摘要
深度刻画中国能源系统各环节能量流动表征,对于实现中国能源系统“双碳”目标具有重要意义。该文类比经典的综合能源系统?流机理模型和熵增流机理模型,分别构建能源系统[火用]流传播模型和环节熵增分配模型,基于[火用]流-熵增视角,描绘中国能源系统[火用]流传播实例和环节熵增分配实例,绘制2020年中国能源系统[火用]流传播图与环节熵增分配图。研究中国能源系统在能量开发、传输、转换、利用等环节中的能量品质属性及能量退化现象,发现2020年中国能源系统熵增为0.39 EJ/K,[火用]效率为17.27%。中国能源系统的熵增较大,[火用]效率亟待提高,存在高?能量低质利用、低[火用]设备规模大等问题。最后,该文就推动中国能源系统量质协同发展提出相关建议。
In-depth characterization of energy flows across various stages of China’s energy system is of great importance for achieving the dual carbon goals.This paper draws on classic models of exergy flow mechanism and entropy generation mechanism in integrated energy systems.It develops an exergy flow propagation model and a segment entropy increase distribution model for energy systems.From an exergy flow-entropy increase perspective,examples of exergy flow propagation and segment entropy increase distribution in China’s energy system are illuatrated.And exergy flow and segment entropy increase distribution charts of China’s energy system in 2020 are produced.The analysis examines the energy quality characteristic and energy degradation phenomena within various stages of China’s energy system,including energy development,transmission,conversion,and utilization.The study reveals that the entropy increase for China’s energy system is 0.39 EJ/K,with corresponding exergy efficiency of 17.27%in 2020.The entropy increase within China’s energy system is relatively high,and exergy efficiency urgently needs improvement.Issues include the low-quality utilization of high-exergy energy and the large scale of low-exergy equipment.Finally,this paper provides recommendations to promote the coordinated development of energy quantity and quality in China’s energy system.
作者
王丹
程颢
王永真
贾宏杰
魏一鸣
李宜哲
韩特
WAND Dan;CHENG Hao;WANG Yongzhen;JIA Hongjie;WEI Yiming;LI Yizhe;HAN Te(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;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;School of Management and Economics,Beijing Institute of Technology,Beijing 100081,China)
出处
《新型电力系统》
2025年第2期184-199,共16页
NEW TYPE POWER SYSTEMS
基金
国家自然科学基金青年科学基金(52006114)。
关键词
中国能源系统
?流
熵增
能量品质
能量退化
China’s energy system
exergy flow
entropy increase
energy quality
energy degradation
