8NIE G X.Research on the design of the single-phase multi-tariff electronic wattmeter[J].Advances in energy engineering (ICAEE),2010 International conference on,2010:77-80.
9SAMRA A H,SYED K S.DSP based virtual power measurement in nonsinusoidal electric systems[C].Southeastcon '97','Engineering new New Century',IEEE,1997:334-336.
