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华北电力大学电气与电子工程学院,北京市 102206
朱永强(1975—),男,通信作者,博士,副教授,主要研究方向:能源互联网、交直流微电网、新能源发电与并网技术。E-mail:zyq@ncepu.edu.cn
蔡钦钦(1996—),女,硕士研究生,主要研究方向:多能源系统能量流计算。E-mail:1641089229@qq.com
龚萍(1997—),女,硕士研究生,主要研究方向:综合能源系统规划、多能源网络评估。E-mail:m17710605275@163.com
收稿日期:2021-03-31,
修回日期:2021-05-13,
网络出版日期:2021-07-21,
纸质出版日期:2021-10-25
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朱永强,蔡钦钦,龚萍等.多能源网络稳态能量流分析与计算方法[J].电力系统自动化,2021,45(20):59-66.
ZHU Yongqiang,CAI Qinqin,GONG Ping,et al.Analysis and Calculation Method of Steady-state Energy Flow in Multi-energy Network[J].Automation of Electric Power Systems,2021,45(20):59-66.
朱永强,蔡钦钦,龚萍等.多能源网络稳态能量流分析与计算方法[J].电力系统自动化,2021,45(20):59-66. DOI: 10.7500/AEPS20210331004.
ZHU Yongqiang,CAI Qinqin,GONG Ping,et al.Analysis and Calculation Method of Steady-state Energy Flow in Multi-energy Network[J].Automation of Electric Power Systems,2021,45(20):59-66. DOI: 10.7500/AEPS20210331004.
适用于不同能源形式通用的数学描述和统一的能量流计算方法是多能源网络规划运行的理论基础。文中在构建多能源网络三维拓扑结构图的基础上,提出能量传递的统一描述,借用热力学中强度量和广延量的概念构建多能源网络中支路的能量传递方程。以最常见的圆柱形传递管道为例,推导交直流电能传递、不可压缩黏性流体、可压缩气体,以及热传导、流体传热的支路能量传递过程,并建立描述节点广延量守恒的网络方程。通过采用牛顿-拉夫逊法分别对独立能源子网和多能源网络的稳态能量流进行求解,算例验证了所提方法及模型的可行性。
A universal mathematical description and a unified energy flow calculation method suitable for different energy forms are the theoretical basis for the planning and operation of multi-energy networks. On the basis of constructing the three-dimensional topological diagram for the multi-energy network
this paper proposes a unified description for energy transfer
and constructs the energy transfer equations of branches in the multi-energy network by borrowing the concepts of intensity quantity and extensive quantity in thermodynamics. Taking the most common cylindrical transmission pipeline as an example
this paper derives the energy transfer processes of branches of the AC and DC power transmission
incompressible viscous fluid
compressible gas
heat conduction and fluid heat transfer
and then establishes a network equation describing extensive quantity conservation of nodes. The steady-state energy flows of the independent energy sub-networks and multi-energy network are solved by the Newton-Raphson method
and the calculation examples verify the feasibility of the proposed method and model.
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