Abstract
This paper presents the application of Unified Power Flow Controller (UPFC) to enhance damping of Low Frequency Oscillations (LFO) at a Single-Machine Infinite-Bus (SMIB) power system installed with UPFC. Since UPFC is considered to mitigate LFO, a supplementary UPFC like power system stabilizer is designed to reach the defined purpose. Simulated Annealing (SA) is used to tune UPFC supplementary stabilizer. To show effectiveness, the proposed method is compared with another optimization method named Genetic Algorithms (GA). Several linear timedomain simulation tests visibly show the validity of proposed method in damping of power system oscillations. Also simulation results emphasis on the better performance of SA in comparison with GA.
Highlights
This paper presents the application of Unified Power Flow Controller (UPFC) to enhance damping of Low Frequency Oscillations (LFO) at a Single-Machine Infinite-Bus (SMIB) power system installed with UPFC
The objective of this paper is to investigate the ability effective in controlling power flow and damping power of optimization methods such as Simulated Annealing system oscillations
A Sigel increase power system operation flexibility and Machine Infinite Bus (SMIB) power system installed with controllability, to enhance system stability and to achieve a UPFC is considered as case study and a UPFC based better utilization of existing power systems (Hingorani et stabilizer controller whose parameters are tuned using al., 2010)
Summary
K cδbΔδB nonlinear dynamic model around nominal operating condition. The linear model of the system is given as (3). Where converter must be equal to the input real power of the series converter or vice versa. In order to maintain the power balance between the two converters, a DC-voltage regulator is incorporated. DC-voltage is regulated by modulating the phase angle of the shunt converter voltage. In this paper a PI type controller is considered to control of DC voltage. The parameters of this PI type DCvoltage regulator are considered as KI=39.5 and KP=6.54. Power system stabilizer A stabilizer controller is provided to improve
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