Reliability of parallel connected power transformers with failure correlation and its preventive maintenance

Author

Bo Yang

Author_Institution

Dept. of Electr. Eng., Guangxi Electr. Polytech. Inst., Nanning, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

1044

Lastpage

1047

Abstract

This paper studies reliability of power substation with parallel connected power transformers and its preventive maintenance strategy. The processes of transformers failure are modeled by Poisson processes with correlation. Representing by multi-Gaussian Copula function, the mathematical formula of reliability of three power transformers connected parallel is given, and the reliability of substation with preventive maintenance schedule is studied. By the mean of Monte Carlo simulation, the reliability of three power transformers parallel connected is calculated, and its preventive maintenance schedule is discussed. The research of the paper shows that the failure correlation of transformers is key factor to the preventive maintenance schedule.

Keywords

Monte Carlo methods; failure analysis; power transformers; preventive maintenance; stochastic processes; substations; Monte Carlo simulation; Poisson processes; failure correlation; multi-Gaussian Copula function; parallel connected power transformer reliability; power substation reliability; preventive maintenance strategy; transformer failure; Correlation; Power system reliability; Power transformer insulation; Preventive maintenance; Reliability; Substations; Monte Carlo Simulation; Parallel Connected; Poisson Process; Power Transformers; Preventive Maintenance; failure correlation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7013623

Filename

7013623