A line short circuit and short circuit position detection device

By designing a line short circuit and short circuit position detection device including a constant voltage and constant current source, a current sampling circuit, a constant voltage and constant current switching circuit, a voltage sampling circuit and a processor, the problems of circuit short circuit fault detection and position determination are solved, and efficient and accurate fault diagnosis is achieved.

CN111308274BActive Publication Date: 2025-03-25GUIZHOU QISHENG GENERAL AVIATION CO LTD
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Patent Information

Application Number
CN202010185039.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-03-17
Publication Date
2025-03-25
Estimated Expiration
2040-03-17

AI Technical Summary

Technical Problem

How to detect whether there is a short circuit fault in the circuit and determine the location of the short circuit fault.

Method used

Design a line short circuit and short circuit position detection device, including a constant voltage and constant current source, a current sampling circuit, a constant voltage and constant current switching circuit, a voltage sampling circuit and a processor. The constant voltage constant current switching circuit switches between the constant voltage mode and the constant current mode, and combines current and voltage acquisition data to calculate the wire short circuit distance to determine the short circuit position.

Benefits of technology

The detection of line short circuit faults and the accurate determination of short circuit positions are realized, and the efficiency and accuracy of circuit fault diagnosis are improved.

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Abstract

The present invention relates to a line short circuit and short circuit position detection device, comprising a constant voltage and constant current source, a current sampling circuit, a constant voltage and constant current switching circuit, a voltage sampling circuit and a processor; the output end of the constant voltage and constant current source is electrically connected to the input end of the current sampling circuit, the sampling end of the current sampling circuit is electrically connected to the circuit to be tested, the output end of the current sampling circuit is electrically connected to the input end of the constant voltage and constant current switching circuit, the output end of the constant voltage and constant current switching circuit is electrically connected to the controlled end of the constant voltage and constant current source; the sampling end of the voltage sampling circuit is electrically connected to the circuit to be tested, and the output end of the current sampling circuit and the output end of the voltage sampling circuit are both electrically connected to the processor. The present invention calculates the short circuit distance of the wire according to the collected voltage and current data and in combination with the cross-sectional area and resistivity parameters of the wire.
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