Analysis and Treatment of Three-Phase Unbalance Problem

Once the three-phase unbalanced problem occurs in the power supply and distribution system, it will cause damage to the lines, transformers and power equipment. This paper analyzes the causes and harms of the three-phase imbalance problem and summarizes the management methods of the three-phase imbalance problem. Finally, it is decided to use the active power filter to compensate the three - phase unbalanced load. And through the simulation software of MATLAB Simulink library of three-phase unbalanced state of reactive power compensation and harmonic control simulation, three-phase voltage from the oscilloscope waveform diagram and the voltage amplitude, according to the result analysis.