Ancillary services dispatch in a competitive electricity market using the simultaneous optimisation technique and the genetic algorithm

In the last few years there has been a worldwide trend toward restructuring the electricity supply industry and consequently energy markets were created. In this competitive environment ancillary services play a very important role to withstand the security level during the electric power system operation. This paper is devoted to the study and analysis of the ancillary services dispatch in a competitive electric market. The simultaneous optimization technique and the genetic algorithm were used to obtain the results, considering a daily load diagram scenario. Different probability values for the use of the ancillary services were considered as well as the minimum limits. Finally, the solutions produced by the two formulations were compared and some important conclusions that provide a contribution to a better understanding of the competitive electricity market are pointed out.