Cable fault point positioning device and data processing method thereof

A technology for cable fault and point location, which is applied in the fault location, measuring device, fault detection according to conductor type, etc., can solve the problems of slow rise of the rising edge of the reflected wave, decrease of slope, large distance measurement error, etc., to save space and voltage The effect of low and high safety factor

Active Publication Date: 2017-12-26
STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH +1
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Problems solved by technology

If the collected signal contains a large number of noise signals, and the rising edge of the reflected wave rises slowly, and its slope is much lower than that of the incident wave, then using the slope method to determine the starting point of the transmitted wave may cause a large ranging error

Method used

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  • Cable fault point positioning device and data processing method thereof
  • Cable fault point positioning device and data processing method thereof
  • Cable fault point positioning device and data processing method thereof

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Embodiment Construction

[0038] A cable fault point locating device, comprising a steep wave pulse sending / receiving module 1, the steep wave pulse sending / receiving module is connected to a test clamp 3 connected to one end of a faulty cable through a clamp plug 2, and the steep wave pulse sending / receiving module The module transmits pulses to the faulty cable; the steep wave pulse sending / receiving module is connected to the CPU 5 through the AD conversion module 4; the steep wave pulse sending / receiving module communicates with the damping module 6, and the damping module eliminates the cable after the first pulse reflection wave is recorded. The pulse energy reflected multiple times inside, the power supply module 7 provides power for the device.

[0039] The power supply is a rechargeable lithium battery.

[0040] The rechargeable lithium battery is connected with the solar panel 8 .

[0041] The CP is connected with a keyboard.

[0042] The CP is connected with a liquid crystal display.

[0...

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Abstract

The invention discloses a cable fault point positioning device and a data processing method thereof. The cable fault point positioning device includes a steep wave pulse transmitting/ receiving module, and the steep wave pulse transmitting/ receiving module is connected with a test cable clamp, connected with one end of a faulted cable, through a cable clamp plug; the steep wave pulse transmitting/ receiving module sends pulses to the faulted cable, and is connected with a CUP through an AD conversion module; the steep wave pulse transmitting/ receiving module is communicated with a damping module, and the damping module eliminates multiple-reflected pulse energy inside the cable after a first pulse reflection wave is recorded; a power supply module provides power for the device. The cable fault point positioning device and the data processing method thereof can determine the fault type and fault position of the cable, and the working performance is excellent.

Description

technical field [0001] The invention relates to a cable fault point location device and a data processing method thereof. Background technique [0002] There are currently two main methods for processing the waveform data of the reflected wave of the faulty cable: [0003] (1) Autocorrelation algorithm [0004] The similarity between the two signals is called the autocorrelation function, and the starting moment of the waveform is determined by solving the extreme point of the autocorrelation function. In the case of a non-destructive line, there is a high similarity between the transmitted wave and the reflected wave. However, the actual line will have impedance. When the length of the cable is long and the loss of the reflected wave is large, the waveform distortion is very serious, resulting in a large error. [0005] (2) Slope method [0006] The main principle is to calculate the slope value of each point of the collected signal. It is considered that the point with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/083G01R31/088Y04S10/52
Inventor 秦勇林亚阳胡新雨吴建峰秦钰涵秦玲施永东周燠李捷
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH
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