Research on power tracing methods at frequencies from 400 Hz to 100 kHz

Proposes a new power tracing method named with RMS-Impedance by comparing the advantages and disadvantages of several wideband power measurement methods, and gives the principles and realizations of RMS-Impedance Method, Three Parameters Method and Three Voltmeters Method. In order to build a wideband power standard, we compare and verify these three methods by experiments, and try a new power tracing approach.