Return voltage testing method used for fault diagnosis of distribution equipment

Abstract

The invention relates to a return voltage testing method for fault diagnosis of distribution equipment, which comprises the following steps: constructing a return voltage method testing platform in alaboratory, performing a test aiming at a solid insulating material used by transformation and distribution equipment, and exploring a return voltage method changing rule of a test sample under the condition of comparing different humidities and aging degrees; performing analysis aiming at field actual measurement results by using a statistical analysis method, and extracting an insulation fault diagnostic criterion of the distribution equipment from the analysis; and performing comprehensive analysis on return voltage method evaluation parameters and field judgment bases to develop an expertsystem based on a return voltage method. Compared with the prior art, the return voltage testing method introduces a novel testing method namely the return voltage method to profitably supplement a field transformer testing technique and effectively improve the running reliability of the transformer, has a very extensive application prospect, and not only has very good economic benefits but also has great social functions.

Description

technical field [0001] The invention relates to the application of the recovery voltage method, in particular to a recovery voltage test method for fault diagnosis of power distribution equipment. Background technique [0002] With the accelerated growth of my country's electricity demand, a large number of power distribution equipment is approaching or exceeding its design operating life, and it is very meaningful to comprehensively diagnose and evaluate the solid insulation status and life of such equipment. On the other hand, the fault diagnosis technology of power distribution equipment still has great deficiencies in terms of cost, operability, and representativeness of solid sample selection, so it is urgent to introduce more and more effective test methods to supplement the actual application in the field. The return voltage method (Return Voltage Method, RVM) is a novel and simple non-destructive off-line fault diagnosis method, which uses the basic principle of diel...

AI Technical Summary

Problems solved by technology

On the other hand, the fault diagnosis technology of power distribution equipment still has great deficiencies in terms of cost, operability, and representativeness of solid sample selection, so it is urgent to introduce more and more effective test methods to supplement the actual application in the field.