Automatic testing device for insulation performance of power transmission line

Abstract

The invention relates to an apparatus for automatically detecting insulating properties of an electric power transmission line. The apparatus is characterized by including an apparatus main body, a walking module, a measuring module, an outer expansion module, a secondary opening module, a power supply module, a control module and a wireless communication module. The control module, the power supply module, and the wireless communication module are mounted inside the apparatus main body. The power supply module and the other modules are connected so as to supply power to the other modules. The control module is connected to the walking module, the measuring module, the outer expansion module, the secondary opening module, and the wireless communication module so as to realize detection control function. According to the invention, the apparatus main body is moving on the electric power transmission line, and a temperature sensor and an electric field sensor are used individually for collecting temperature values and electric field intensity values at different positions of the electric power transmission line, and malfunction points are determined by the temperature values and the electric field intensity values in combination with a counter on a drive wheel. The apparatus of the invention guarantees timeliness of detection of the insulating properties of the electric power transmission line, effectively prevents unnecessary trouble brought by current method of artificial detection, and substantially increases detection efficiency.

Description

technical field [0001] The invention belongs to the technical field of electric power transmission line detection, and in particular relates to an automatic detection device for electric power transmission line insulation performance detection. Background technique [0002] As an important carrier of electric energy transmission, the power transmission line's insulation directly affects the reliability and efficiency of the electric energy transmitted. In medium and low voltage situations, the power transmission line includes the core wire and the insulating sheath of the power transmission line. Long-term use will lead to insulation aging of the line. The above situations will cause the decline of the insulation performance of the power transmission line, which will easily cause electric shock accidents and affect normal production and life. However, at present, in medium and low voltage applications, the devices for testing the insulation performance of power transmission...

AI Technical Summary

Problems solved by technology

In medium and low voltage situations, the power transmission line includes the core wire and the insulating sheath of the power transmission line. Long-term use will lead to insulation aging of the line. The above conditions will cause the insulation performance of the power transmission line to decline, which will easily cause electric shock accidents and affect normal production and life.

However, at present, in medium and low voltage applications, the devices for testing the insulation performance of power transmission lines are mainly handheld devices, which cannot be automated, making it difficult for power maintenance personnel to overhaul and easily lead to inaccurate test results.

In addition, most of the detection methods are to measure the current, insulation resistance and other parameters of the power transmission line through an external circuit, or directly detect the leakage of the power transmission line. These methods often require an external power supply, which increases the complexity of the device. In addition To a certain extent, it will only be discovered after the insulation is damaged, resulting in untimely detection and greatly reducing the practicability of the device

[0003] In terms of automatic detection of the insulation performance of power transmission lines, people continue to conduct research. The Chinese patent application number CN201410676458.9 discloses a power transmission line insulation detection device. The detection device uses an improved hand-cranked megohmmeter for insulation detection. , to avoid artificial manual detection, but this device needs to place the two lead-out wires of the equipment at both ends of the power transmission line under test, and check the core wires of the power transmission line one by one. The method needs to be connected normally at both ends of the core wire, which greatly reduces the accuracy and convenience of detection.

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