دانلود رایگان مقاله طرح چند ناحیه ای AGC با الگوریتم رقابت استعماری

Abstract

This paper is focused on optimization based design methodology and application of PID controller in restructured, competitive electricity market environment, for AGC problem. The paper compares two search algorithms for designing of PID controller used for AGC in multiarea power system. The optimal parameters of PID controller have been determined with the use of Imperialist Competitive Algorithm (ICA). A deregulated scenario has been considered to develop the model of the multiarea AGC scheme. This paper presents that the ICA tuned PID (ICA-PID) controller can optimally regulate the generators output and can provide the best dynamic response of frequency and tie-line power on a load perturbation. The performance of proposed controller has been checked on 2-area thermal power system and 3-area thermal-hydro power system with the consideration of generation rate constraint (GRC). The results obtained by ICA-PID controller and genetic algorithm tuned (GA-PID) controller have been compared on the basis of performance parameters (settling time and oscillations). It is seen that ICA-PID controller shows the better performance as compared to GA-PID controller.

5. Conclusion

In this paper, a PID controller is designed and applied to a multiarea power system in restructured environment. 2-area thermal power system and 3-area thermal-hydro power system with GRC have been used to check the performance of the controller. ICA is used to determine the optimal parameters of PID controller. The convergence of the ICA is faster compared to other search algorithm like GA. The PID controller is designed in such a way that it minimizes the ACE. Different market transactions and load change scenarios have been considered to show the effectiveness of the controller. Results show that the frequency error got eliminated in steady state and Gencos shared the load demand according to market transactions. ICA-PID controller has also been compared with GA-PID controller. The comparative results show that ICA-PID controller has better performance and improves system responses more effectively compared to GA-PID controller in terms of settling time and oscillations.