Embedded system to grounding grid diagnosis of energized substations

Author

Gomes, L.V. ; de Macedo, E.C.T. ; Albuquerque, T.C. ; Guedes, E.C. ; Junior, G.V.A. ; de Castro, M.S. ; Freire, R.C.S.

Author_Institution

Electr. Eng. Dept., Fed. Univ. of Campina Grande - UFCG, Campina Grande, Brazil

fYear

2012

fDate

13-16 May 2012

Firstpage

796

Lastpage

800

Abstract

In this paper is presented the development of a diagnosis system applied to high voltage (HV) energized grounding grids, based on the monitoring of the substation surface voltage potentials, to identify the localization of possible imperfections or defects (e.g. zones of high ohmic resistance, corrosion, discontinuity) in the grounding grid. It was developed an embedded electronic system capable to measure and process several surface voltages distributed throughout the grounding grid. After the data processing using the finite difference method, the system presents the grounding grid conditions using 2D graphs and numerical rapports. The analysis was performed based on the industrial voltage frequency.

Keywords

earthing; embedded systems; fault diagnosis; finite difference methods; power grids; power system measurement; substation automation; surface potential; voltage measurement; 2D graph; data processing; defect localization identification; embedded electronic system; finite difference method; grounding grid diagnosis; industrial voltage frequency; numerical rapport; substation monitoring; surface voltage potential monitoring; surface voltages measurement; Electric potential; Embedded systems; Finite difference methods; Grounding; Substations; Voltage measurement; Embedded system; Finite difference method; Grounding grid diagnosis; Surface potentials;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International

Conference_Location

Graz

ISSN

1091-5281

Print_ISBN

978-1-4577-1773-4

Type

conf

DOI

10.1109/I2MTC.2012.6229717

Filename

6229717