Showing papers by "Binod Kumar Sahu published in 2013"
10 Apr 2013
TL;DR: The system is found to be robust and performs better when tuned by the PSO algorithm and is checked for robustness by varying the parameters of the governor, turbine and reheat from -50% to +50% in steps of 25%.
Abstract: This paper deals with design and analysis of automatic generation control (AGC) of a two area interconnected thermal power system using proportional-integral-derivative (PID) controller. In order to get realistic approach, both the areas are considered with reheat and governor with dead band which makes the system non-linear. The controller parameters are tuned by using particle swarm optimization (PSO) and differential evolution (DE) algorithms. Dynamic response of the PID controlled AGC tuned by both the algorithms are compared by applying 1% step load perturbation (SLP) in area-1.The cost function is derived by taking the area control errors (AEC) of both the areas. The system is checked for robustness by varying the parameters of the governor, turbine and reheat from -50% to +50% in steps of 25%. Based on analysis, facts & figures the system is found to be robust and performs better when tuned by the PSO algorithm.
12 citations
1 citations
TL;DR: The coordinated design of power system stabiliser (PSS) and a static synchronous compensator (STATCOM)-based controller and PSSs for power system stability improvement and results show that the inter-area and local modes of oscillations are well damped with the proposed BFOA-optimised controllers.
Abstract: The coordinated design of power system stabiliser (PSS) and a static synchronous compensator (STATCOM)-based controller for power system stability improvement is presented in this paper. The design problem is formulated as a parameter constrained, simulation-based, non-linear optimisation problem and bacteria foraging optimisation algorithm (BFOA) is employed to determine the optimal controller parameters. The performance of the proposed controllers is evaluated and compared with a conventional power system stabiliser (CPSS) in a single-machine infinite-bus power system subjected to various transient disturbances. The non-linear simulation results show that the proposed coordinately designed STATCOM-based controller and PSSs improve greatly the system damping and are robust to variation in operating conditions and fault clearing sequence. Finally, the coordinated design problem is extended to a four-machine two-area system and the results show that the inter-area and local modes of oscillations are well damped with the proposed BFOA-optimised controllers.