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Online active inverter discharging system for transformer substation storage battery

A battery and substation technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as potential safety hazards, and achieve the effects of improving work efficiency, reducing labor intensity, and simplifying the DC system.

Active Publication Date: 2014-07-23
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case where there is only one set of battery packs in the station, during the discharge of the nuclear capacity, once there is a failure such as mains power interruption, the battery packs cannot provide backup power for the DC bus in time, which will bring potential safety hazards

Method used

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  • Online active inverter discharging system for transformer substation storage battery

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Embodiment Construction

[0031] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, an online active inverter discharge system for substation batteries, including: AC busbar 1, AC busbar 1 connected to two mains; active inverter circuit connected to AC busbar 1, charging circuit ; a discharge control circuit connected to the charging circuit; a substation storage battery 5 connected to the active inverter circuit, the charging circuit and the discharge control circuit respectively.

[0033] Such as figure 1 As shown, the active inverter circuit includes: an active inverter 21, the DC input positive terminal of the active inverter 21 is connected to the battery 5 of the substation through a DC contactor 22 (model: BCZ4-200-0111) positive pole; the DC input negative terminal of the active inverter 21 is connected to the negative pole of the substation battery 5;...

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Abstract

The invention discloses an online active inverter discharging system for a transformer substation storage battery. The online active inverter discharging system comprises an alternating current busbar, an active inverter circuit, a charging circuit, a discharging control circuit and the transformer substation storage battery. The active inverter circuit and the charging circuit are connected with the alternating current busbar. The discharging control circuit is connected with the charging circuit. The transformer substation storage battery is respectively connected with the active inverter circuit, the charging circuit and the discharging control circuit. According to the online active inverter discharging system, the discharging process is safe and friendly to the environment, energy is saved in the discharging process, the storage battery does not need to disengage from a bus in the discharging process, the direct current discharged by the storage battery is inverted into an alternating current feedback power grid with the same frequency and the same phase with the electric supply, discharging is immediately stopped when electric supply failure or charging device fault and other abnormal situations in the discharging process of the storage battery happen, and the bus is supplied with the electricity.

Description

technical field [0001] The invention relates to an inverter power supply circuit, in particular to an on-line active inverter discharge system for storage batteries in substations. Background technique [0002] At present, the power industry generally adopts "load-type" discharge technology to carry out battery check discharge tests to find out the problems existing in battery packs and single cells. In the process of practice, it is found that this method has disadvantages such as complex operation, heavy workload, and potential safety hazards such as heating. [0003] However, no matter whether electric heating device or active inverter discharge device is used for battery I 10 For the discharge test, the battery pack must be separated from the DC bus and replaced by a spare battery pack. In the case of only one set of battery packs in the station, during the discharge of the nuclear capacity, once a failure such as mains interruption occurs, the battery packs cannot pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 王勤江福官朱旻捷盛守贫冯杰陶导吉英宏
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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