Hybrid energy storage system based on ordered energy control

A hybrid energy storage system and monitoring system technology, applied in the field of hybrid energy storage systems, can solve the problems of high price, low cycle times, and low specific energy, so as to improve operational flexibility and controllability, light weight, and occupy small area effect

Active Publication Date: 2013-05-22
STATE GRID CORP OF CHINA +1
View PDF4 Cites 39 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead-acid battery energy storage system has low mass-to-energy ratio and volumetric energy ratio and fewer cycles, and it is easy to cause certain pollution in the process of mass production or recycling; lithium-ion battery energy storage system has high raw material cost and production process Complexity makes it expensive. In addition, lithium-ion batteries have strict requirements on charge and discharge control and operating environment, and have exploded in the case of overcharge, overdischarge or overtemperature, posing safety hazards; supercapacitor battery energy storage systems Its discharge time is short and its specific ener

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid energy storage system based on ordered energy control
  • Hybrid energy storage system based on ordered energy control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] figure 1 Among them, the energy storage carrier part: lead-acid battery pack 1, lithium battery pack 2 and supercapacitor battery pack 3; among them, lead-acid battery pack 1 and lithium battery pack 2 are used as energy storage batteries, fully combining lead-acid batteries and lithium-ion batteries Advantages and disadvantages, to maximize strengths and avoid weaknesses, so that the two batteries can complement each other in terms of initial investment cost, capacity storage, floor area, service life, and recycling. As a power-type supercapacitor battery pack 3, it has the advantage of continuous high-pulse charge rate discharge of more than 10s, and forms complementary advantages with energy-type lead-acid battery pack 1 and lithium battery pack 2 in terms of energy and rate.

[0029] Two-way conversion control part: adopts unipolar design sc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a hybrid energy storage system comprising various energy storage carriers. The system is mainly based on an ordered energy control strategy, the energy storage carriers are selectively discharged in a current-limiting or power-limiting mode through a pulse width modulation (PWM) closed-loop control principle and a monitoring system selective control principle, the advantages of the energy storage carriers are combined and complemented, the disadvantages of the energy storage carriers are overcome, and the aim of ordered energy utilization of different energy storage carriers is fulfilled according to a discharge priority sequence, namely a third energy storage subsystem, a second energy storage subsystem and a first energy storage subsystem. By the hybrid energy storage system, the phenomenon that the power of a power grid fluctuates because a wind and light power generation system or a high-power load and the like are connected to the power grid is avoided, smoothing compensation is realized, the quality of electric energy is improved, and the stable operation of the power grid is ensured.

Description

technical field [0001] The invention relates to a power system energy storage system and method, in particular to a hybrid energy storage system based on energy orderly control. Background technique [0002] As the country continues to promote the development of smart grids, micro-grids, renewable energy and electric vehicles, energy storage technology, which is its key technical support, has also achieved rapid development. At present, the common forms of energy storage can be divided into four categories: electrochemical energy storage, physical energy storage, electromagnetic energy storage and phase change energy storage. Among them, energy storage methods such as physical energy storage, electromagnetic energy storage, and phase change energy storage cannot be developed and applied on a large scale due to limitations in technical level, geographical environment, operating conditions, and initial investment costs. However, with the continuous breakthrough of electrochem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02J3/28
Inventor 孙树敏陈嵩李广磊慕忠君程艳曹同利
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap