摘要
采用多胞形模型将具不确定性的电力系统运行状态的各种变化描述为以若干个典型运行参数为顶点的凸集,将分散H∞控制器的设计归结为基于同伦参数法的两个线性矩阵不等式的求解问题,从而得到较低阶的分散鲁棒H∞控制器.算法分别用于静止无功补偿器(SVC)的分散附加阻尼控制器和19机IEEE标准测试系统的电力系统稳定器(PSS)的设计.算例结果表明,分散控制器相互协调,不仅显著提升了系统的阻尼比,使其具有良好的抗干扰能力,且对于严重故障后产生的持续振荡具有很好的抑制作用.文中方法与系统模型降阶法相结合,可进一步减轻计算负担,进而适用于实际电力系统的控制器求解.
In order to design a decentralized H∞ controller with robustness and low dimension, the polytopic model is employed to describe the operation states of uncertain power systems as a convex set, in which the vertices are some typical operation parameters, and the homotopy parameter method is adopted to interactively solve two linear matrix inequalities for the purpose of obtaining the solutions to the controller. The proposed approach is then used to design a decentralized additive damping controller in the static var compensator （SVC） and a power system stabilizer （PSS） in an IEEE benchmark system with 19 generators. The test results show that, due to their mutual coordina- tion, the decentralized controller not only greatly improves the damping ratio and anti-interference capability of pow- er systems, but also effectively restrains the continuous oscillations resulting from serious faults. It is also demon- strated that the proposed approach in combination with the model reduction method can further reduce computational burden and is thus suitable for practical power systems.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第2期118-126,共9页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金重点资助项目(50337010)
国家科技攻关计划项目(2006BAA02A17)
关键词
电力系统
不确定性
阻尼控制
多胞形
低阶控制器
分散H∞控制器
power system
uncertainty
damping control
polytope
low-dimension controller
decentralized H∞ controller
作者简介
陈柔伊（1981-），女，博士生，主要从事电力系统运行分析与控制研究，E—mail：fe16@163．com
