Intelligent high-voltage direct-current power distribution device

Abstract

The invention provides an intelligent high-voltage direct-current power distribution device, which comprises a high-voltage input circuit, a high-voltage output circuit, a power supply circuit and an intelligent controller, the high-voltage input circuit comprises an input contactor; the high-voltage output circuit comprises an output contactor and a pre-charging contactor; the intelligent controller controls the input contactor and the output contactor to be connected and collects current and voltage signals in the line, and when it is judged that the ratio of the actual current in the line to the maximum rated steady-state current exceeds a first preset threshold value, the input contactor and the output contactor are controlled to be disconnected; the intelligent controller controls the pre-charging contactor to be switched on and collects current and voltage signals of the high-voltage output circuit, and when it is judged that the ratio of the output end voltage to the input end voltage of the high-voltage output circuit exceeds a second preset threshold value, the output contactor is controlled to be switched on and the pre-charging contactor is switched off at the same time. According to the invention, a monitoring mechanism with two preset thresholds is introduced into the intelligent controller, the power distribution range is expanded on the premise of ensuring safety, and the power distribution efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of power distribution control, in particular to an intelligent high-voltage direct current power distribution device. Background technique [0002] At present, high-voltage power supplies are widely used in various aspects. Using high-voltage power supplies to power high-power equipment can greatly reduce the weight and cost of the system. [0003] However, although the current high-voltage power distribution equipment has an overcurrent and overvoltage protection mechanism, once the voltage or current in the line exceeds the maximum rated steady-state voltage or current, the power will be cut off, and the distribution range of voltage and current needs to be improved; In the charging circuit, the voltage of the back-end load needs to fully reach the power supply voltage of the previous stage before the pre-charging circuit is disconnected and the main circuit is turned on at the same time. The efficiency of...

AI Technical Summary

Problems solved by technology

[0003] However, although the current high-voltage power distribution equipment has an overcurrent and overvoltage protection mechanism, once the voltage or current in the line exceeds the maximum rated steady-state voltage or current, the power will be cut off, and the distribution range of voltage and current needs to be improved; In the charging circuit, the voltage of the back-end load needs to fully reach the power supply voltage of the previous stage before the pre-charging circuit is disconnected and the main circuit is turned on at the same time. The efficiency of power distribution needs to be improved.

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