Lightweight integrated uninterrupted alternating and direct current power source and method

Abstract

The invention provides a lightweight integrated uninterrupted alternating and direct current power source and a method. The lightweight integrated uninterrupted alternating and direct current power source includes a 220V30AH lithium battery pack, a high-frequency switch rectifier module for power, a power UPS module, and a monitoring system; wherein the 220V30AH lithium battery pack is connected in parallel with the 220V direct current output of the high-frequency switch rectifier module for power, and can realize direct current 220V uninterrupted output; the high-frequency switch rectifier module for power charges the lithium battery pack using an external alternating current 220V power source as an input power source; the external alternating current 220V power source and the 220V30AH lithium battery pack are connected and input to the power UPS module, and the power UPS module realizes an alternating current 220V uninterrupted output; the monitoring system is connected to a batterymanagement system, the high-frequency switch rectifier module and the power UPS module separately; the battery management system is connected to the lithium battery pack; and the monitoring system realizes the monitoring of the working states of the lithium battery pack, the high-frequency switch rectifier module, and the power UPS module. The lightweight integrated uninterrupted alternating and direct current power source can realize uninterrupted alternating current output and direct current output at the same time, and has strong applicability.

Description

technical field [0001] The disclosure relates to the technical field of uninterruptible power supplies, in particular to a portable integrated uninterruptible AC and DC power supply. Background technique [0002] The battery operation regulations stipulate that if the battery pack of the substation has undergone three full-check discharge and charge tests, and the capacity of the battery pack does not reach more than 80℅ of its rated capacity, it should be replaced. It has been proved by practice that more than half of the cases in which the capacity of the battery is found to be less than 80% are found through full checking and charging of the battery packs that have been in operation for more than 6 years. 110kV voltage level substation battery packs are all single-group configurations. When performing full-core capacity discharge, lead-acid battery packs are used to form temporary backup battery packs. After connecting to the DC system, the battery packs are withdrawn for...

AI Technical Summary

Problems solved by technology

[0003] The inventor found in the research that when transforming the substation, it is necessary to set up a set of temporary AC and DC power supply systems for protection, monitoring, and signal systems. Usually, a battery panel, DC panel, AC panel, and UPS panel are required. Often due to site constraints, it is difficult to set up, time-consuming and laborious, and not standardized, and the safety is not high, so the site needs an integrated AC and DC power supply system that is small in size, light in weight, easy to transport and easy to install

Images