%0 Journal Article
%T Design of Robust Controller for LFC of Interconnected Power System Considering Communication Delays
%A T. Jesintha Mary
%A P. Rangarajan
%J Circuits and Systems
%P 794-804
%@ 2153-1293
%D 2016
%I Scientific Research Publishing
%R 10.4236/cs.2016.76068
%X The usage of open communication infrastructure for transmitting
the control signals in the Load Frequency Control (LFC) scheme of power system
introduces time delays. These time delays may degrade the dynamic performance
of the power system. This paper proposes a robust method to design a controller
for multi-area LFC schemes considering communication delays. In existing
literature, the controller values of LFC are designed using time domain
approach which is less accurate than the proposed method. In proposed method, t<span lang=\"EN-US\" style=\"font-family:Verdana, sans-serif;\"><span style=\"font-family:Verdana;\">he</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> controller values are determined b</span><span style=\"font-family:Verdana;\">y moving the</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> rightmost</span><span style=\"font-family:Verdana;\">eigenvalues of</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">the system</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">to the left half plane in a quasi-continuous way for a</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">preset upper bound of time delay. Then the</span><span class=\"apple-converted-space\"><span style=\"font-family:Verdana;\"> robustness of</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span></span><span style=\"font-family:Verdana;\">the</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">proposed</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> controller is
assessed by estimating the maximum</span><span style=\"font-family:Verdana;\">tolerable value of time</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">delay for maintaining system
stability. Simulation studies are carried out for multi-area LFC scheme</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">equipped with</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">the proposed</span><span class=\"apple-converted-space\" style=\"font-family:Verdana;\"> </span><span style=\"font-family:Verdana;\">controller</span><span
%K Continuous Pole Placement Technique
%K Delay Margin
%K Delay-Dependent Stability Analysis
%K Frequency Sweeping Test
%K Load Frequency Control with Time Delays
%K Output Feedback Control
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=66466