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Direct current power supply emergency system of transformer substation based on lithium iron battery

A technology of DC power supply and emergency system, applied in the direction of power network operating system integration, emergency power supply arrangement, information technology support system, etc. Social benefits, easy-to-operate effects

Active Publication Date: 2011-04-27
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Others are basically UPS, EPS power supply and lighting emergency power supply, which cannot be used as a DC power supply emergency system for power system substations

Method used

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  • Direct current power supply emergency system of transformer substation based on lithium iron battery
  • Direct current power supply emergency system of transformer substation based on lithium iron battery
  • Direct current power supply emergency system of transformer substation based on lithium iron battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] see figure 1 , consisting of the following portable split structural units, and the portable split structural units are connected by quick plugging;

[0026] Lithium iron battery unit: composed of lithium iron phosphate batteries;

[0027] Power distribution control switch unit: composed of 160A air switch K3 and 25A air switch K4, the two input ends of the air switch K3 are used to connect with the positive and negative output ends of the iron-lithium battery unit through quick plug-in cables, and the air switch The two input ends of K4 are respectively connected to the two output ends of the air switch K3, and the two output ends of the air switch K3 are used to output direct current through a quick plug-in cable;

[0028] Inverter unit: It is composed of an inverter. The two input ends of the inverter are respectively connected to the two output ends of the air switch K4 in the power distribution control switch unit through quick plug-in cables; the two output ends ...

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PUM

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Abstract

The invention discloses a direct current power supply emergency system of a transformer substation based on a lithium iron battery. The direct current power supply emergency system consists of portable split structure units which are connected in a fast-connection plugging mode. The portable split structure units comprise a lithium iron battery pack unit, a power distribution control switch unit,an inverter unit and a charging control unit, wherein the power distribution control switch unit comprises two air switches, the inverter unit comprises an inverter, and the charging control unit comprises an alternating current air switch, an air switch, a rectifier and a monitor device unit. The direct current power supply emergency system has small size of unit structures, is convenient for transformation and assembly in situ, greatly meets the emergency requirement of accident rescue of a power system and can be simultaneously used as a standby power supply for the field maintenance of the direct current power supply of the transformer substation.

Description

technical field [0001] The invention relates to an emergency system for a DC power supply used in a power system substation, specifically an emergency system for a DC power supply in a substation based on a lithium-ion ferrous phosphate battery pack, so as to meet the requirements of the substation for a DC power supply in the event of a major power grid accident or a major natural disaster. And the demand for power supply for inspection and testing instruments. Under normal circumstances, it is used as a temporary backup battery pack when a single battery pack is configured in a substation to meet the requirement that the battery pack needs to be separated from the DC bus for regular check discharge. Background technique [0002] The DC power supply for power system substation is the working power supply for protection, control and communication of power transmission and transformation equipment, and its battery pack is used for accidents such as substation protection, contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/00H02J9/04
CPCH02J9/062Y02B70/30Y04S20/20H02J9/06
Inventor 李晶曹永兴丁丹一
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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