Assessment method for testing influence of electrical joint compound on reliability of electrical connection

Abstract

The invention discloses an assessment method for testing the influence of electrical joint compound on the reliability of electrical connection, and belongs to the technical field of engineering materials. According to the assessment method, two preprocessed wire clamps are put in a corrosion experiment box after the metal contact surfaces of the two wire clamps are closely connected, H2S gas is fed into the corrosion experiment box, the current is switched on in the wire clamps, and the contact resistance of the metal contact surfaces of the wire clamps and the change of temperature of the metal contact surfaces with time are tested. The assessment method is based on actual failure analysis and starts from the principle of large current and corrosive pollutants, and the influence of electrical joint compound on electrical connection under the condition that large current and corrosion coexist can be tested. The protective role of electrical joint compound to electrical connectors can be assessed effectively based on the actual working condition of electrical connectors, and the assessment method is of practical application value. By using the detection method provided by the invention, the detection result is accurate and effective.

Description

technical field [0001] The invention relates to an evaluation method for testing the influence of electric composite grease on the reliability of electric connectors, belonging to the technical field of engineering materials. Background technique [0002] With the rapid development of the economy, the demand for electricity is increasing, and higher requirements are placed on the transmission capacity. However, with the increase of the voltage level and the increase of the transmission current, the joint between the fitting and the wire becomes a weak link. As the overhead line is laid in the open air, it is exposed to wind, rain, frost and the sun. When the rainwater with corrosive substances soaks into the interior, corrosion holes will be formed on the surface, which will affect the safe operation of the power transmission and transformation line under high current conditions. . In heavy salt spray pollution areas such as coastal areas, this hazard is more obvious. Afte...

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Problems solved by technology

[0004] Since there are many types of compound grease and the application environment is complex, it is particularly important to evaluate the reliability of compound grease on power connectors. However, the current test of the effect of compound grease on the reliability of power connectors is only biased towards a certain performance. The detection is quite different from the actual working conditions of the power connector, especially when the reliability detection under the condition of corrosion and high current exists at the same time, there are very few researches.

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