Optimal PMU Placement for Numerical Observability Considering Fixed Channel Capacity—A Semidefinite Programming Approach

This letter presents a 0-1 semidefinite programming (SDP) approach to solve the problem of optimal placement of phasor measurement units (PMUs), considering the existence of conventional measurements and zero injections as well as the impact of PMU channel limits. The proposed formulation can prevent the wasteful utilization of different PMUs observing incident branch current phasors at a given bus more than once. The method is tested on the IEEE 57-bus test system.