Improved time varying inertia weight PSO for solved economic load dispatch with subsidies and wind power effects

Young Researchers and Elite Club, Ardabil Branch, Islamic Azad University, Ardabil, IranReceived 8 May 2014; revised 30 August 2014; accepted 5 October 2014This article presents a new approach to economic load dispatch (ELD) problems by the considering the cost func-tions, impact renewable energy as wind turbin and subsidies.Economicdispatch is the short-term determination ofthe optimal output of a number of electricity generation facilities, to meet the system load, at the lowest possiblecost, subject to transmission and operational constraints. The main goal in the deregulated system is subsidies andanalysis performance on government to minimize the total fuel cost while satisfying the load demand and opera-tional constraints. The practical ELD problems have nonsmooth cost functions with equality and inequality con-straints, which make the problem of finding the global optimum difficult when using any mathematicalapproaches. Accordingly, particle swarm optimization with time-varying inertia weight (PSO-TVIW) used for solv-ing this problem. The effectiveness of the proposed strategy is applied over real-world engineering problem andhighly constrained. Obtained results indicate that PSO-TVIW can successfully solve this problem.