Cable buffer layer repair effect measuring device based on capacitance current analysis

Abstract

The invention relates to a cable buffer layer repair effect measuring device based on capacitance current analysis, which is mainly technically characterized by comprising a voltage regulator, a voltage booster, a voltage divider, a current transformer and a measuring host, whereinthe voltage regulator is connected with the voltage booster and is used for controlling the voltage booster to boost, the voltage divider divides the high voltage generated by the voltage booster and applies the voltage to a crosslinked polyethylene cable conductor, the voltage divider is connected with a voltage divider digital display meter, a cable aluminum sheath outside the crosslinked polyethylene cable conductor is grounded through a grounding wire, the grounding wire is provided with a current transformer in a penetrating manner and is connected with a digital ammeter, measurement results of the voltage divider digital display meter and the digital ammeter are output to the measurement host, and the measurement host judges the repair effect. The device is reasonable in design, can effectively evaluate the electrical performance defect repair effect of the buffer layer of the high-voltage crosslinked polyethylene cable, has the characteristics of accuracy, reliability, easiness in implementation and the like, and has important significance in guiding cable repair work.

Description

technical field [0001] The invention belongs to the technical field of high-voltage cables, and relates to a high-voltage cable repair device, in particular to a cable buffer layer repair effect measurement device based on capacitive current analysis. Background technique [0002] With the rapid development of urbanization in my country, the proportion of electricity consumption in cities is increasing, accounting for more than 80% of the total electricity consumption in the country. The ever-increasing demand for electricity and the increasingly tight urban land use make more and more electricity transmission methods adopt underground cable transmission, and its proportion can reach more than 70%. [0003] Cross-linked polyethylene (XLPE) cables have become the mainstream choice for land-based urban power transmission projects due to their excellent electrical properties, heat resistance, and ease of installation. At present, almost all of the newly built urban high-voltage...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, propose a cable buffer layer repair effect measurement device based on capacitive current analysis, and solve the current problem that the repair effect of the electrical performance defect of the high-voltage XLPE cable buffer layer cannot be effectively evaluated

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