Optimal PMU placement for state estimation robustness

Given a sufficient number of properly placed synchronized voltage and current phasor measurements, an L₁ estimator (also known as the Least Absolute Value or LAV estimator) can be shown to be robust against gross measurement errors. This paper is concerned about the placement of phasor measurement units (PMU) in order to establish a desired level of robustness. It develops a PMU placement strategy which will ensure a desired level of robustness for an L₁ state estimator against bad measurements.