Test platform and test method for flexible direct-current transmission power supply module

Abstract

The invention discloses a test platform and a test method for a flexible direct-current transmission power supply module. The test platform comprises an HMI touch screen. The HMI touch screen is connected with the PLC main controller; a digital quantity input interface and a digital quantity output interface of the power distribution and control unit are connected with a digital quantity output interface and a digital quantity input interface of the PLC main controller; a high-voltage input interface of the power distribution and control unit is connected with a high-voltage output interface of the program-controlled high-voltage source; a high-voltage output interface of the power distribution and control unit is connected with a high-voltage input interface of the to-be-tested module; ahigh-voltage input interface of the voltage transmitter is connected with a direct-current side high-voltage output interface of the to-be-tested module; an analog quantity output interface of the voltage transmitter is connected with an analog quantity input interface of the PLC main controller; a slave station interface of the FPGA core board is connected with a master station interface of the PLC master controller, an AC sampling input interface of the FPGA core board is connected with an AC output interface of a module to be tested, and a high voltage control interface of the program control high voltage source is connected with an output interface of the PLC master controller. The invention discloses a working method of the test platform.

Description

Technical field [0001] The invention relates to the technical field of flexible DC transmission power module testing, and specifically to a test platform and test method for half-bridge and full-bridge power modules suitable for the field of flexible DC transmission and distribution. Background technique [0002] MMC (modular multilevel converter, MMC) is the core equipment in the flexible DC transmission system responsible for converting electric energy between AC and DC. As the smallest basic unit of the converter valve, the power module has a large response to temperature, voltage, current and its change rate. It is very sensitive. In order to ensure the reliable operation of the flexible DC transmission project, a series of tests must be carried out to check whether the safety and reliability of the power module is qualified during the module testing stage in the factory, the on-site installation stage of the converter station and the maintenance stage of the converter st...

AI Technical Summary

Problems solved by technology

[0005] The function of the operation panel is single, the test voltage level is low, the test results are only displayed by the panel indicator light or the oscilloscope is manually adjusted to capture the waveform, the operation interface is not friendly, the efficiency is low, it is not conducive to problem finding and repair, and there is no single test and whole process. There are two optional functions for machine testing, the test results cannot be stored and traced, and the test process is not conducive to process quality control

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