Optimal Operation of Electric Heating Network Based on Variable Energy Efficiency of Energy Hub

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Optimal Operation of Electric Heating Network Based on Variable Energy Efficiency of Energy Hub

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[1]LI Hongwei,JING Haojie,WU Lei,et al.Optimal Operation of Electric Heating Network Based on Variable Energy Efficiency of Energy Hub[J].Journal of Zhengzhou University (Engineering Science),2023,44(06):76-83.[doi:10.13705/j.issn.1671-6833.2023.04.015]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 44卷 Number of periods: 2023 06 Page number: 76-83 Column: Public date: 2023-12-25

Title:: Optimal Operation of Electric Heating Network Based on Variable Energy Efficiency of Energy Hub

Author(s):: LI Hongwei; JING Haojie; WU Lei; LI Tingyu; School of Electrical Engineering and Information, Southwest Petroleum University, Chengdu 610500, China

Keywords:: variable energy efficiency; energy hub; standardized matrix model; electric heating network; optimal operation

CLC:: TM732

DOI:: 10.13705/j.issn.1671-6833.2023.04.015

Abstract:: In the optimization operation of electric heating networks based on energy hubs, the neglect of the characteristic of energy efficiency of energy hub equipment changing with its input or output power leads to a significant deviation between the optimization operation results and the actual results. To solve this problem, firstly, the piecewise linearization method was used to approximate the variable energy efficiency of the equipment, and a standardized matrix model was established to characterize the energy hub considering the variable energy efficiency of the equipment. Secondly, with the goal of minimizing the total cost of system energy procurement, a linear model for optimizing the operation of the electric heating network was established by coupling the regional heating network and distribution network considering the energy hub with variable energy efficiency of equipment. Finally, numerical examples were used verifying that the optimized operation of the electric heating network is related to the variable energy efficiency of the energy hub equipment. The operation situation of the electric heating network based on the variable energy efficiency of the equipment,compared with the operation of the electric heating network based on constant energy efficiency of the equipment, the relative error in operating cost dropped from 12.71% to 0.03%, the wind power consumption rate increased by 4.29%。

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