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Boroujeni, Hasan Fayazi
- Robust PID Power System Stabilizer Design Based on Pole Placement and Nonlinear Programming Methods
Abstract Views :525 |
PDF Views:161
Authors
Affiliations
1 Department of Electrical Engineering, Islamic Azad University, Boroujen Branch, Boroujen, IR
1 Department of Electrical Engineering, Islamic Azad University, Boroujen Branch, Boroujen, IR
Source
Indian Journal of Science and Technology, Vol 4, No 4 (2011), Pagination: 456-461Abstract
Power system stabilizers (PSS) are used to generate supplementary damping control signals for the excitation system in order to damp the low frequency oscillations (LFO) of the electric power system. The PSS is usually designed based on classical control approaches but this conventional PSS (CPSS) has some problems. To overcome the drawbacks of CPSS, numerous techniques have been proposed in literatures. In this paper a new robust hybrid method based on the combination of pole placement and nonlinear programming methods is proposed in order to design a robust power system stabilizer. The classical robust methods usually lead to a high order controller which is expensive, difficult to implement and somehow impossible. As a solution, in this paper a PID type PSS is considered for damping electric power system oscillations. The parameters of this PID type PSS (PID-PSS) are tuned based on pole placement and nonlinear programming methods. Therefore, not only the obtained PID-PSS is low order and easy to implement but also it has robust characteristics like robust controllers. The proposed PID-PSS is evaluated against the conventional and robust power system stabilizers in a single machine infinite bus power system considering system parametric uncertainties. The simulation results clearly indicate the effectiveness and validity of the proposed method.Keywords
Electric Power System Stabilizer, Pole Placement, Nonlinear Programming, Robust Control, PID ControllerFull Text
References
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- Low Frequency Oscillation at a Multi Machine Environment by Using UPFC Tuned Based on Simulated Annealing
Abstract Views :475 |
PDF Views:111
Authors
Affiliations
1 Department of Electrical Engineering, Boroujen Branch, Islamic Azad University, Boroujen, Iran
1 Department of Electrical Engineering, Boroujen Branch, Islamic Azad University, Boroujen, Iran
Source
Indian Journal of Science and Technology, Vol 4, No 12 (2011), Pagination: 1630-1634Abstract
Unified Power Flow Controller (UPFC) is one of the most viable and important Flexible AC Transmission Systems (FACTS) devises. Application of UPFC in single machine and multi machine electric power systems has been investigated with different purposes such as power transfer capability, damping of Low Frequency Oscillations (LFO), voltage support and so forth. But, an important issue in UPFC applications is to find optimal parameters of UPFC controllers. This paper presents the application of Unified Power Flow Controller (UPFC) to enhance dynamic stability of a multi-machine electric power system. A supplementary stabilizer based on UPFC (like power system stabilizer) is designed to reach the defined purpose. An intelligence optimization method based on Simulated Annealing (SA) is considered for tuning the parameters of UPFC supplementary stabilizer. Several nonlinear time-domain simulation tests visibly show the ability of UPFC in damping of power system oscillations and consequently stability enhancementKeywords
Unified Power Flow Controller, Low Frequency Oscillations, Multi Machine Electric Power System, Simulated AnnealingFull Text
References
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- Reza Hemmati, Sayed Mojtaba Shirvani Boroujeni, Hamideh Delafkar and Amin Safarnezhad Boroujeni (2011) Stabilizer design based on UPFC using simulated annealing. Indian J.Sci.Technol. 4 (7), 815-819. Domain site: http://www.indjst.org.
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- Controller Parameters Design of Doubly Feed Induction Generator Using Particle Swarm Optimization
Abstract Views :369 |
PDF Views:111
Authors
Affiliations
1 Department of Electrical Engineering, Boroujen Branch, Islamic Azad University, Boroujen, Iran
1 Department of Electrical Engineering, Boroujen Branch, Islamic Azad University, Boroujen, Iran
Source
Indian Journal of Science and Technology, Vol 4, No 12 (2011), Pagination: 1635-1638Abstract
The integration of wind farms into the electricity grid has become an important challenge for the utilization and control of electric power systems, because of the fluctuating and intermittent behavior of wind power generation. Doubly fed induction generators (DFIG) are commonly used wind turbine generators (WTG) in electricity networks. In DFIG there are three control loops which should be implemented in order to appropriate performance of WTG. These control loops are pitch angle control, rotor speed control and voltage control. In this paper a unified scheme is used to adjust these controllers in the same time. Particle Swarm Optimization (PSO) is used to adjustment the proposed controllers. The results of wind power on the system performance are compared with a conventional thermal power plant.Keywords
Wind Turbine Generators, Doubly Fed Induction Generators, Pitch Angle Control, Multi Machine Electric Power System, Particle Swarm OptimizationFull Text
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- Sayed Mojtaba Shirvani Boroujeni, Reza Hemmati, Hamideh Delafkar and Amin Safarnezhad Boroujeni (2011) Optimal PID power system stabilizer tuning based on particle swarm optimization. Indian J.Sci.Technol. 4 (4), 379-383. Domain site: http://www.indjst.org.
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