Investigation of the effect of winding clamping structure on frequency response signature of 11 kV distribution transformer

Murthy, Avinash Srikanta and Azis, Norhafiz and Al-Ameri, Salem and Mohd Yousof, Mohd Fairouz and Talib, Mohd Aizam (2018) Investigation of the effect of winding clamping structure on frequency response signature of 11 kV distribution transformer. Energies, 11 (2307). pp. 1-13. ISSN 1996-1073

Text
AJ 2018 (512).pdf
Restricted to Registered users only
Download (2MB) | Request a copy

Official URL: http://dx.doi.org/10.3390/en11092307

Abstract

This paper presents an investigation on the sensitivity of frequency response of a 500 kVA, 11/0.433 kV distribution transformer with and without the presence of a winding clamping structure. Frequency response analysis (FRA) measurements of multiple test configurations were carried out with and without the presence of a winding clamping structure. Statistical analyses based on Pearson’s correlation coefficient (PCC), Spearman’s correlation coefficient (SCC), Kendall’s correlation coefficient (KCC), cross-correlation coefficient (CCF), root mean square error (RMSE), absolute sum of logarithmic error (ASLE), hypothesis test (F-test) and relative factor (RF) were applied to determine the effect of the winding clamping structure. It was found that the removal of the winding clamping structure has an impact on the frequency response signature at the frequency less than 2 kHz during offline measurement. It was found that ASLE and F-test are suitable methods that can be used to indicate the variation of frequency response caused by clamping structure removal of the distribution transformer under study.

Item Type:	Article
Uncontrolled Keywords:	frequency response analysis (FRA); distribution transformer; winding clamping structure; statistical analysis
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2000-2891 Dynamoelectric machinery and auxiliaries. Including generators, motors, transformers
Divisions:	Faculty of Electrical and Electronic Engineering > Department of Electrical Engineering
Depositing User:	UiTM Student Praktikal
Date Deposited:	09 Jan 2022 06:08
Last Modified:	09 Jan 2022 06:08
URI:	http://eprints.uthm.edu.my/id/eprint/5389

Actions (login required)

View Item