电气技术2025，Vol.26Issue(9)：21-27,7.
高能量密度超级电容器单体设计与制备及其在火电调频中的应用
Design and preparation of high-performance supercapacitor units and their application in thermal power frequency regulation
党国举 1徐文浩 1兀鹏越 2郑昀 3邱逢涛4
作者信息
- 1. 南通江海储能技术有限公司,江苏 南通 226321
- 2. 西安热工研究院有限公司,西安 710001
- 3. 华能罗源发电有限责任公司,福州 350600
- 4. 华能武汉发电有限责任公司,武汉 430400
- 折叠
摘要
Abstract
In order to meet the flexibility transformation requirements of thermal power units under the"dual carbon"goal,this paper designs and develops a high-energy density lithium-ion supercapacitor monomer to address the bottleneck problems of insufficient frequency response rate of traditional lithium-ion batteries and limited energy density of supercapacitors.A supercapacitor unit with a rated capacity of 17 000 F,energy density of 90 W·h/kg,and power density of 10 kW/kg is developed by using a hybrid energy storage mechanism of hard carbon negative electrode/activated carbon positive electrode.According to QC/T 741-2014 standard testing,the monomer maintains a capacity retention rate of 83.2%in the temperature range of-20～55℃.After 50 000 cycles,the capacity decay rate is only 16.8%.After 1 000 hours of high-temperature aging,the capacity remains at 87.3%.When applied to a 5 MW supercapacitor+15 MW lithium-ion hybrid frequency regulation system,the frequency regulation performance index is improved by 60%compared to traditional coal-fired units,and the full life cycle cost is lower than that of pure lithium battery solutions.Research has shown that this high-energy-density supercapacitor unit effectively solves the prominent contradiction between high power demand and equipment lifespan in thermal power frequency regulation scenarios through its"second level response+ten thousand cycles"characteristics.关键词
锂离子超级电容器/火电调频/混合储能系统/能量密度/循环寿命/经济性分析Key words
lithium-ion supercapacitor/thermal power frequency regulation/hybrid energy storage system/energy density/cycle life/economic analysis引用本文复制引用
党国举,徐文浩,兀鹏越,郑昀,邱逢涛..高能量密度超级电容器单体设计与制备及其在火电调频中的应用[J].电气技术,2025,26(9):21-27,7.
