Abstract
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.
Original language | English |
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Pages (from-to) | 995-1018 |
Number of pages | 24 |
Journal | Electric Power Components and Systems |
Volume | 40 |
Issue number | 9 |
DOIs | |
Publication status | Published - 4 Jun 2012 |