A dielectric response test device for oil-paper composite insulation

Abstract

The invention discloses an oil-paper composite insulation dielectric response test device and relates to the technical field of insulation test. The device comprises a shell and an electrode system. The electrode system is mounted in the shell. The shell further comprises a clamping mechanism, a temperature control system, and a supporting mechanism. An electrode and a test sample are clamped inside the shell through the clamping mechanism. The supporting mechanism used for mounting the clamping mechanism and the temperature control system is arranged on the outside of the shell. A positioningclamp is annular. According to the oil-paper composite insulation dielectric response test device, convenient replacement of the electrode is achieved by means of the combined design of the clampingmechanism and the supporting mechanism, the monitoring and regulation of the internal temperature of the shell are realized by means of the temperature control system, so as to accurately judge the relationship between the observation temperature and the insulation information; and the increasing creepage distance and the eliminating edge flashover are realized by using the positioning clamp annular design.

Description

technical field [0001] The invention relates to the technical field of insulation testing, in particular to a dielectric response testing device for oil-paper composite insulation. Background technique [0002] Oil-paper insulation system is widely used in oil-immersed transformer equipment because of its good insulation and heat dissipation. During the long-term operation of oil-immersed transformers, the oil-paper insulation system is not only affected by electricity, but also affected by various factors such as thermal stress, mechanical force and environment. The prediction and evaluation of transformer insulation aging has become an important topic. Equipment personnel often use oil-paper insulation polymerization degree measurement method, furfural content measurement method and dissolved gas method in oil to carry out insulation aging and evaluation of oil-immersed transformers. However, these methods all require hanging covers and coring, which will damage the insu...

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Problems solved by technology

In order to better apply the dielectric response technology to study the diagnosis method of transformer oil-paper insulation in the laboratory, the existing test system has the following problems: (1) The shape of the electrode is relatively simple, and the electrode cannot be replaced conveniently, and the shape of the electrode is single The types of discharge faults that can be simulated are limited. (2) The test system cannot adjust the temperature, so the relationship between temperature and insulation information cannot be obtained. It is difficult to simulate internal overheating faults, the influence of operating temperature and ambient temperature, etc., and it is difficult to accurately Judging the relationship between observed temperature and insulation information

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