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

摘要

The design of decentralized robust load frequency control forinterconnected power systems is studied in this paper. It is shown that,subject to a condition based on structured singular values (SSVs), eachlocal area load-frequency controller can be designed independently. Therobust stability condition for the overall system can be easily statedto achieve a sufficient interaction margin (introduced in this paper),and a sufficient gain and phase margin defined in classical feedbacktheory during each independent design. Within this general framework,each local area controller design is based on a new linear quadraticregulator design approach