Qinghan Sun , Runhang Teng , Hang Li , Yonglin Xin , Huan Ma , Tian Zhao , Qun Chen
{"title":"用于综合电力和供热系统动态模拟和综合调节的广义频域分析","authors":"Qinghan Sun , Runhang Teng , Hang Li , Yonglin Xin , Huan Ma , Tian Zhao , Qun Chen","doi":"10.1016/j.apenergy.2024.123817","DOIUrl":null,"url":null,"abstract":"<div><p>Comprehensive dispatch of integrated electric and heating systems (IEHS) has shown great potential in promoting energy utilization efficiency, where an effective modelling of district heating system (DHS) is crucial. Herein, a new frequency-domain-based model is proposed to reflect full heat transport dynamics in DHS considering variation of both temperatures and fluid flow rates. Numerical tests on a highly branched DHS demonstrate the high accuracy of the proposed model under various flow conditions. The proposed model has a general error less than 1K and outperforms the popular node method and finite difference method with less temporal sampling points. A primal-decomposition-based rolling-horizon approach is also proposed to optimize the IEHS in variable flow and variable temperature (VF-VT) mode using the new physical model. The results on a 45-node IEHS show the effectiveness of the proposed model and optimization approach, where the total operation cost is reduced by 3.4% compared with optimization without regulation of flow rates.</p></div>","PeriodicalId":246,"journal":{"name":"Applied Energy","volume":null,"pages":null},"PeriodicalIF":10.1000,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Generalized frequency-domain analysis for dynamic simulation and comprehensive regulation of integrated electric and heating system\",\"authors\":\"Qinghan Sun , Runhang Teng , Hang Li , Yonglin Xin , Huan Ma , Tian Zhao , Qun Chen\",\"doi\":\"10.1016/j.apenergy.2024.123817\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Comprehensive dispatch of integrated electric and heating systems (IEHS) has shown great potential in promoting energy utilization efficiency, where an effective modelling of district heating system (DHS) is crucial. Herein, a new frequency-domain-based model is proposed to reflect full heat transport dynamics in DHS considering variation of both temperatures and fluid flow rates. Numerical tests on a highly branched DHS demonstrate the high accuracy of the proposed model under various flow conditions. The proposed model has a general error less than 1K and outperforms the popular node method and finite difference method with less temporal sampling points. A primal-decomposition-based rolling-horizon approach is also proposed to optimize the IEHS in variable flow and variable temperature (VF-VT) mode using the new physical model. The results on a 45-node IEHS show the effectiveness of the proposed model and optimization approach, where the total operation cost is reduced by 3.4% compared with optimization without regulation of flow rates.</p></div>\",\"PeriodicalId\":246,\"journal\":{\"name\":\"Applied Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":10.1000,\"publicationDate\":\"2024-07-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0306261924012005\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306261924012005","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Generalized frequency-domain analysis for dynamic simulation and comprehensive regulation of integrated electric and heating system
Comprehensive dispatch of integrated electric and heating systems (IEHS) has shown great potential in promoting energy utilization efficiency, where an effective modelling of district heating system (DHS) is crucial. Herein, a new frequency-domain-based model is proposed to reflect full heat transport dynamics in DHS considering variation of both temperatures and fluid flow rates. Numerical tests on a highly branched DHS demonstrate the high accuracy of the proposed model under various flow conditions. The proposed model has a general error less than 1K and outperforms the popular node method and finite difference method with less temporal sampling points. A primal-decomposition-based rolling-horizon approach is also proposed to optimize the IEHS in variable flow and variable temperature (VF-VT) mode using the new physical model. The results on a 45-node IEHS show the effectiveness of the proposed model and optimization approach, where the total operation cost is reduced by 3.4% compared with optimization without regulation of flow rates.
期刊介绍:
Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.