Effectiveness of admixturing treatment of aged transformer oils

Author

Gacek, Z.

Author_Institution

Silesian Tech. Univ., Gliwice, Poland

fYear

1990

fDate

28-31 Oct 1990

Firstpage

301

Lastpage

306

Abstract

The effectiveness of admixturing treatment is considered in the macroscopic formulation. This maintenance activity consists of the insertion of a small amount of suitable organic acid (not more than 0.1% by weight) to partially aged transformer oil in due time. The admixturing effects are evaluated by means of tanδ measurements made for oils in service. The effectiveness of the admixturing treatment depends on the electrical parameters of power transformers and seems to be especially satisfactory for MV transformer units. From field investigations it appears that tanδ mean values of admixtured oils may decrease temporarily by several times and the long-term admixturing effects are justified by the substantial prolongation of the operating time of certain transformer units

Keywords

dielectric losses; insulating oils; maintenance engineering; power transformers; transformer insulation; MV transformer units; admixtured oils; admixturing effects; admixturing treatment effectiveness; dielectric loss measurements; field investigations; macroscopic formulation; maintenance activity; organic acid additive; partially aged transformer oil; power transformers; tanδ measurements; Aging; Cleaning; Coagulation; Conductivity; Dielectrics and electrical insulation; Impurities; Network address translation; Oil insulation; Petroleum; Power transformer insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on

Conference_Location

Pocono Manor, PA

Type

conf

DOI

10.1109/CEIDP.1990.201358

Filename

201358