College of Engineering

A master thesis was discussed in Department of Electrical Engineering / College of Engineering / University of Mosul entitled “Electrical Power System Harmonics Analysis and Elimination Using ETAP” submitted by (Safa Ahmed Younis)on Thursday, Feb. 17, 2022.The thesis aims to build a simulation model of circular nine bus system to evaluate characteristics of harmonics in different cases of study using Electrical Transient and Analysis Program (ETAP), which is considered one of the best tools to study harmonics in the power system. To generate a harmonic distortion in the power network, a general load was modelled as a source of harmonics. A harmonic load flow analysis was carried out in order to determine the impact of harmonic current on a power network, and the THD% of all types of harmonic models on all the buses was checked and the typical IEEE model that has the highest THD% was chosen and compared with the model that contains low THD% indices. Thus, the harmonic distortion is analyzed in ETAP and mitigation techniques are used represented by single tuned filters which should be installed for worst case and the best case condition, and the simulation results of ETAP shows that some of THDv,i% results are within the limit value respect to IEEE 519 -1992 standard.