Experimental Determination of Parameters of Nonlinear Electrical Load

Aleksandr Skamyin, Yaroslav Shklyarskiy, Vasiliy Dobush and Iuliia Dobush
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Aleksandr Skamyin: Department of Electric Power and Electromechanics, Saint-Petersburg Mining University, 199106 Saint-Petersburg, Russia
Yaroslav Shklyarskiy: Department of General Electrical Engineering, Saint-Petersburg Mining University, 199106 Saint-Petersburg, Russia
Vasiliy Dobush: Department of General Electrical Engineering, Saint-Petersburg Mining University, 199106 Saint-Petersburg, Russia
Iuliia Dobush: Department of General Electrical Engineering, Saint-Petersburg Mining University, 199106 Saint-Petersburg, Russia

Energies, 2021, vol. 14, issue 22, 1-14

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

Keywords: harmonics; total harmonic distortion; power quality; nonlinear electrical load; capacitor banks; passive filters; experimental study; six-pulse rectifier; thyristor regulator; modeling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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