This paper represents performance of particle swarm

\r\noptimisation (PSO) algorithm based integral (I) controller and

\r\nproportional-integral controller (PI) for interconnected hydro-thermal

\r\nautomatic generation control (AGC) with generation rate constraint

\r\n(GRC) and Thyristor controlled phase shifter (TCPS) in series with

\r\ntie line. The control strategy of TCPS provides active control of

\r\nsystem frequency. Conventional objective function integral square

\r\nerror (ISE) and another objective function considering square of

\r\nderivative of change in frequencies of both areas and change in tie

\r\nline power are considered. The aim of designing the objective

\r\nfunction is to suppress oscillation in frequency deviations and change

\r\nin tie line power oscillation. The controller parameters are searched

\r\nby PSO algorithm by minimising the objective functions. The

\r\ndynamic performance of the controllers I and PI, for both the

\r\nobjective functions, are compared with conventionally optimized I

\r\ncontroller.<\/p>\r\n","references":null,"publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 91, 2014"}