Transformer substation direct-current system storage battery performance online test method and device

Abstract

The invention discloses a transformer substation direct current system storage battery performance on-line test method and device. The on-line test device comprises a silicon stack D1, a direct current contactor K1, a first voltage sensor TV1, a second voltage sensor TV2, a current sensor TA1, wiring terminals CD+, M+ and M-, and a CPU. According to the method, a direct-current output voltage of abus on a charger is properly reduced, and a rapid discharge test is performed on a storage battery pack by using a field load so as to rapidly verify the performance of the storage battery pack and evaluate the state of the storage battery. According to the invention, manual or automatic regular starting of the device can be realized to rapidly and conveniently check the performance of a storagebattery and find the conditions of single battery open circuit, battery pack switch fault or disconnection, battery pack fuse fusing, connecting wire falling, cross-layer wire breaking, screw loosening and the like in time, so that online detection of the performance of the storage battery can be achieved, and the defect of the empty window period of a check discharge test is effectively overcome.

Description

technical field [0001] The invention relates to an on-line testing method and device for battery performance of a substation DC system, belonging to the technical field of substations. Background technique [0002] The DC power supply system is the basic power supply of the substation. It is an indispensable system and equipment to ensure the protection device, automatic equipment action, switch trip, prevent accident expansion and restore the normal operation of the system. Its safe and stable operation is to ensure the safe and stable operation of the power system. key. As the core equipment of direct current, the battery, once there is a problem, the protection will fail, the switch will refuse to operate, the channel will be interrupted... the consequences will be unimaginable. [0003] At present, for the performance test of electric battery packs, the main methods are online voltage detection and regular check discharge test. The voltage test can only reflect the volt...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose an online test method and device for the battery performance of the substation DC system in order to ensure the safe and stable operation of the power system in view of the fact that the existing technology cannot respond to changes in battery performance in real time

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