Combined test device for surface flashover and breakdown of transformer oil-paper insulation

Abstract

A transformer paper oil insulation surface flashover and breakdown joint test device comprises an oil bath module, a high-voltage source module, a CCD observation module, a detection electrode and aninsulation support module. The detection electrode and the insulation support module are arranged in the oil bath module, the CCD observation module configured to observe the surface flashover and breakdown of a sample in real time is located at the external portion of the oil bath module, and the high-voltage source module is connected with the detection electrode and is configured to perform switching of the surface flashover experiment high voltage and a breakdown experiment high voltage through a high-voltage relay. The transformer paper oil insulation surface flashover and breakdown jointtest device achieves experiment device development for the dependency of the paper oil insulation surface flashover performances and breakdown performances, performs surface flashover experiment forthe same sample and then performs breakdown experiment for the same sample to research the influence of the sample surface flashover on the breakdown performances.

Description

technical field [0001] The invention relates to a technology in the field of insulating material testing, in particular to a device for realizing the combined testing of the surface flashover performance and breakdown performance of transformer oil-paper insulation. Background technique [0002] The insulation level of transformer oil paper has always been a hot issue that people have been continuously studying. The main insulation of transformers with a tolerance of ±800kV and above uses oil-paper composite insulation, and the structure of oil-impregnated paper board is often used to meet the requirements of the voltage level of the transformer. At present, the test devices for the surface flashover and breakdown performance of transformer oil-paper insulation at home and abroad use a single detection device for separate measurement, and it is impossible to jointly measure the surface flashover performance and breakdown performance of the same sample. [0003] In the prior ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the single limitation of the test performance of the detection device in the existing oil-paper breakdown and surface flashover research, the present invention proposes a transformer oil-paper insulation surface flashover and breakdown joint test device, which performs surface flashover and breakdown on the same sample Experimental combined measurement to study the breakdown performance of the oil-paper sample after flashover along the surface, and determine the influence of the flashover of the sample on the breakdown performance of the material

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