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Switching device and method for realizing storage battery charging and discharging test

A switching device and discharge test technology, applied in the field of power grid substations, can solve problems such as loss of DC voltage loss

Pending Publication Date: 2021-03-19
ZHONGWEI POWER SUPPLY COMPANY OF STATE GRID NINGXIA ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a switching device and method for realizing battery charging and discharging tests, so as to solve the risk of DC voltage loss caused by the loss of battery power in the existing battery switching process

Method used

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  • Switching device and method for realizing storage battery charging and discharging test
  • Switching device and method for realizing storage battery charging and discharging test

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Embodiment Construction

[0020] The working battery pack is to ensure that the substation can work normally when the AC power is cut off, to avoid DC voltage loss in the substation due to the AC power outage, the relay protection device of the substation refuses to operate, and the motion system cannot realize the "four remotes" (telemetry, remote signaling, remote control, Remote adjustment), the dispatcher loses monitoring and control of the substation; therefore, during the charging and discharging test of the working battery pack, it is necessary to switch to the backup battery pack to supply power to the substation system. A switching device for implementing battery charge and discharge tests provided by this application is used to solve this problem.

[0021] The switching device for the battery charge and discharge test will be described in detail below.

[0022] The embodiment of this application provides a switching device for realizing battery charge and discharge test, please refer to figu...

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Abstract

The invention discloses a switching device and method for realizing a storage battery charging and discharging test. The device comprises a working storage battery pack and a standby storage battery pack; the working storage battery pack is connected to a main circuit through a first switch; the standby storage battery pack is connected to the main circuit through a second switch; the working storage battery pack is connected to a storage battery discharge test circuit through a third switch and is connected to a storage battery charge test circuit through a fourth switch; the third switch andthe fourth switch are both located on the side, close to the working storage battery pack, of the first switch. According to the structure, two groups of storage batteries can be connected in parallel for a short time in the storage battery switching process of a user, and the storage battery pack always supplies power to a direct-current bus, so that the direct-current voltage loss risk caused by loss of a storage battery power supply in the storage battery switching process is avoided, and the power failure probability in a transformer substation is reduced. The switching device for the storage battery charging and discharging test can reduce the risk of direct-current voltage loss, improve the switching speed of the storage battery and improve the working efficiency of the charging anddischarging test.

Description

technical field [0001] The application relates to the technical field of power grid substations, in particular to a switching device and method for realizing battery charging and discharging tests. Background technique [0002] The substation is the main intermediate link of power supply. Many control devices in the substation need DC power supply. For this reason, each substation is required to be equipped with batteries to ensure that the substation can still have the DC power provided by the battery when the mains power is cut off. So that the remote control system can continue to remotely monitor the substation. Especially at present, the unattended substation is already the main form in the power grid system. For this kind of substation, it is very important to ensure that its status is always in the remote monitoring of the control center. [0003] For substations, battery checking charge-discharge test is the only mandatory periodic inspection item for battery packs,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/382G01R31/396G01R1/04
CPCG01R1/0408G01R31/382G01R31/396
Inventor 李永增王明张学利王学俊张志刚唐红魏春侠赵朝常平刘昌辉刘博官学刚尤存苏国泷
Owner ZHONGWEI POWER SUPPLY COMPANY OF STATE GRID NINGXIA ELECTRIC POWER
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