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Hybrid energy storage energy management method and system for primary frequency modulation

A hybrid energy storage and energy management technology, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problem of no one-time frequency modulation energy management method, and achieve the effect of improving life expectancy, improving scoring coefficient, and improving economic benefits

Active Publication Date: 2022-03-08
HUANENG CLEAN ENERGY RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no primary frequency modulation energy management method applied to this type of hybrid energy storage

Method used

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  • Hybrid energy storage energy management method and system for primary frequency modulation
  • Hybrid energy storage energy management method and system for primary frequency modulation
  • Hybrid energy storage energy management method and system for primary frequency modulation

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Embodiment Construction

[0052] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0053] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may als...

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Abstract

The invention discloses a hybrid energy storage energy management method and system for primary frequency modulation, and the method comprises the following steps: adjusting a droop curve dead zone, a slope and an extreme value according to the current application scenes and charge states of flywheel energy storage and electrochemical energy storage, and carrying out the setting of primary frequency modulation droop curve parameters of the flywheel energy storage and the electrochemical energy storage; a double-droop curve is obtained; performing reference power checking on the reference power of flywheel energy storage and the reference power of electrochemical energy storage to obtain a checked power reference value; and transmitting the checked power reference value to the hybrid energy storage system for controlling the actual output power. According to the method, respective advantages of flywheel energy storage and electrochemical energy storage can be fully exerted, respective disadvantages are avoided, the energy storage system operates in an efficient state, and the service life of the energy storage system is prolonged.

Description

technical field [0001] The invention relates to the field of hybrid energy storage management, in particular to an energy management method and system for hybrid energy storage used in primary frequency regulation. Background technique [0002] At present, with the increasing power consumption in the society, the scale of the power grid is gradually expanding, and the demand for frequency regulation of the power grid is also increasing. As a two-way energy component, the energy storage system is the main supply force for high-quality frequency modulation demand. At present, electrochemical energy storage is mainly used as the energy storage component for the primary frequency regulation of the power grid. However, when the battery is actually used in frequency regulation, there are problems such as low capacity utilization, frequent charging and discharging, resulting in SOC measurement errors, and unsatisfactory response speed. [0003] The use of power-type high-speed ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/30H02J3/32H02J3/46
CPCH02J3/241H02J3/30H02J3/32H02J3/466H02J2203/10Y02E60/16
Inventor 李铮郭小江汤海雁杨萍申旭辉孙栩赵瑞斌付明志潘霄峰秦猛李春华王鸿策关何格格
Owner HUANENG CLEAN ENERGY RES INST
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