Study of Harmonics Contribution by Various Types of Loads in a Low Voltage Distribution System and Reduction of Harmonics

This paper studies the different sources of harmonics from residential and commercial loads in the low voltage distribution zone. To study the impact of harmonics, an IEEE 33 bus radial distribution system is considered. Different types of nonlinear loads are assumed to be distributed along the radial distribution system. The contribution of harmonics by any one non linear load has almost no significant effect. This paper shows that their cumulative effect can produce a noticeable amount of harmonics and hence has a poor impact on power quality. Some techniques are also applied to study how the harmonics can be reduced. The program is simulated with the help of MATLAB.