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Capacity allocation method, device and system for multi-type energy storage system

A multi-type energy storage and capacity allocation technology, applied in circuit devices, battery circuit devices, wind energy power generation, etc., can solve the problems of low computing efficiency, large computing resources, and low capacity allocation efficiency of multi-type energy storage systems. The effect of fast calculation speed, extended service life, and improved capacity utilization efficiency

Inactive Publication Date: 2018-12-14
GUANGZHOU POWER SUPPLY CO LTD
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Problems solved by technology

[0006] Based on this, it is necessary for the existing multi-type energy storage system capacity allocation method to calculate and occupy large resources, and the calculation efficiency is low, which leads to the technical problem of low capacity allocation efficiency of multi-type energy storage systems, and it is necessary to provide a multi-type energy storage system. Capacity configuration method, device and multi-type energy storage system

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  • Capacity allocation method, device and system for multi-type energy storage system
  • Capacity allocation method, device and system for multi-type energy storage system
  • Capacity allocation method, device and system for multi-type energy storage system

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[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] The capacity allocation method of multi-type energy storage systems provided by the present invention can be applied to such as figure 1 shown in the application environment. Among them, it includes wind farms, multi-type energy storage systems, bidirectional converters, step-up transformers and central controllers. The multi-type energy storage systems include supercapacitors and lithium-ion batteries. The converter and the step-up transformer are connected to the power grid; the central controller monitors the wind power of the wind farm in real time, comprehensively calculates the smooth...

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Abstract

The invention relates to a capacity allocation method, device and system of a multi-type energy storage system, wherein the method comprises the following steps: acquiring data of wind power output bya wind farm; performing layer-by-layer wavelet decomposition on wind power till the reconstruction of the low frequency part of the decomposed power sequence satisfies the FMT constraint, and takingthe current decomposition layer number as the optimal layer number; generating the configured power of the supercapacitor according to the high frequency portion of the first layer to the initial layer in the power sequence, and calculating the configured capacity of the supercapacitor; generating the configuration power of the lithium ion battery according to the high frequency part from the lower layer of the initial layer to the optimal layer in the power sequence, and calculating the configuration capacity of the lithium ion battery; and according to the configured power and capacity of the supercapacitor and lithium ion battery, configuring the capacity of the supercapacitor and lithium ion battery in the multi-type energy storage system. The method can effectively improve the capacity allocation efficiency of the multi-type energy storage system.

Description

technical field [0001] The invention relates to the technical field of wind storage power generation, in particular to a capacity configuration method and device for a multi-type energy storage system and a multi-type energy storage system. Background technique [0002] As a clean renewable energy, wind energy has developed by leaps and bounds in recent years. Due to the random fluctuation of wind speed, the output power is intermittent and uncertain, which will have a certain impact on the power grid, and the difficulty of connecting to the grid has become a bottleneck restricting the development of wind power. [0003] Because energy storage has the characteristics of dynamically absorbing and releasing energy, it has gradually received attention as an effective means to balance wind power fluctuations. Energy storage technologies commonly used in power systems mainly include sodium-sulfur batteries, flow batteries, ultracapacitors (Ultra Capacitor, UC) and superconductin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32H02J7/34
CPCH02J3/386H02J3/32H02J7/345Y02E10/76
Inventor 洪海生朱涛贺廷
Owner GUANGZHOU POWER SUPPLY CO LTD
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