Cable buffer layer partial discharge testing device capable of controlling temperature and humidity

Abstract

The invention relates to a cable buffer layer partial discharge testing device capable of controlling temperature and humidity. The cable buffer layer partial discharge testing device is mainly and technically characterized by comprising an alternating-current voltage-withstanding source, a testing electrode, a constant-temperature and constant-humidity box and a partial discharge acquisition device, wherein the testing electrode and a to-be-tested sample are installed in the constant-temperature and constant-humidity box, and the temperature and humidity in the testing process are controlledthrough the constant-temperature and constant-humidity box; the high-voltage electrode is connected with the high-voltage side of the alternating-current voltage-withstanding source through the protective resistor, the grounding electrode is connected with the ground wire side of the alternating-current voltage-withstanding source, a to-be-tested sample is installed between the high-voltage electrode and the grounding electrode and is in close contact with the high-voltage electrode and the grounding electrode, and the partial discharge acquisition device is installed between the grounding electrode and the ground wire side of the alternating-current voltage-withstanding source. The testing electrode and the to-be-tested sample are installed in the constant-temperature and constant-humidity box, the partial discharge analyzer is adopted, the partial discharge test function of the high-voltage cable buffer layer in different temperature and humidity environments is realized more accurately by controlling the temperature and humidity environment of the test, and the partial discharge test requirement of the high-voltage cable buffer layer is met.

Description

technical field [0001] The invention belongs to the technical field of high-voltage equipment, in particular to a temperature-humidity-controllable cable buffer layer partial discharge test device. Background technique [0002] The electric power industry is a basic industry related to the national economy and the people's livelihood. my country's economy continues to develop rapidly, people's living standards continue to improve, and the demand for electricity grows rapidly. Since the beginning of the 21st century, great achievements have been made in the field of electricity, and the use of electricity in cities has been increasing. However, urban land resources are expensive and limited, and the use of traditional overhead power transmission no longer meets the requirements of urban power transmission systems in the new era. In order to meet the new demands of urban cleanliness, the power cable transmission system has been developed. At present, the urban power transmis...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, propose a kind of controllable temperature and humidity cable buffer layer partial discharge test device, solve the high voltage cable buffer layer partial discharge detection problem under different temperature and humidity environments

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