Decentralized stability-enhancing control of synchronous generator

Jan Machowski , Sylwester Robak , J.W. Bialek , J.R. Bumby , N. Abi-Samra


This paper describes new structures for stability-enhancing excitation controllers designed using a nonlinear multi-machine system model and Lyapunov's direct method. Two control structures are presented: a hierarchical structure In which the AVR is the master controller and the PSS the slave controller and a traditional structure in which the PSS constitutes a supplementary loop to the main AVR. Both controllers are shown to be robust, as the damping they introduce into the system is insensitive to changes in both the system topology/parameters and the pattern of network flows. Each individual controller contributes positively to the overall system damping with no undesirable interaction between controllers. These features should allow a decentralized approach to the design of the AVR+PSS. Such a design approach is compatible with the new competitive market structures and should result in savings on commissioning costs. Simulation results for a multi-machine power system are presented that confirm the above and show that the two control structures are very effective in damping both local and inter-area power swings
Author Jan Machowski (FoEE / IEPE)
Jan Machowski,,
- The Institute of Electrical Power Engineering
, Sylwester Robak (FoEE / IEPE)
Sylwester Robak,,
- The Institute of Electrical Power Engineering
, J.W. Bialek
J.W. Bialek,,
, J.R. Bumby
J.R. Bumby,,
, N. Abi-Samra
N. Abi-Samra,,
Journal seriesIEEE Transactions on Power Systems, ISSN 0885-8950
Issue year2000
Keywords in EnglishAVR, competitive market, control design, control simulation, control system analysis, Control systems, control system synthesis, Costs, damping, decentralised control, decentralized stability-enhancing control, inter-area power swings, local power swings, Lyapunov methods, Lyapunov's direct method, machine control, machine theory, master controller, Master-slave, multi-machine power system, network topology, nonlinear control systems, nonlinear multi-machine system model, power system control, power system simulation, power system stability, PSS, robust control, robustness, slave controller, stability, stability-enhancing excitation controllers, synchronous generator, synchronous generators, voltage control
ASJC Classification2208 Electrical and Electronic Engineering; 2102 Energy Engineering and Power Technology
Score (nominal)45
Score sourcejournalList
Publication indicators Scopus Citations = 55; WoS Citations = 37; GS Citations = 53.0; Scopus SNIP (Source Normalised Impact per Paper): 2000 = 2.038; WoS Impact Factor: 2006 = 0.922 (2) - 2007=1.698 (5)
Citation count*53 (2016-09-15)
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