Transformer windings hot spot temperature modeling and simulation

Author

Elmoudi, A.

Author_Institution

Electr. Eng. Technol. Dept., Red River Coll. of Appl. Sci. & Technol., Winnipeg, MB, Canada

fYear

2014

fDate

4-7 May 2014

Firstpage

1

Lastpage

5

Abstract

This paper presents simplified simulation models to determine the winding hot spot temperature of a transformer. The models use measured oil temperature(s), load current and transformer winding data as inputs. The simulated winding hot spot temperature showed good agreement with the temperature measured on 250 MVA transformer equipped with fiber optic probes. The models can be implemented in an on line monitoring system. The determined winding hot spot temperature can be used to assess the insulation ageing, the risk of bubble formation. It is also important for more efficient control of the cooling.

Keywords

power transformers; transformer windings; bubble formation; cooling control; fiber optic probes; hot spot temperature modeling; insulation ageing; online monitoring system; transformer winding hot spot temperature; Equations; Load modeling; Mathematical model; Oil insulation; Power transformer insulation; Temperature measurement; Windings; Power Transformers; Temperature; Thermal factors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering (CCECE), 2014 IEEE 27th Canadian Conference on

Conference_Location

Toronto, ON

ISSN

0840-7789

Print_ISBN

978-1-4799-3099-9

Type

conf

DOI

10.1109/CCECE.2014.6901094

Filename

6901094