Abstract
In this paper, the Authors present the designing of power system stabilizer (PSS) and static var compensator (SVC) based on chaos, particle swarm optimization (PSO) and shuffled frog leaping (SFL) Algorithms has been presented to improve the power system stability. Single machine infinite bus (SMIB) system with SVC located at the terminal of generator has been considered to evaluate the proposed SVC and PSS controllers. The coefficients of PSS and SVC controller have been optimized by Chaos, PSO and SFL algorithms. Fi-nally the system with proposed controllers is simulated for the special disturbance in input power of genera-tor, and then the dynamic responses of generator have been presented. The simulation results show that the system composed with recommended controller has outstanding operation in fast damping of oscillations of power system and describes an application of Chaos, PSO and SFL algorithms to the problem of designing a Lead-Lag controller used in PSS and SVC in power system.
Highlights
Power systems experience low frequency oscillations during and after a large or small disturbance has happened to a system, especially for middle to heavy loading conditions [1]
The fitness function used in this paper for Chaos, Particle Swarm Optimization (PSO) and Shuffled Frog Leaping (SFL) algorithms is represented in Equation (30) that tsim is the simulation time, dw is the deviation of speed and dvt is the deviation of terminal voltage of generator
In this paper the Single Machine Infinite Bus (SMIB) system where Static Var Compensator (SVC) located at the terminal of generator has been considered
Summary
Power systems experience low frequency oscillations (in the range of 0.1 Hz to 2.5Hz) during and after a large or small disturbance has happened to a system, especially for middle to heavy loading conditions [1]. These oscillations may sustain and grow to cause system separation if no adequate damping is available [2]. SVC has the functional capability to handle dynamic conditions, such as transient stability and power oscillation damping in addition to providing voltage regulation [6]. Controller has been simulated for the special disturbance and the dynamic response of generator has been presented
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