Economic Load Dispatch (ELD) proves to be a vital optimization process in electric power system for allocating generation amongst various units to compute the cost of generation, the cost of emission involving global warming gases like sulphur dioxide, nitrous oxide and carbon monoxide etc. In this dissertation, we emphasize ramp rate constriction factor based particle swarm optimization (RRCPSO) for analyzing various performance objectives, namely cost of generation, cost of emission, and a dual objective function involving both these objectives through the experimental simulated results. A 6-unit 30 bus IEEE test case system has been utilized for simulating the results involving improved weight factor advanced ramp rate limit constraints for optimizing total cost of generation and emission. This method increases the tendency of particles to venture into the solution space to ameliorate their convergence rates. Earlier works through dispersed PSO (DPSO) and constriction factor based PSO (CPSO) give rise to comparatively higher computational time and less good optimal solution at par with current dissertation. This paper deals with ramp rate and constriction factor based well defined ramp rate PSO to compute various objectives namely cost, emission and total objective etc. and compares the result with DPSO and weight improved PSO (WIPSO) techniques illustrating lesser computational time and better optimal solution. <\/p>\r\n","references":"[1]\tM. L Jose, L.T Alicia and S.R Jesus, \u201cShort term hydrothermal coordination based on interior point nonlinear programming and genetic Algorithm\u201d, EE Porto power Tech conference, 2001.\r\n[2]\tM. G. CW, Aganagic JG, Tony M Jose B and Reeves S, \u201cExperience with mixed integer linear programming based approach on short term hydrothermal scheduling, IEEE transaction on power system, Vol.16 (4), pp.743-749.\r\n[3]\tNg and G. 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