Modelling and Simulation: A Comparison of LQR Control and Unified Power Flow Controller for Dynamic Stability Improvement
| Main Author: | Junaidi, Agus |
|---|---|
| Format: | Article PeerReviewed Book |
| Bahasa: | ind |
| Terbitan: |
International Research Publication House
, 2017
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| Subjects: | |
| Online Access: |
http://digilib.unimed.ac.id/41367/1/PEER%20REVIEWER.pdf http://digilib.unimed.ac.id/41367/2/TURNITIN.pdf http://digilib.unimed.ac.id/41367/ https://www.ripublication.com/irph/ijert19/ijertv12n7_13.pdf |
Daftar Isi:
- Improved dynamic stability of the Single Machine Infinite Bus (SMIB) system can be done with UPFC control and LQR Control. This study examines the use of optimal control and Unified Power Flow Controller (UPFC) devices to improve the stability of the SMIB system. The SMIB system is a single generator connected to an infinite-bus. The SMIB system model is made in the form of a state-space variable equation, then compiles the Riccati matrix equation to determine the gain optimal in the Linear Quadratic Regulator (LQR) control system. The input of the optimal gain amplifier is obtained from the angle of swing (Δδ) and the rotor speed (Δω), as well as the internal voltage (Vt) and the voltage change at the anchor. The output of the LQR control is injected on the excitation system of the SMIB model. The LQR control system is compared to the UPFC control system. The UPFC device is installed on the transmission line. UPFC was formed in a new mathematical equation model of injection. The UPFC injection model controls the Pi and Pj power parameters (Power injected on bus-i and bus-j). Installation of the UPFC device is used to test the repair of oscillation of the electric power system. Comparison between systems in an open loop and closed loop state (using LQR and UPFC controls) is made using Simulink. The performance of the open-loop and closed loop systems, namely the observation of oscillation changes in the rotor angle is used in determining the level of repair of system oscillation attenuation. From the tests conducted, it can be seen that the use of UPFC is better than the LQR control in reducing overshoot and reducing oscillation changes in the rotor angle to reach the steady state.