Power system harmonic state estimation via sparsity maximization

Thispaperpresentsanewsystem-wideharmonicstateestimationmethodwiththecapabilitytoidentifyharmonicsourceswithfewermetersthanstatevariables.Notethereareonlyafewsimultaneousharmonicsourcesamongthesuspiciousbuses.Byextendingtheconceptofobservability,theunderdeter-minedsystemcanbeobservable