Transformer substation direct-current battery device and transformer substation direct-current battery system

Abstract

The invention provides a transformer substation direct-current battery device and a transformer substation direct-current battery system. The transformer substation direct-current battery device comprises a battery management system, a battery pack and a main control box, wherein the battery management system is connected with the main control box through the battery pack, and the main control boxis connected with the direct-current power supply unit through a direct-current bus; the main control box is used for controlling disconnection or connection of the direct-current bus, when the direct-current bus is closed, the main control box is connected with the direct-current power supply unit, and the direct-current power supply unit charges the battery pack; when the direct-current bus isdisconnected, the main control box is disconnected with the direct-current power supply unit, and the direct-current power supply unit stops charging the battery pack; the battery management system isused for collecting relevant parameters of the battery pack, judging the operation state of the battery pack according to the relevant parameters and sending a control signal to the main control boxaccording to the operation state so as to indicate the main control box to control disconnection or connection of the direct-current bus. The transformer substation direct-current battery device can monitor the running state of the battery pack in real time, and safe charging and discharging can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of direct current batteries, in particular to a substation direct current battery device and a substation direct current battery system. Background technique [0002] The power system of the substation has an independent DC power system, which is usually in a standby state. When the AC power fails and loses power, the DC battery system quickly supplies power to the accidental load, and at the same time supplies power to loads such as automatic control devices, protection devices, signals, and communications during power outages. It can be seen that the reliability of the DC battery system is crucial to the safe operation of the substation, and a safe and reliable battery system is an important guarantee for the safe and reliable operation of the substation. [0003] The valve-regulated lead-acid battery system is a battery system widely used in the DC battery system of the grid substation at present, mainly ...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a substation DC battery device and a substation DC battery system to overcome the problems of poor temperature characteristics, poor overrun performance and poor system stability of the valve-regulated lead-acid battery system in the prior art.

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