Flywheel energy storage and lithium battery composite energy storage system and working method thereof

A flywheel energy storage and energy storage system technology, which is applied in the field of flywheel energy storage and lithium battery composite energy storage system, can solve the problems of a single energy storage system, achieve high adjustment accuracy, stabilize the power grid, and avoid the effect of charging and discharging switching

Pending Publication Date: 2021-04-30
华能陇东能源有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above existing problems, the object of the present invention is to provide a flywheel energy storage and lithium battery composite energy storage system and its working method, which can give full play to the adv

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  • Flywheel energy storage and lithium battery composite energy storage system and working method thereof

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0032] like figure 1, the flywheel energy storage and lithium battery composite energy storage system of the present invention includes a DC-AC module 1, a joint energy storage management system 2, a DC-DC module 3, a lithium ion battery energy storage unit 4 and a flywheel energy storage unit 5; The lithium-ion battery energy storage unit 4 is composed of several lithium-ion battery cells connected in series or in parallel.

[0033] The lithium-ion battery energy storage unit 4 and the flywheel energy storage unit 5 are respectively connected to a DC-DC module 3, and all DC-DC modules 3 are connected in parallel to the joint energy storage management system 2, and the joint energy storage management system 2 and the DC-AC Module 1 is connected, and DC-AC modul...

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Abstract

The invention discloses a flywheel energy storage and lithium battery composite energy storage system and a working method thereof, and belongs to the technical field of energy storage. The system comprises a DC-AC module, a combined energy storage management system, DC-DC modules, a lithium ion battery energy storage unit and a flywheel energy storage unit. The lithium ion battery energy storage unit and the flywheel energy storage unit are respectively and correspondingly connected with DC-DC modules, all DC-DC modules are connected in parallel and then are connected with the combined energy storage management system, the combined energy storage management system is connected with the DC-AC module, and the DC-AC module is connected with an external power grid. Advantages of flywheel energy storage and the lithium battery can be brought into full play, parts borne by the flywheel energy storage and the lithium ion battery energy storage in different application scenes are optimized, performance advantages of the composite energy storage system are reasonably and efficiently matched and brought into full play, the peak and frequency modulation capacity of the energy storage system under complex conditions is greatly improved, and the defects of a single energy storage system are overcome.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and in particular relates to an energy storage system combined with a flywheel energy storage and a lithium battery and a working method thereof. Background technique [0002] In recent years, with the support of national policies and continuous technological progress, new energy sources such as wind power and photovoltaics have grown rapidly, and the installed capacity has far exceeded the local consumption capacity, resulting in more abandoned wind and light in some areas. Renewable energy sources such as photovoltaics are intermittent and volatile, resulting in a continuous decline in grid regulation and anti-interference capabilities, which poses a series of major challenges to the consumption of new energy on the grid and the stable operation of the grid. The use of energy storage devices can effectively manage the fluctuations and uncertainties associated with high proportions of win...

Claims

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Application Information

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IPC IPC(8): H02J15/00H02J3/30H02J3/32H02J3/24
CPCH02J3/30H02J3/32H02J15/00H02J3/241H02J15/007Y02E60/16
Inventor 徐若晨林勇吴有兵刘明义刘大为王建峰曹传钊陈国武曹曦朱勇朱连峻
Owner 华能陇东能源有限责任公司
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