This paper presents an optimization model based on minimum spanning tree required to deploy phasor measurement units PMU throughout the power system. Each candidate site for a PMU is placed at random from geo-referenced form and possible links between each release candidate site; therefore. The proposed algorithm allows to optimize the connections between each of the PMUs through the minimum spanning tree. The optimum placement of each PMU will facilitate failure analysis power system with the minimum cost for resources used. The work presented is based on the concept of smart grids seeking efficiency and reliability of the power system.