文档介绍：
Adaptive Supervisory Robust Control of Wide-Area Power
System with Time-Varying Delay#
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HU Zhijian, ZHANG Ziyong**
(Electrical School,Wuhan University,430072)
Abstract: The paper uses an LMI-based iterative nonlinear optimization algorithm to establish a
method of designing state-feedback controllers for power systems with a time-varying delay. This
method is based on the delay-dependent stabilization conditions obtained by free weighting matrix
approach. In the stabilization conditions, the upper bound of wide-area signal’s transmission delays is
taken into consideration. Combining theories of state observer, the adeptive supervisory controller
(ASC) is designed and time-delay output feedback robust controller is realized for power system. The
ASC uses the input information from wide-area measurement systems (WAMS) and dispatches
supplementary control signals to the available local controllers. Simulation study in the New England
test power system confirm that the proposed ASCs can dampen power oscillation effectively and is
robust to time-varying delay condition.
Key words: adaptive supervisory controller (ASC), delay-dependent damping control, power
oscillation, free weighting matrix approach, time-varying delay, WAMS
0 Introduction
WITH the deregulation of power systems, many tie lines between control areas are driven to
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