热力发电2025，Vol.54Issue(2)：9-20,12.DOI:10.19666/j.rlfd.202406150
基于超临界二氧化碳循环的"光火储"一体化发电系统调峰性能研究
Peak regulation performance of"photothermal storage"integrated power generation system based on supercritical carbon dioxide cycle
田松峰 1徐琛 1张倩 1姚静 1刘旭 1翟启超1
作者信息
- 1. 华北电力大学动力工程系,河北 保定 071003||河北省低碳高效发电技术重点实验室,河北 保定 071003
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摘要
Abstract
In order to build a large capacity flexible power supply and solve the dilemma of balancing winter peak shaving and heating for coal-fired units,six new"solar thermal storage"integrated power generation systems are proposed based on conventional thermal power plants(CFPP),utilizing solar energy and molten salt thermal storage to balance winter heating.The system is modeled using EBSLION software,and a comparative analysis is conducted on thermal performance and peak shaving performance of each scheme from the perspectives of thermal storage load and electricity load.The use of a"steam extraction+electric heating"thermal storage scheme significantly improves the peak shaving capability of thermal power units.Among the various schemes,Scheme W1 exhibits the maximum peak shaving depth of 92.71%,Scheme W6 shows a minimum comprehensive coal consumption of only 178.15 g/(kW·h),with a daily saving of 182 tons of standard coal.In addition,Scheme W2 achieves the highest cycle thermal efficiency of 55.2%.The use of the"light coal"storage scheme fully enhances the backup capacity of the supercritical carbon dioxide(S-CO2)system,and the"extraction steam storage heat"drives the"small turbine"to assist the S-CO2 system in heating,achieving the dual goal of peak shaving heating in winter.This type of system not only expands the peak shaving capacity of coal-fired units,ensuring heating for people's livelihoods,but also fully utilizes solar energy resources,reduces coal consumption per kilowatt hour,and enhances the reserve capacity and power generation hours of S-CO2 systems,providing theoretical and engineering guidance for the construction of high-capacity flexible regulation power sources.关键词
光煤互补发电/熔盐储热/调峰深度/调峰容量/系统效率Key words
solar hybrid coal-fired power generation/molten salt thermal storage/peak shaving depth/peak shaving capacity/system efficiency引用本文复制引用
田松峰,徐琛,张倩,姚静,刘旭,翟启超..基于超临界二氧化碳循环的"光火储"一体化发电系统调峰性能研究[J].热力发电,2025,54(2):9-20,12.
