Experimental Determination of Parameters of Nonlinear Electrical Load

The paper deals with issues of modeling nonlinear electrical loads various types, such an uncontrolled rectifier, thyristor power regulator and mixed equivalent load. For these load existing analytical expressions were identified to determine the magnitudes harmonic currents, waveforms currents obtained during measurements in laboratory conditions variable parameters grid impedance results compared, it was found that error determining can reach 60% for individual 54% A more accurate method is also proposed, which based on application shunt filters. In conditions, when using developed method, did not exceed 10% 14%