Electric Power ›› 2023, Vol. 56 ›› Issue (4): 146-155.DOI: 10.11930/j.issn.1004-9649.202204087

• Integrated Energy Technology • Previous Articles     Next Articles

Optimal Scheduling of Integrated Energy System Considering Uncertainty of Heat Medium Flow Rate and Heating Network Loss

ZHANG Tao1, LIU Kang1, TAO Ran2, WANG Qingchuan2, HUANG Mingjuan2   

  1. 1. School of Electrical and New Energy, China Three Gorges University, Yichang 443002, China;
    2. Hubei Engineering Research Center for Smart Energy Technology (China Three Gorges University), Yichang 443002, China
  • Received:2022-04-20 Revised:2022-11-29 Accepted:2022-07-19 Online:2023-04-23 Published:2023-04-28
  • Supported by:
    This work is supported by National Natural Science Foundation of China (Research on Dynamic Optimal Scheduling Method of Electric-thermal Coupling System with Spatial and Temporal Heterogeneity Considering Dynamic Process of Heat Transfer, No.52007103).

Abstract: Aiming at the coupling of multiple energy sources and the heterogeneity of different energy sources in integrated energy system, a more accurate approximate heating pipeline model is firstly constructed using flow segmentation method, and combined with the heat storage characteristics of buildings, a thermal system model is jointly constructed with consideration of two types of thermal inertia; secondly, the characteristics of thermal energy in the scheduling process are studied, and two types of uncertain quantities are described; and then, a robust optimization model and an opportunistic optimization model are established using the information gap decision theory (IGDT) method, and the NSGA-II algorithm is introduced to solve the multi-objective model; finally, the simulation results of a 44-node heating network system show that the proposed method can effectively quantify the influence of uncertainty of heat medium flow rate and heat loss on scheduling operation, and improve the economy of system operation.

Key words: integrated energy system, thermal inertia, IGDT, uncertainty, heat loss