 外文期刊>Generation, Transmission & Distribution, IET >Non-linear adaptive coordinated controller design for multimachine power systems to improve transient stability
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Non-linear adaptive coordinated controller design for multimachine power systems to improve transient stability

机译：用于多机动力系统的非线性自适应协调控制器设计，以提高瞬态稳定性

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摘要

Based on an adaptive backstepping approach, this study proposes a new coordinated control design where the coordination is done between the excitation controller of synchronous generators and steam-valve controller of turbine-governor systems in a multimachine power system by considering the critical parameters of both systems as unknown. This new coordinated control scheme can ensure the stability of multimachine power systems through the formulation of control Lyapunov functions (CLFs) and derive the adaptation laws to estimate the unknown parameters in the design process to prove the convergence of power systems using CLFs. The performances of the proposed control scheme are evaluated on a two-area four-machine 11-bus power system under different operating conditions such as three-phase short-circuit faults along with changes in loads. Simulation results are then compared with those of a similar controller where there is no coordination between the excitation and steam-valve controllers as well as with a coordinated sliding-mode controller. The results clearly show the effectiveness and superiority of the proposed control scheme.
机译：在自适应反推方法的基础上，本研究提出了一种新的协调控制设计，其中考虑了两个系统的关键参数，在多机电力系统中同步发电机的励磁控制器与汽轮机调节系统的蒸汽阀控制器之间进行协调。作为未知。这种新的协调控制方案可以通过制定控制Lyapunov函数（CLF）来确保多机电力系统的稳定性，并在设计过程中推导自适应律以估计未知参数，以证明使用CLF的电力系统的收敛性。所提出的控制方案的性能是在两区域四机11总线电力系统上，在不同的工作条件下进行评估的，例如三相短路故障以及负载的变化。然后将仿真结果与类似控制器的仿真结果进行比较，在类似控制器中，励磁和蒸汽阀控制器之间没有协调，而协调滑模控制器也没有。结果清楚地表明了所提出的控制方案的有效性和优越性。

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