Power system harmonic state estimation via sparsity maximization
Thispaperpresentsanewsystem-wideharmonicstateestimationmethodwiththecapabilitytoidentifyharmonicsourceswithfewermetersthanstatevariables.Notethereareonlyafewsimultaneousharmonicsourcesamongthesuspiciousbuses.Byextendingtheconceptofobservability,theunderdeter-minedsystemcanbeobservable