Automatic capacity checking method and device of direct current system of transformer station

Abstract

The invention discloses an automatic capacity checking method and device of a direct current system of a transformer station. The method comprises steps that a processor module controls conduction ofa first switch module so as to allow a storage battery to be subjected to constant-current discharging; the processor module obtains the capacity of the storage battery according to acquired battery voltage change quantity and discharging duration of the storage battery; and the processor module controls disconnection of the first switch module and controls conduction of a second switch module soas to allow a rectifier in the direct-current system to carry out constant-current discharging on the storage battery. According to the invention, a technical problem is solved that the operation andmaintenance working efficiency of the direct current system of the transformer station and the storage battery group is low caused by the industry status that the periodical checking-type dischargingwork of the storage battery of the direct current system of the transformer station needs to be operated by professionals in the place.

Description

technical field [0001] The invention relates to the field of automation control, in particular to an automatic nuclear capacity method and device for a DC system of a substation. Background technique [0002] The DC system of the substation is an important part of the substation. The battery pack in the DC system of the substation can provide safe, stable and reliable power guarantee for the secondary system load in the power system, and ensure the normal operation of the control, protection and communication equipment of the substation. The stability of the battery pack and the actual capacity that can be provided to the load during the discharge process are of great significance to ensure the safe operation of power equipment. [0003] The battery packs in the existing DC system of the substation are connected to the rectifier and the load through the DC system bus, and the control switch is used to switch the line to complete the process of discharging and recharging the ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an automatic nuclear capacity method and device for the DC system of a substation, which is used to solve the problem of the DC system of the substation caused by the current situation in the industry that the periodic checking discharge work of the battery pack of the DC system of the substation must be operated by professionals on the spot. The technical problem of low efficiency in the operation and maintenance of battery packs

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