Online multisensor monitoring system for insulation condition of oil-immersed power transformer

Author

Zhao, Wen-Bin ; Zhang, Guan-Jun ; Sun, Yan ; Yan, Zhang ; Xu, Da-Ke

Author_Institution

Sch. of Electr. Eng., Xi´´an Jiaotong Univ., China

fYear

2004

fDate

19-22 Sept. 2004

Firstpage

89

Lastpage

92

Abstract

An online monitoring and diagnostic system for a 220 kV oil-immersed power transformer with 3 windings has been established in a substation of China. The operation monitoring and insulation condition evaluation were integrated into this system. Many sensors were applied to monitor multiple insulation items such as partial discharge, dissolved gas, moisture in oil, oil temperature, coil hot spot temperature, iron core current, bushing condition and so on. The structure of the system was introduced and a diagnostic flow, via information fusion technology, was presented. Based on the system, it is easy to obtain the operating condition and insulation condition of the transformer.

Keywords

bushings; partial discharges; power transformer insulation; power transformer testing; sensors; transformer cores; transformer oil; transformer substations; transformer windings; 220 kV; China; bushing condition; diagnostic flow; information fusion technology; iron core current; oil temperature; oil-immersed power transformer insulation; online multisensor monitoring system; partial discharge; sensors; substation; transformer windings; Condition monitoring; Gas detectors; Gas insulation; Oil insulation; Partial discharges; Petroleum; Power transformer insulation; Power transformers; Substations; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on

ISSN

1089-084X

Print_ISBN

0-7803-8447-4

Type

conf

DOI

10.1109/ELINSL.2004.1380464

Filename

1380464