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Issue No:8 Vol.4 |
june -2011 |
ISSN: 0974-5645 |
| RESEARCH ARTICLES |
Viewers & PDF |
| 16. Comparison of robust control methods performance in the UPFC controllers design. Mehdi Nikzad, Shoorangiz Shams Shamsabad Farahani, Mehdi Ghasemi Naraghi, Mohammad Bigdeli Tabar and Ali Javadian. Indian J.Sci.Technol. Vol.4, Issue 6, pp: 670-676. |
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- Abstract
The Unified Power Flow Controller (UPFC) integrates properties of shunt and series compensations and can effectively
alters power system parameters in a way that increases power transfer capability and stabilizes system. Simple
Proportional-Integral (PI) controllers are applied to UPFC as usual controllers, but parameters of PI controllers are
usually tuned based on the trial-and-error approaches and they are incapable to obtain a good dynamic performance
under a wide range of operating conditions. To solve this problem, robust control methods are proposed to design
UPFC controllers. Also a supplementary damping controller to increase damping of power system oscillations is
developed. A Single-Machine Infinite Bus (SMIB) power system installed with a UPFC with system parametric
uncertainties is considered as case study. The system parametric uncertainties are obtained by 40% changing
parameters from their typical values. Proposed methods are compared with each other to show their effectiveness and
robustness. The objectives are to study and comparison robust control methods performance for UPFC control
problem.
- Keywords: Flexible AC Transmission Systems, Unified Power Flow Controller, μ-synthesis, H∞ loop-shaping
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