摘要
综合能源系统[火用]流机理与分析方法的提出为能源品质分析提供了新思路。针对不同应用场景,如何系统性地求解[火用]流分布成为亟须解决的问题。基于网络化[火用]流机理,建立了两种适应于不同场景的综合能源系统[火用]流计算模型:一是建立关联矩阵,在已知非平衡节点功率的条件下,基于多能潮流提出间接计算方法;二是基于三相电力潮流、[火用]流与气压关系、[火用]流与水流-温度关系,建立电力、天然气、热力系统[火用]流计算模型以及能源站[火用]集线器模型,在已知非平衡节点[火用]的条件下,提出直接计算方法。最后,通过算例系统验证了两种计算模型的合理性与优越性,分析了算例系统的能源品质特征。
The proposal of exergy flow mechanism and analysis method of integrated energy systems provides a new idea for the energy quality analysis. For the different application scenarios, how to systematically solve the exergy flow distribution has become an urgent problem to be solved. Based on the mechanism of networked exergy flow, two exergy flow calculation models of integrated energy systems suitable for different scenarios are established. Firstly, the incidence matrix is established, and an indirect calculation method is proposed based on multi-energy power flow when the power of the unbalanced nodes is known.Secondly, based on the three-phase electric power flow, the relationship between exergy flow and gas pressure, and the relationship between exergy flow, water flow, and temperature, and the exergy flow calculation models of electricity, natural gas,and heat system are proposed. The exergy hub model of the energy station is also established. When the exergy of unbalanced nodes is known, the direct calculation method is proposed. Finally, the rationality and superiority of the two calculation models are verified by a test system, and the energy quality characteristics of the system are analyzed.
作者
李家熙
王丹
周天烁
贾宏杰
LI Jiaxi;WANG Dan;ZHOU Tianshuo;JIA Hongjie(Key Laboratory of the Ministry of Education on Smart Power Grids(Tianjin University),Tianjin 300072,China;Key Laboratory of Smart Energy&Information Technology of Tianjin Municipality(Tianjin University),Tianjin 300072,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2022年第24期45-56,共12页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51977141)
国家重点研发计划资助项目(2018YFB0905000)
国家电网公司总部科技项目(SGTJDK00DWJS1800232)。
