摘要
电力系统中的随机振荡会极大地破坏互联电网的安全性。本文在分析互联电力系统动力学特性的基础上,提出一种改进的滑模控制方法,对系统进行随机振荡抑制,使系统快速平滑地到达控制目标。同时,针对互联电力系统中不确定参量设计识别率,对不确定参量进行有效识别。改进的滑模控制方法不仅可以使系统有较快的收敛速度,而且对抖振现象也有很好的抑制作用,具有很强的鲁棒性。
Random oscillation in power system will greatly damage the security of interconnected power grid. Based on the analysis of the dynamic characteristics of interconnected power systems, an improved sliding mode control method is proposed to suppress the random oscillation of the system, so that the system can reach the control target quickly and smoothly. At the same time, the identification law is designed for the uncertain parameters in the interconnected power system to effectively identify the uncertain parameters. The improved sliding mode control method can not only make the system have a faster convergence speed, but also has a good suppression effect on chattering phenomenon, and has strong robustness.
作者
赵丽娜
李慧秀
ZHAO Li-na;LI Hui-xiu(School of Electrical Engineering,Dalian University of Science and Technology,Dalian 116052 China)
出处
《自动化技术与应用》
2022年第9期5-7,39,共4页
Techniques of Automation and Applications
基金
国家自然科学基金(61074029)。
关键词
滑模控制
参量识别
互联电力系统
Sliding mode control
parameter identification
interconnected power system
