Analysis of Harmonics of 132/33 KV in Benin City, Nigeria Using Compensation Technique

The work is focused on the analysis of harmonic in four number power transformers of 132/33 kV which are 3 x 60MVA and 1 x 30 MVA; instrument used to measure the parametric data of harmonic current is power harmonic analyzer Owon’ (HDS1021M) Handheld Digital Storage Scope. The simulation was performed using three-phase programmable voltage source transformer over load tap changer (OLTC). The load variation used for the simulation of transformers in these eight substations feeders. The results obtained showed comparison before compensation the values of kW, % PF and % loading and that after compensation showed that the compensation technique used for the analysis of these transformers showed great improvement.

Keywords: power transformers; compensation; simulation; over load tap changer; electric transient analyzer program