Open circuit protection mechanism applied to battery

An open-circuit protection and battery technology, applied in the field of power supply equipment and electrical maintenance, can solve problems such as safety accidents, DC power failure in substations, affecting the normal operation of variable power stations, etc., to facilitate repair and maintenance, and ensure the effect of operation

Pending Publication Date: 2019-12-13
STATE GRID CHONGQING ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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 f

Method used

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  • Open circuit protection mechanism applied to battery
  • Open circuit protection mechanism applied to battery
  • Open circuit protection mechanism applied to battery

Examples

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[0020] Examples:

[0021] Such as Figure 3-6 As shown, the present invention proposes an open circuit protection mechanism for a battery. The open circuit protection mechanism for a battery is connected to a power line, and a load 5 is also connected to the power line. The power line includes a positive line and Negative line, the open circuit protection mechanism for the battery includes a battery unit 1, a DC multi-circuit switching unit 2, a DC voltage stabilizing unit 3, and a DC charging unit 4. Among them, the DC charging unit 4 and the battery unit 1 are both connected to the transmission line and supply power to the load 5. When the DC charging unit 4 is working normally, it converts AC power to DC, and while supplying power to the load 5, the battery unit 1 For charging, when the AC power supply fails or the DC charging unit 4 fails, power is supplied to the load 5 through the battery pack. In this embodiment, the DC charging unit 4 is a DC charging screen commonly us...

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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...

Claims

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Application Information

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IPC IPC(8): H02J7/36
CPCH02J7/36
Inventor 段俊范禹邑胡丁文张西鹏付克勤陈齐覃玲周君杰谢光莉郑志远何俊宏谢露秦昕李航张媛媛
Owner STATE GRID CHONGQING ELECTRIC POWER
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