Rapid determination of oxidation stability for transformer oils with antioxidant

Author

Zhou, Zhou ; Kai, Liu ; Tao, Wan ; Xu, Hu ; Hui, Qian ; Bing, Feng

Author_Institution

Hunan Electr. Power Corp. Res. Inst., Changsha, China

Volume

19

Issue

5

fYear

2012

fDate

10/1/2012 12:00:00 AM

Firstpage

1604

Lastpage

1608

Abstract

The service life of transformer oil is directly influenced by oxidation stability of the oil. However, the standard method of ASTM or IEC to assess oxidation stability of transformer oil is very time-consuming. After 2 h of accelerated aging of transformer oil at specified conditions of temperature, oxygen flow rate and catalyst, the consumption rate of antioxidant was measured by high performance liquid chromatography. By researching the relation between the consumption rate of antioxidant and acid value after 164 h oxidation, the quick assessment method for oxidation stability of transformer oil with antioxidant was established, and the assessment criterion for this method was proposed. The feasibility of the method, with its advantages of rapidness and easiness, has been proved through experiments using samples of in-operation transformer oil.

Keywords

IEC standards; chromatography; oxidation; transformer oil; ASTM; IEC; acid value; antioxidant; catalyst; consumption rate; in-operation transformer oil; liquid chromatography; oxidation stability determination; oxygen flow rate; quick assessment method; service life; temperature; Accelerated aging; Oil insulation; Oils; Oxidation; Power transformer insulation; Thermal stability; Oxidation stability; accelerated aging; assessment; consumption rate of antioxidant; transformer oil;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2012.6311506

Filename

6311506