电网技术2012，Vol.36Issue(3)：223-227,5.
高压直流输电与发电机励磁的综合变结构控制
A Comprehensive Variable Structure Control for HVDC Power Transmission and Generator Excitation
摘要
Abstract
To improve transient stability of AC-DC interconnected power system by variable structure control strategy, taking signle machine infinite bus system as research object and based on dynamical equation of AC-DC interconnected power system, electomagnetic power equation of generator and the equation for power modulation of HVDC transmission system, a nonliear mathematical model for comprehensive control for HVDC power transmission and generator excitation is built. A comprehensive controller for HVDC power transmission and generator excitation is designed by sliding mode variable structure control strategy. The control law for the designed controller is achieved by following procedures： firstly a slide mode motion equation for the control system is set; then an equivalent system is attained; finally the control law is obtained by solving the switching surface equation. The proposed control system is simulated by conventional control strategy and the proposed control strategy respectively, and simulation results show that both transient stability limit and transient stability of AC-DC interconnected power system can be evidently improved by use of the proposed control strategy while fault occurs in AC power transmission line.关键词
高压直流输电/综合控制/变结构控制/切换面/暂态稳定性Key words
HVDC power transmission/comprehensivecontrol/variable structure/switching surface/transient stability分类
信息技术与安全科学引用本文复制引用
朱红萍,罗隆福..高压直流输电与发电机励磁的综合变结构控制[J].电网技术,2012,36(3):223-227,5.基金项目
国家自然科学基金资助项目（60974048）：湖南省自然科学基金资助项目（11JJ9013）. （）
