Open circuit protection mechanism applied to battery

Abstract

The invention provides an open circuit protection mechanism applied to a battery. The open circuit protection mechanism applied to the battery is connected with a power transmission line. The power transmission line is connected with a load. The power transmission line comprises a positive line and a negative line. The open circuit protection mechanism applied to the battery comprises a battery unit, a direct current multi-circuit switching unit and a direct current voltage stabilizing unit. According to the invention, the open circuit protection mechanism comprises multiple battery packs; multiple battery packs are connected with the transmission line through a multi-position selector switch; when an open-circuit fault occurs in one group of batteries, the multi-position selector switch is switched to the next gear, and another battery pack is connected to ensure continuous power supply to a load; continuous and reliable power supply of important power supplies such as a direct current power supply, a communication power supply, a UPS power supply in substations and power plants can be ensured; at the same time, correct operation of relay protection and automatic devices thereof in the event of an accident can be ensured; and normal and safe operation of the whole substation is ensured.

Description

technical field [0001] The invention relates to the technical field of electrical maintenance and power supply equipment, in particular to a device for open-circuit protection of a battery pack of a DC power supply in a substation. Background technique [0002] With the continuous improvement of the overall level of the power system, the new generation of smart substations has also put forward higher requirements for the DC power supply of the power system. The DC power supply system includes all protection devices, device power supplies for safety automatic devices, control circuit power supplies, and communication power supplies , UPS power supply and other necessary power supply equipment. When the AC power supply of the station transformer loses power or the charger fails, the battery pack reversely provides reliable power for the DC power system. If the battery pack is open, the DC power system of the whole station will lose all power, and all protection devices and saf...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides an open-circuit protection mechanism for storage batteries to solve the problem that the existing substation battery packs do not have open-circuit protection capabilities. When an open-circuit fault occurs, the substation will fail. The failure of the internal DC power supply and the shutdown of various safety protection and automation equipment will greatly affect the normal operation of the substation, which may cause major safety accidents and cause serious losses.

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