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The method study of fault diagnosis for grounding grid adopting the near degree

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

The reliable characters of grounding grid influence the safe and steady operations of the power system, but the grounding grid are mostly buried under the earth. It is very difficult to diagnose the fault of the grounding grid in this instance of no excavating the grounding grid. For settling the problem, a new method adopting the near degree for diagnosing the fault of grounding grid is put forward. Firstly, the calculative theory adopting the near degree for diagnosing the fault of the grounding grid is described. Secondly, using the software of CDEGS and ANSYS analyzes and computes the theory, and a model of gullet stimulant test is established. Making up of all kinds of fault grounding grid to simulate the spot instance, using the probe to measure the potential, using the theory of degree of nearness to diagnose the fault of the grounding grid, it is feasible and exact to diagnose the fault of the grounding grid adopting the fuzzy degree of nearness experimentally and theoretically.

Published in:

Power System Technology (POWERCON), 2010 International Conference on

Date of Conference:

24-28 Oct. 2010