Application of Near-Infrared Spectroscopy to Measure the Water Content in Liquid Dielectrics
[ 1 ] Instytut Elektroenergetyki, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | [ P ] employee
2022
scientific article
english
- water content
- liquid dielectrics
- synthetic ester
- natural ester
- mineral oil
- capacitive sensor
- Karl Fischer titration method
- near-infrared spectroscopy
- power transformer
EN The article discusses the methods used to measure the water content in liquid dielectrics. The pros and cons of currently used methods are presented. The main aim of the research was to check the possibility of using near-infrared spectroscopy to measure the water content in liquid dielectrics. On the basis of the conducted research, the absorbance bands are indicated that can be used to determine the water content in synthetic and natural esters. These bands are centered at 1901 and 1904 nm for natural and synthetic esters, respectively. The determined dependence of the absorbance on the water content in liquid dielectrics confirmed the linear nature of this relationship. Moreover, the influence of liquid aging degree on the result of absorbance measurements was checked. The verification of the method allowed for confirming the possibility of using near-infrared spectroscopy for the reliable quantitative analysis of water content in synthetic and natural esters.
5907-1 - 5907-11
article number: 5907
CC BY (attribution alone)
open journal
final published version
public
140
3,2