Vibration test method and system for polarization-maintaining optical cable of optical fiber current transformer

By subjecting the polarization-maintaining optical cable of the optical fiber current transformer to heavy object drop, vibration table impact, and swept frequency vibration tests, its performance in a vibration environment is evaluated. This solves the problem of the lack of optical cable vibration tests in existing standards, and realizes the evaluation of the equipment's anti-vibration effect and reduces faults.

CN120740899APending Publication Date: 2025-10-03CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD
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Patent Information

Application Number
CN202510923711.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-04
Publication Date
2025-10-03

AI Technical Summary

Technical Problem

The existing standards lack vibration testing for polarization-maintaining cables of optical fiber current transformers, resulting in frequent equipment failures in vibration environments, affecting the stable operation of DC systems.

Method used

A vibration test method for a polarization-maintaining optical cable of an optical fiber current transformer is provided. The method includes a heavy object drop test, a vibration table impact vibration test, and a vibration table sweep frequency vibration test. The output signal of the optical fiber current sensor is obtained through different test schemes to judge the anti-vibration effect of the buffer material and protective measures.

Benefits of technology

The performance of the polarization-maintaining cable of the optical fiber current transformer under vibration was effectively evaluated, guiding the adoption of effective anti-vibration measures to reduce equipment failures and improve system stability.

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Abstract

The invention discloses a vibration test method and system for a polarization-maintaining optical cable of an optical fiber current transformer, and the method comprises the steps: laying the polarization-maintaining optical cable in an optical cable groove box, and enabling the polarization-maintaining optical cable to be connected with an optical fiber current sensor and an acquisition unit; injecting current into the optical fiber current sensor, and transmitting an output signal of the optical fiber current sensor to the acquisition unit through the polarization-maintaining optical cable; based on the heavy object falling test scheme, carrying out a heavy object falling test on the polarization-maintaining optical cable to obtain a heavy object falling output signal; based on the vibration table impact vibration test scheme, performing a vibration table impact vibration test on the polarization maintaining optical cable to obtain a vibration table impact vibration output signal; based on the vibration table sweep frequency vibration test scheme, performing a vibration table sweep frequency vibration test on the polarization maintaining optical cable to obtain a vibration table sweep frequency vibration output signal; and respectively determining anti-vibration effects of the test schemes, and guiding anti-vibration measures of the polarization maintaining optical cable based on the anti-vibration effects.
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