Energy storage power station and capacity increasing method thereof

Abstract

The embodiment of the invention discloses an energy storage power station and a capacity increasing method thereof. The energy storage power station comprises a plurality of capacity fixing modules and at least one capacity increasing module connected in parallel with the capacity fixing modules. Each capacity increasing module includes a capacity increasing battery pack and a capacity increasing battery pack protection unit. Each capacity fixing module includes a capacity fixing battery pack and a capacity fixing battery pack protection unit. The rated working voltage U1 of each capacity increasing battery pack protection unit is equal to the rated working voltage U2 of each capacity fixing battery pack protection unit. The rated working current I1 of each capacity increasing battery pack protection unit is equal to U1/R1, wherein R1 is the resistance value of each capacity fixing battery pack. According to the technical scheme, by reasonably setting the rated working voltage and the rated working current of the capacity increasing battery pack protection units, the capacity of the energy storage power station can be increased, and the safety of the energy storage power station can be guaranteed. The energy storage power station capacity increasing scheme is feasible.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of energy storage, and in particular, to an energy storage power station and a capacity increasing method thereof. Background technique [0002] Energy storage is an important component and key supporting technology of smart grids, energy systems with a high proportion of renewable energy, and the Energy Internet. Electrochemical energy storage technologies represented by lithium batteries, lead-acid, and liquid flow continue to develop and mature. Electrochemical energy storage is the energy storage technology with the widest application range and the greatest development potential. At present, the development of global energy storage technology is mainly concentrated in the field of electrochemical energy storage. my country has completed the construction of several electrochemical energy storage power stations and put them into operation. [0003] During the operation of the electr...

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Problems solved by technology

[0005] In view of this, an embodiment of the present invention provides an energy storage power station and a method for increasing its capacity to solve the technical problem in the prior art that it is difficult to increase the capacity of the energy storage power station due to improper configuration of new and old batteries in the process of increasing the capacity of the energy storage power station

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