Outline
- Abstract
- Keywords
- Nomenclature
- Introduction
- Two Area Power System
- Optimization Techniques
- Overview of Bat Search Algorithm
- Overview of Simulated Annealing (sa) Algorithm
- Objective Function
- Results and Simulations
- Step Increase in Demand of the Second Area ()
- Step Increase in Demand of Both Area Simultaneously
- Parameter Variation
- Performance Indices and Robustness
- Conclusions
- Appendix
- References
رئوس مطالب
- چکیده
- کلید واژه ها
- مقدمه
- سیستم قدرت دو ناحیه ای
- روش های بهینه سازی
- تابع هدف
- نتایج و شبیهسازی ها
- مرحله افزایش تقاضا در حوزه دوم
- مرحله افزایش تقاضا در هر دو حوزه به صورت همزمان
- تنوع پارامتر
- استحکام و شاخص های عملکردی
- نتیجه گیری
Abstract
BAT algorithm is proposed in this paper for optimal tuning of PI controllers for load frequency controller (LFC) design. The problem of robustly tuning of PI based LFC design is formulated as an optimization problem according to time domain objective function that is solved by BAT algorithm to find the most optimistic results. To demonstrate the effectiveness of the proposed method, a two-area interconnected power system is considered as a tested system. To ensure robustness of the proposed control strategy to stabilize frequency oscillations, the design process takes a wide range of operating conditions and system nonlinearities into account. The simulation results are given to detect the superiority of BAT algorithm over Simulated Annealing (SA) in tuning PI controller parameters through different indices. Results evaluation show that the proposed algorithm achieves good robust performance for wide range of system parameters and load changes compared with SA.
Conclusions
BAT algorithm is proposed in this paper to tune the parameters of PI controllers for LFC problem. A two nonlinear area power system is considered to demonstrate the proposed method. The integral of sum square error of the frequency of both areas and tie line power are taken as the objective function to improve the system response in terms of the settling time and overshoots. Simulation results confirm that BAT based PI is capable to guarantee robust stability and robust performance under various loading conditions and system parameters changes compared with SA based PI controller. Moreover, different performance indices and settling time are obtained to verify the effectiveness of the proposed controller. Besides its simple architecture, it has the potentiality of implementation in real time environment.