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TCSC低频振荡阻尼控制研究

Damping Control with TCSC Against Low Frequency Oscillation

【作者】 张凯莉

【导师】 谭文;

【作者基本信息】 华北电力大学(北京) , 控制理论与控制工程, 2008, 硕士

【摘要】 可控串补(TCSC)由于其简单的结构、低廉的造价及其阻尼系统振荡、优化系统潮流分布、提高输电线路输送能力、改善系统稳定性的卓越性能,已经赢得广泛的重视。TCSC对各种工况和场景的适应性,是其能否在实际电力系统中得到有效应用的关键,而控制器成为设计TCSC装置的关键。本文在分析TCSC结构的基础上,讨论了TCSC暂态稳定控制策略与阻抗控制方法的原理,并通过建立含TCSC多机系统的线性化数学模型,设计了TCSC线性阻尼控制器以及TCSC自适应模糊阻尼控制器。利用MATLAB搭建的包含TCSC的典型多机及单机无穷大系统模型进行仿真,结果证明所设计的TCSC阻尼控制能有效阻尼低频振荡并具有较好的鲁棒性。

【Abstract】 TCSC, simple in structure and low in cost, has received much attention due to its outstanding performances in damping the power system low-frequency oscillations, optimizing the flow distribution, and improving transmission lines capacity and system stability. The adaptability of TCSC to various work conditions is a key issue in applying TCSC in the practical electric power system, and the controller design is very important for TCSC.This thesis analyzes the structure of TCSC, and discusses the principles of TCSC damping control. Then TCSC damping controllers are designed for multi-machine systems and an adaptive fuzzy damping controller is designed for a SGIB (Single Generator Infinite Bus). Simulation models of multi-machine systems and SGIB system with TCSC are built with MATLAB. Simulation results show that the proposed TCSC damping controllers have good performances and are quite robust.

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