A laser power supply circuit performance testing device, method and terminal equipment

Abstract

The embodiment of the present invention relates to a laser power supply circuit performance detection device, method, and terminal equipment, which are applied to a high-voltage direct current measurement system. The high-voltage direct current measurement system includes a resistance box, a remote module, and a merging unit connected to the remote module through an optical fiber. The performance testing device of the laser power supply circuit includes a laser attenuation modulator and a digital recording and analysis module connected to the laser attenuation modulator. Through the segmental testing of the working characteristics of the merging unit, optical fiber loop and remote module in the high-voltage DC measurement system, the obtained The sampling data of the subsection test is analyzed in the digital wave recording and analysis module, which can detect the performance of the laser power supply circuit of the high-voltage DC measurement system, detect the faulty unit or module and realize accurate fault location; solve the problem of existing high-voltage The DC measurement system only uses the driving current of the merging unit to judge whether a fault occurs, but cannot accurately diagnose the technical problem of the fault location.

Description

technical field [0001] The invention relates to the technical field of electric power measurement, in particular to a performance detection device, method and terminal equipment of a laser power supply circuit. Background technique [0002] At present, the high-voltage DC measurement system is mainly composed of a resistance box, a remote module, an optical fiber loop, and a merging unit. The merging unit mainly performs closed-loop adjustment control on the laser drive current and optical power in the merging unit based on the self-test information fed back by the remote module. The merging unit sends an alarm message or blocks the laser according to the set value of the driving current ladder. The high-voltage DC measurement system monitors the overall laser power supply performance of the driving circuit of the merging unit, the laser, the optical fiber circuit, and the laser power supply circuit of the remote module. However, the reason for the high driving current of th...

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Problems solved by technology

[0003] The embodiment of the present invention provides a laser power supply circuit performance detection device, method and terminal equipment, which are used for the technical problem that the existing high-voltage direct current measurement system only uses the driving current of the merging unit to judge whether a fault occurs, but cannot accurately diagnose the fault location

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