Decentralized Coordinated Excitation Control for Large Power System Based on Novel Delay-dependent Non-linear Robust Control Algorithm

作者：Chunxia Dou, Botao Liu · 发表于：Electric Power Components and Systems · 年份：2012 · DOI：10.1080/15325008.2012.675406 · 被引用次数：8 · 研究领域：Power System Optimization and Stability、Power Systems Fault Detection、Smart Grid Security and Resilience

Technological advances of the wide-area measurement system have enabled the use of a combination of measured information from remote locations for stability enhancement of large power systems. However, the time delays introduced by remote transmission in a wide-area measurement system have to be considered. In order to improve the stability of large power systems, this article focuses on a two-level decentralized coordinated excitation control scheme that decentralized a local power system stabilizer for each generator at the first level coordinated by wide-area measurement signals based on a supervisory power system stabilizer at the secondary level. Taking into account the multiple time delays and the non-linearities in system model, a novel delay-dependent non-linear robust control algorithm is proposed to design the decentralized coordinated controller. Finally, the effectiveness of the proposed design scheme is demonstrated through simulation examples.