Powers Balances in the AC Circuit with Nonlinear Load and Reactive Power Compensation

The paper deals with analysis of definitions of reactive power. Properties of reactive power described as proportional to the product of the instantaneous values of voltage and current time derivative are presented. The analysis of the active and reactive power propagation in the circuit with nonlinear load, which the voltage is proportional to the signum function of the current and supplied by means of R, L elements from sinusoidal voltage source with reactive power compensation were made. A mathematical model circuit, with dimensionless variables and operational diagram of the circuit in Simulink were created. An analysis of nonlinear load equivalent circuit and balances of active and reactive power of the fundamental and higher harmonics were performed.