HARMONIC LOAD MODELING: A CASE STUDY OF 33 KV ABUJA STEEL MILL FEEDER

Authors

  • MN Nwohu ELECTRICAL/ELECTRONIC ENGR. DEPARTMENT, FED. UNIV. OF TECHNOLOGY, MINNA, NIGER STATE, NIGERIA
  • B Tanko MONITORING AND EVALUATION DEPARTMENT, TRANSMISSION COMPANY OF NIGERIA, ABUJA, NIGERIA
  • H Ohize ELECTRICAL/ELECTRONIC ENGR. DEPARTMENT, FED. UNIV. OF TECHNOLOGY, MINNA, NIGER STATE, NIGERIA
  • AA Sadiq ELECTRICAL/ELECTRONIC ENGR. DEPARTMENT, FED. UNIV. OF TECHNOLOGY, MINNA, NIGER STATE, NIGERIA
  • AA Usman ELECTRICAL/ELECTRONIC ENGR. DEPARTMENT, FED. UNIV. OF TECHNOLOGY, MINNA, NIGER STATE, NIGERIA

DOI:

https://doi.org/10.4314/njt.364.1490

Keywords:

Harmonic order, Power quality, Transmission grid, ETAP, Tuned filters

Abstract

An in-depth study of the harmonic orders inherent in a power system network is required before mitigation techniques are adopted. This paper studied the harmonic orders of the 33 kV Abuja Steel Feeder modeled as a harmonic source using measured data. Readings of kW, kVar, kV and Hz were obtained using power quality analyzer (PQube) to identify the trend and the harmonic unbalance on the feeder. Electrical Transient Analyzer Program (ETAP) software package was deployed to perform Discrete Fast Transform (DFT) while the input parameters were the resultant relative amplitudes and phase angles for both the current and voltage source models. The current source model spectrum of the feeder under study revealed that the 11th and 13thharmonic orders have the highest percentage of amplitude relative to the fundamental compared to the other harmonics. On the other hand, the voltage source model spectrum showed that the 14th, 15th, 16th, 17th, 32nd, 33rd and 34thharmonic orders have higher percentage of relative amplitude. However, only the 3rd and 5thharmonic orders were found to cause severe harmonic distortion of voltage and current after harmonic analysis and frequency scan were performed on the ETAP platform.

http://dx.doi.org/10.4314/njt.v36i4.27

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Published

2017-09-29

Issue

Section

Computer, Telecommunications, Software, Electrical & Electronics Engineering

How to Cite

HARMONIC LOAD MODELING: A CASE STUDY OF 33 KV ABUJA STEEL MILL FEEDER. (2017). Nigerian Journal of Technology, 36(4), 1184-1190. https://doi.org/10.4314/njt.364.1490