Affiliations: [a] Department of Electrical and Electronics Engineering, Mahendra Institute of Engineering and Technology, Namakkal, TN, India | [b] Department of Electrical and Electronics Engineering, Hindusthan College of Engineering and Technology, Coimbatore, TN, India | [c] Department of Information Technology, Techno India College of Technology, Kolkata, India | [d] Faculty of Engineering at Shoubra, Benha University, Benha, Egypt | [e] Faculty of Engineering, Aurel Vlaicu University of Arad, Arad, Romania
Correspondence:
[*]
Corresponding author: K. Jagatheesan, Department of Electrical and Electronics Engineering, Mahendra Institute of Engineering and Technology, Namakkal, TN, India. E-mail:jaga.ksr@gmail.com
Abstract: Automated industries require high quality of power supply for
better performance. Therefore, power generating units play crucial role. In
this work, multi-area power system incorporates six area thermal power
systems with different steam configuration is investigated with Automatic
Generation Control (AGC). The investigated system included non-reheat
thermal power system in area 1 and 2, while area 3 and 4 are single reheat
thermal power system and area 5 and 6 are double reheat thermal power
system. All areas are interconnected through tie-line. A
Proportional-Integral-Derivative (PID) controller is proposed as a secondary
controller to provide the necessary control signal during sudden load
demand. To achieve optimal PID controller performance, the controller gain
values are optimized by considering nature inspired meta-heuristic
algorithm, namely the Ant Colony Optimization (ACO) technique using
different objective functions. Time domain specification analysis is
considered to evaluate the performance of investigated power system, where
the power system is designed and modeled under Matlab/Simulink environment.
Finally, simulation results established that Integra Time Absolute Error
(ITAE) objective function based PID controller provided superior performance
compared to other objective function based PID controller.
Keywords: Automatic generation control, multi-area power systems, objective function, proportional-integral-derivative
