电力系统及其自动化学报2017，Vol.29Issue(10)：106-112,7.DOI:10.3969/j.issn.1003-8930.2017.10.018
基于广域测量信号和射影控制的多通道PSS设计
Design of Multi-channel PSS Based on Wide-area Measurement Signals and Projective Control
张春秋 1杨洪耕 1魏亮2
作者信息
- 1. 四川大学电气信息学院,成都 610065
- 2. 秦皇岛市供电公司,秦皇岛 066000
- 折叠
摘要
Abstract
The degrees of freedom and robustness and the conventional power system stabilizer(PSS)are usually con?strained due to its feedback input of local signals and multi-module cascaded structure. To improve its ability to sup?press the low-frequency oscillation,a multi-channel PSS based on wide-area measurement signals and projective theo?rem is designed. The system model is identified by the high-accuracy TLS-ESPRIT algorithm. Based on the identifica?tion result,the wide area measurement signals with both higher observability and controllability are selected as the feed?back input of controllers in different oscillation modes. Then,band-pass filters are adopted to separate the oscillation modes,and controllers are designed for each mode based on projective theorem,thus realizing an hierarchical control for each mode. Moreover,compensation is designed to eliminate the influence of time delays in wide-area signals on the control effect. At last,a conventional PSS is designed and compared with the designed controller. Simulation tests indi?cate that compared with the conventional PSS,the designed controller has better control effect,lower order of the con?troller and stronger robustness,which is suitable for engineering practices.关键词
低频振荡/电力系统稳定器/广域测量信号/射影控制/多通道/时滞Key words
low-frequency oscillation/power system stabilizer(PSS)/wide-area measurement signal/projective con⁃trol/multi-channel/time delay分类
信息技术与安全科学引用本文复制引用
张春秋,杨洪耕,魏亮..基于广域测量信号和射影控制的多通道PSS设计[J].电力系统及其自动化学报,2017,29(10):106-112,7.
