Abstract: The Phasor Measurement Unit (PMU) is a key device for monitoring and control of the power system network. It gives real time, synchronized measurements of voltages at the buses and also current phase values which are incident to those buses where these PMUs are located. This paper presents atopological approach to determine the optimal PMU placement in order to make the system completely observable usinginteger linear programming. The proposed formulation is tested on IEEE 14 test systems and results so obtained for complete observability of system at normal condition is presented in this paper. The proposed PMU placement has been implemented on IEEE 14 bus systems.

Keywords: Phasor Measurement Unit, Optimal PMU Placement, Integer Linear Programming.