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Study of Fault Diagnosis for Grounding Grid Using Fuzzy Theory

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3 Author(s)
Penghe Zhang ; Huazhong Univ. of Sci. & Technol., Wuhan, China ; Junjia He ; Zeguan Deng

In order to settle the problem of the exact fault placement on grounding grid, a new fault diagnosis method is brought forward based on the fuzzy theory. The two important principles of fuzzy theory, similar degree and furthest selection, are improved ground on the material problem of the fault diagnosis of grounding grid. Making use of the complex image method and Prony method, adopting the matlab program, the distribution of earth potential of the 10 × 10 intact and fault grounding grid are calculating. These are the sample data-base. Adopting VC++ program, calculating the relation between the intact grounding grid sample and the fault grounding grid sample based on the improved fuzzy similar degree, the fault sample data-base are diagnosed. Subsequently, calculating the difference between the fault samples, the fault placement of grounding grid is diagnosed based on the principle of furthest selection. The result indicates the exact radio is very high.

Published in:

Intelligent Computation Technology and Automation (ICICTA), 2010 International Conference on  (Volume:3 )

Date of Conference:

11-12 May 2010