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Single port measurement calibration model based cable sweep frequency positioning analyzing system and method

A technology of single-port calibration and calibration model, applied in the fault location, detection of faults according to conductor types, etc., can solve the problems of time-consuming and labor-intensive human monitoring, and achieve the effect of ensuring safe and reliable operation, stability and safety.

Inactive Publication Date: 2017-02-15
康威通信技术股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Human monitoring is time-consuming and labor-intensive, so a monitoring method is needed to realize the pre-processing method of providing data such as the location of cable faults and cable damage

Method used

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  • Single port measurement calibration model based cable sweep frequency positioning analyzing system and method
  • Single port measurement calibration model based cable sweep frequency positioning analyzing system and method
  • Single port measurement calibration model based cable sweep frequency positioning analyzing system and method

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] A cable frequency sweep positioning analysis system based on a single-port measurement calibration model, including:

[0038] The signal transceiver unit includes a signal transmitter, a signal coupler and a signal receiver; the signal transmitter generates a signal of a certain frequency and sends it to the signal coupler, and the signal coupler acts on the transmitted signal to the cable under test attached to its end, and receives The reflected signal from the cable, the signal coupler is used to isolate the transmitted signal and the reflected signal; the signal receiver respectively receives the reflected signal output from the signal coupler and the transmitted signal output by the signal transmitter, and outputs the amplitude ratio of the two and Phase difference as measurement data;

[0039] The signal transmitter generates a signal with...

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Abstract

The invention relates to a single port measurement calibration model based cable sweep frequency positioning analyzing system and method wherein the system comprises a signal receiving and sending unit and a single port calibration model. The signal receiving and sending unit is provided with a signal emitter, a signal coupler and a signal receiver. The signal emitter generates a signal with certain frequency and sends it to the signal coupler. The signal coupler acts the emitted signal onto a to-be-detected cable hung at its end and receives the reflection signal from the cable. The signal coupler is used to separate the emitted signal and the reflection signal. The signal receiver is used to receive the reflection signal and the emitted signal and outputs the amplitude ratio of the two and their phase difference as measurement data. The single port calibration model is connected with the signal receiver. According to the application of the signal flow graph theory on the expression of the single port calibration model, the measurement data is analyzed; the position with damage or breakage is located; therefore, complete cable data analysis can be realized.

Description

technical field [0001] The invention relates to the field of power cable monitoring, in particular to a cable frequency scanning positioning analysis system and method based on a single-port measurement calibration model. Background technique [0002] Power cables are used for the transmission and distribution of electricity. With the development and progress of society, the proportion of cables used in the entire power transmission line is increasing. Compared with overhead lines, cables have high reliability and are not easily affected by the surrounding environment. The impact of the environment and pollution, the insulation distance between the lines is small, the land occupation is small, and there is no interference with radio waves, so it is widely used. When the cable is laid underground, it does not occupy the ground and space, it is safe and reliable, and it is not easy to expose the target. [0003] Since the vast majority of cables are laid underground, with the...

Claims

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/083
Inventor 孔得朋杨震威李长忠
Owner 康威通信技术股份有限公司
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