Abstract
With the continuous increase of DC power system of substation, DC emergency power supply is needed for technical transformation and troubleshooting of DC power supply system. In order to study the ideal backup tool of DC power supply with light weight, small volume and easy to carry, and guarantee safety and stability of the renovation of substation dc system, this paper studies the ternary lithium ion battery with the advantages of large capacity and small volume. The paper intends to master the heating and cooling conditions of ternary lithium-ion batteries in charging and discharging process. Then, the feasibility application in substation emergency power supply of ternary lithium ion battery is analysed. The example results prove that the use of ternary lithium ion battery could meet the demand of using a variety of scenarios of transformer substation, and improve the reliability of dc power supply system.
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