中国电机工程学报2026，Vol.46Issue(6)：2258-2268,中插7,12.DOI:10.13334/j.0258-8013.pcsee.242911
煤电源储耦合调峰系统构建及性能评估
Construction and Performance Evaluation of Coal-fired Power Source-storage Coupled Peak Shaving System
摘要
Abstract
Coal-fired power plants can be coupled with the heat storage to further improve its flexible peak regulation capacity.In order to solve the problems of unclear technical path and vague performance evaluation index of the coupled coal-fired power and heat storage system,this study constructs a model of the source-storage coupling system for coal-fired power plants on the premise of ensuring the safe and efficient operation.EBSILON software is used to establish a simulation model of main steam condensation for heating molten salt(energy storage)and heating feedwater(energy release),and the influence mechanism of the energy storage and release process on the operation characteristics of the unit is revealed through thermodynamic analysis and system efficiency evaluation.The results show that the scheme exhibits favorable economic performance across different load ranges,and the comprehensive efficiency can reach up to 116%.In specific load ranges,the comprehensive efficiency can exceed 100%,which means the peak shaving of the coupling system is better than the unit itself.During the energy storage phase,the molten salt thermal storage system has little impact on the unit's efficiency;however,during the energy release phase,molten salt heating of the feedwater affects the unit's heat recovery system,leading to a decrease in system efficiency.By reasonably determining the proportion of molten salt heated feedwater,the efficiency loss caused by replacing part of the heat recovery can be reduced.The results prove that the coal-fired power source-storage coupled system proposed in this paper can effectively improve the economic performance of peak shaving operation of the coal-fired power plant,providing technical and data support for the engineering application of such systems.关键词
熔盐储热/煤电调峰/源储耦合/热力系统/系统性能Key words
molten salt thermal storage/coal-fired power peak shaving/source-storage coupling/thermal system/system performance分类
能源科技引用本文复制引用
俞李斌,李钦武,李文俊,王伊凡,赵中阳,郑成航,高翔..煤电源储耦合调峰系统构建及性能评估[J].中国电机工程学报,2026,46(6):2258-2268,中插7,12.基金项目
浙江省重点研发计划项目(2024SSYS0070,2023C03008). Key R&D Project of Zhejiang Province(2024SSYS0070,2023C03008). （2024SSYS0070,2023C03008）
