Applying structured singular values and a new LQR design to decentralized power system load frequency control

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Authors: Yang, T.C., Ding, Z.T. and Yu, H.

Journal: International Journal of Power and Energy Systems

Volume: 21

Issue: 2

Pages: 97-104

ISSN: 1078-3466

This article studies the design of decentralized robust load frequency control for interconnected power systems. It is shown that, subject to a condition based on the structured singular values, each local area load-frequency controller can be designed independently. The robust stability condition for the overall system can be easily stated so as to achieve a sufficient interaction margin introduced in this article, and a sufficient gain and phase margin defined in classical feedback theory during each independent design. Within this general framework, each local area controller design is based on a new linear quadratic regulator design approach.

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