Staged Placement of PMUs in a Power Grid

Nowadays power grid are equipped with new technological devices, thereby becoming a Smart grid. Monitoring of electrical quantities by such smart device called PMU is performed to have a better situational awareness. Grid comprises of large number of buses and it is not possible for electric utility to place PMUs in each bus, that too, in a single stage. Therefore PMUs are placed at strategic location in phased manner. In this paper, algorithm is presented to place PMUs phase-wise ensuring the maximum grid observability at each stage. Placement strategy also incorporates any grid expansion scenario, if occurs during complete placement phases. Performance of algorithm is verified on IEEE 14 bus and IEEE 30 bus test system.