Measurement device of leaked current at high-voltage end of insulator

Abstract

The invention discloses a measurement device of the leaked current at a high-voltage end of an insulator. The measurement device comprises a metal casing and a fiber optic signal transmission device, wherein the fiber optic signal transmission device comprises a signal transmitting end and a signal receiving end; a leaked current sensor and the signal transmitting end are arranged on a supporting baffle; the metal casing is provided with a first fitting connected with the insulator, and a second fitting connected with a high-voltage wire; the second fitting is connected with the leaked current sensor through electrical signals; a data acquisition card collects the electrical signals output by the leaked current sensor; the electrical signals are converted into digital signals through an analog-digital converter and are output to the signal transmitting end; the signal transmitting end converts the digital signals into optical signals and transmits the optical signals to the signal receiving end through a monomode optical fiber; the signal receiving end converts the optical signals into electrical signals through a photovoltaic conversion module and transmits the electrical signals to a monitoring terminal. The device transmits signals through the fiber optic signal transmission device, is low in transmission loss and long in distance, has high anti-electromagnetic interference property and insulating property, and guarantees the signal transmission precision and safety.

Description

technical field [0001] The invention relates to a leakage current measuring device at a high-voltage end of an insulator, and belongs to the technical field of electric power detection equipment. Background technique [0002] Leakage current is closely related to the development process of pollution flashover. It can comprehensively reflect the whole process of operating insulators from pollution, moisture to flashover. Leakage current is an important parameter to describe the characteristics of insulator pollution flashover. [0003] At present, the sensors for obtaining leakage current are all installed on the low-voltage side, that is, between the ground terminal of the insulator and the ground. Halo, so that the current input into the insulator and the output current after passing through the insulator are not the same, resulting in inaccurate measurement results. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies i...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a leakage current measuring device at the high voltage end of the insulator, which can measure the leakage current at the high voltage end of the insulator, and solve the technical problem of inaccurate measurement of the insulator leakage current at the high voltage end in the prior art

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