A kind of photoelectric module reverse test method and fault diagnosis and discrimination method

A technology of photoelectric modules and testing methods, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems affecting the performance improvement and improvement of all-fiber current transformers, and the inability to establish more accurate failure models of optoelectronic devices, etc., so as to improve the failure rate Efficiency in diagnosis, realization of recycling, and avoidance of material waste

Active Publication Date: 2021-06-11
BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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Problems solved by technology

At present, there is still a lack of systematic fault diagnosis and discrimination methods for optoelectronic modules, and it is impossible to establish a more accurate optoelectronic device failure model, which affects the performance improvement and promotion of all-fiber current transformers.

Method used

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  • A kind of photoelectric module reverse test method and fault diagnosis and discrimination method
  • A kind of photoelectric module reverse test method and fault diagnosis and discrimination method
  • A kind of photoelectric module reverse test method and fault diagnosis and discrimination method

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] A kind of photoelectric module fault diagnosis method of the present invention, such as figure 1 As shown, the details are as follows:

[0041] In this embodiment, the step of recording information is mainly to summarize and analyze the basic information of the suspected faulty photoelectric module, so as to facilitate subsequent fault diagnosis and discrimination.

[0042] After opening the shell of the suspected faulty photoelectric module, record the basic information of the module, including the module production number, optical path part number, circuit board number, and the number of the all-optical current transformer to which the module belongs, and the applied substation, etc.; record the fault of the module Alarm info...

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Abstract

The invention discloses a method for reverse testing of a photoelectric module and a method for diagnosing and judging faults. The specific steps of the method include: appearance inspection, basic photoelectric inspection, and fault recurrence inspection. For the fault recurrence module, continue to perform system testing, loss calculation and fault location analysis; If the fault recurs, go to the system test step. If it still fails to recur, continue to perform Allan variance calculation, detector return and phase modulation signal detection. Use the above calculation results to compare the set threshold conditions for performance evaluation. The performance is poor. The modules with better performance are used as test materials, and the modules with better performance are used as spare parts. The invention has the characteristics of comprehensive, accurate and reliable fault diagnosis and discrimination.

Description

technical field [0001] The invention relates to a photoelectric module reverse testing method and a fault diagnosis and discrimination method, belonging to the field of optical fiber current transformers. Background technique [0002] With the continuous development and advancement of digital substation smart grids, all-fiber current transformers are increasingly favored by smart grid construction due to their unique advantages that are different from traditional electromagnetic transformers. However, the main factors restricting the further large-scale application of all-fiber current transformers are their poor long-term operation stability and high failure rate. [0003] The all-fiber current transformer is mainly composed of a sensitive ring, a secondary collector and a polarization-maintaining optical cable connecting them. Among them, the optoelectronic module composed of optoelectronic components is the core component of the secondary collector, which is mainly respo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
Inventor 张志鑫靳俊杰王利清司磊
Owner BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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