可控串补（TCSC）控制方法的研究

【作者】 杨超；

【导师】 张俊芳；

【作者基本信息】 南京理工大学 ， 电力系统及其自动化， 2005， 硕士

【摘要】 论文在总结了当前可控串联补偿(TCSC)稳定控制策略与阻抗控制研究现状的基础上,对TCSC阻尼系统振荡的原理进行了分析,提出了相应的控制方法,设计了TCSC的非线性最优稳定控制器和阻抗控制器。主要内容如下: 1) 在研究模糊控制以及PID控制基本理论的基础上,设计了TCSC的模糊自适应整定PID阻抗控制器,通过计算TCSC当前容抗的误差和误差变化率,利用模糊推理系统动态调节PID参数,从而克服了传统PID控制的不足,具有较强的鲁棒性,使控制质量提高。研究了基于模糊PID控制与bang-bang控制相结合的TCSC阻抗控制方法,可解决控制过程中快速性与稳定性之间的矛盾。 2) 结合逆系统方法和二次型最优控制理论,建立单机无穷大系统和双机系统模型,设计了TCSC非线性最优稳定控制器。 3) 根据TCSC非线性最优控制器在线计算的容抗值作为命令容抗,通过模糊PID控制器使TCSC实现该命令容抗。分别对单机无穷大系统和双机系统进行仿真,结果表明论文所设计的控制器有效地阻尼系统振荡,提高了系统的静态稳定与暂态稳定性。更多还原

【Abstract】 On the base of summarizing rensent methods of the thyristor-controlled series compensation (TCSC) stability controls and impedance controls, this dissertation analyses the theory of damping the power oscillation using TCSC, and proposes the corresponding control strategies. Designing of nonlinear controller and impedance controller has been developed.The main contents and results in this dissertation are as follows:1. Presenting the self-adaptive fuzzy PID control method for TCSC impedance control base on the research of theory of fuzzy control and PID control. This method avoids the shortcomings of the conventional PID controllers by the fuzzy adjustment of PID parameters in a dynamic process. It has good robustness and can make control quality improved. This dissertation proposes a advantaged method of TCSC impedance controller which combines the bang-bang control and fuzzy-PID. This controller can settle the contradiction between the celerity and stability in the control process on the whole.2. On the base of research of Inverse system method and linear optimal control theory and the found of the modles of unit-maximum power system and double-generator system, this dissertation designs the TCSC nonlinear controller.3. This dissertation uses the fuzzy-PID controller to carry out the order impedance which was calculated by the TCSC nonlinear controller and damp the power oscillation ultimately. Digital simulation research based on unit-maximum power system and double-generator system indicated that these controllers designed in this paper have good performance in transient stability control of these systems.更多还原