Power storage battery online capacity checking protection system and control method thereof

Abstract

The invention discloses a power storage battery online capacity checking protection system and a control method thereof. The system comprises a storage battery pack, a direct-current power supply, a controllable switch module, a pre-charging delay module and a protection control module, the storage battery pack is connected with the direct-current power supply in parallel through the controllable switch module and connected to a load module through the controllable switch module, the pre-charging delay module is connected between the positive electrode end of the storage battery pack and the positive electrode end of the direct-current power supply, and the protection control module is used for pre-charging the storage battery pack by controlling the pre-charging delay module after delaying for a first preset time when online capacity checking is completed; and after a second preset time is delayed, the pre-charging delay module is controlled to stop working, and the controllable switch module is controlled to enable the direct-current power supply to charge the storage battery pack. Therefore, after online capacity checking of the storage battery pack is completed, pre-charging delay control is added, and the instantaneous large current and surge phenomena are effectively avoided.

Description

technical field [0001] The present invention relates to the technical field of electric storage batteries, in particular to an online nuclear capacity protection system for electric storage batteries, a control method thereof, and a computer-readable storage medium. Background technique [0002] The DC power supply of the substation is an important part of the substation, and it is the basis for the normal operation and operation of equipment such as relay protection, safety automatic devices, automation, communication and circuit breakers. As an important backup power source for substations, batteries are the guarantee for uninterrupted power supply and play an important role in the safe and stable operation of the power grid. [0003] According to the requirements of the relevant operation and maintenance regulations for power batteries: newly installed batteries need to undergo an offline nuclear capacity test every year, and after 6 years of operation, an offline nuclear...

AI Technical Summary

Problems solved by technology

The traditional battery maintenance is passive at intervals, requiring professional maintenance personnel to bring instruments and equipment to the site for off-line nuclear capacity testing. After the nuclear capacity is completed, the battery needs to be manually charged, and then the battery is incorporated into the DC system after it is fully charged. The operation and maintenance workload is heavy, the labor efficiency is low, and there are potential safety hazards

[0004] With the development of intelligent power system, some power batteries have achieved online nuclear capacity testing, but after the control of battery nuclear capacity, there will be phenomena such as instantaneous high current and surge of batteries, which will cause instantaneous shutdown of substation equipment and limit automatic online testing. Large-scale use of nuclear capacity devices

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