摘要：The main objectives of load frequency control (LFC) are to regulate the electrical power supply
in two-area power system and change the system frequency and tie-line load. The performance
of LFC has to be tuned properly so that its performance can be optimised. However, most of the
tuning processes are performed through trial and error until the best performance is achieved.
Therefore, to overcome this situation, in this work, particle swarm optimization (PSO) and
evolutionary particle swarm optimization (EPSO) algorithms were employed in a LFC of twoarea
power system to optimise the performance of the PID controller. The purpose of using PID
controller is to improve the performance of the LFC. Comparison of the performance using
PSO and EPSO was made to identify which algorithm is better in controlling the performance
of the LFC. It was found that using EPSO, the performance of the LFC is better in terms of
settling time and rise time than using PSO. Hence, by implementing an optimisation method,
the performance of the LFC can be optimised through optimising the PID controller
parameters.
关键词：PID controller; power system; swarm optimisation; load frequency control.
