Design robust controller for automatic generation control in restructured power system by imperialist competitive algorithm

Nowadays, automatic generation control (AGC) is a very impressive problem in restructured power system operation for providing electric power with high quality and reliability. In this paper, the three-area multi-units system has been selected for AGC in a restructured power system. Federal energy regulatory commission supports an open market system for price-based operation. The theory of DISCO participation matrix is used to simulate the bilateral contracts in the three-area multi-units systems. In a restructured system because of open market system the power flow between areas is varying continuously however the system must be able to maintain stability in all conditions. In this paper, two cases for design robust controller have been considered. A new method using the imperialist competitive algorithm for designing this controller has been used. Finally, the obtained results are compared with other methods.