Assessments for the impact of harmonic current distortion of non linear load in power system harmonics

The effects of non linear loads to the electric power line distribution for three phase four wire systems are described in this paper. The various ranges and combination for modern set components of non linear loads which are sources of harmonics currents are monitored by experimental works. Further investigations on the three various loads such as resistive, inductive and capacitive loads into three phases four wire systems are simulated and measured by practically are carried out. Both simulation and experimental results shows that the non linear load can be caused the power factor in power lines are decreased and the return current in neutral line increases abruptly even though the system is balanced system are discussed.