Photoelectric module reverse testing method and photoelectric module fault diagnosis and discrimination method

Abstract

The invention discloses a photoelectric module reverse testing method and a photoelectric module fault diagnosis and discrimination method. The photoelectric module fault diagnosis and discriminationmethod comprises the steps of appearance inspection, basic photoelectric inspection and fault recurrence inspection, and as for a fault recurrence module, system testing, loss calculation and fault positioning analysis continue to be conducted; and as for fault non-recurrence module, temperature and humidity environment simulation test detecting is adopted, if a fault recurs, the system testing step is conducted, if the fault fails to recur, Allan variance calculation, detector return and phase modulation signal detection continue to be conducted, set threshold conditions are compared throughthe calculation results for performance evaluation, the module with poor performance serves as a test material, and the module with the good performance serves as a spare part. The photoelectric module fault diagnosis and discrimination method has the characteristic that fault diagnosis and discrimination are comprehensive, accurate and reliable.

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...

AI Technical Summary

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.

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