Operation Optimization of Multi-District Integrated Energy System Considering Flexible Demand Response of Electric and Thermal Loads

Cheng Zhou, Jianyong Zheng, Sai Liu, Yu Liu, Fei Mei, Yi Pan, Tian Shi and Jianzhang Wu
Additional contact information
Cheng Zhou: School of Electrical Engineering, Southeast University, Nanjing 210096, Jiangsu, China
Jianyong Zheng: School of Electrical Engineering, Southeast University, Nanjing 210096, Jiangsu, China
Sai Liu: State Grid Jiangsu Electric Power Co., Ltd., Maintenance Branch Company, Nanjing 211102, Jiangsu, China
Yu Liu: School of Electrical Engineering, Southeast University, Nanjing 210096, Jiangsu, China
Fei Mei: School of Electrical Engineering, Southeast University, Nanjing 210096, Jiangsu, China
Yi Pan: School of Electrical Engineering, Southeast University, Nanjing 210096, Jiangsu, China
Tian Shi: School of Electrical Engineering, Southeast University, Nanjing 210096, Jiangsu, China
Jianzhang Wu: School of Electrical Engineering, Southeast University, Nanjing 210096, Jiangsu, China

Energies, 2019, vol. 12, issue 20, 1-26

Abstract: Multi-district integrated energy system (IES) can make full use of the complementary characteristics of district power and thermal system, and loads in different districts. It can improve the flexibility and economy of system operation, which has a good development prospect. Firstly, based on the general energy transfer model of the district heating network (DHN), the DHN system is described by the basic equations of the heating network and nodes considering the characteristics of the transmission time delay and heat loss in pipelines. A coupling model of DHN and multi-district IES is established. Secondly, the flexible demand response (FDR) model of electric and thermal loads is established. The load characteristics of each district in IES are studied. A shiftable load model based on the electric quantity balance is constructed. Considering the flexibility of the heat demand, a thermal load adjustment model based on the comfort constraint is constructed to make the thermal load elastic and controllable in time and space. Finally, a mixed integer linear programming (MILP) model for operation optimization of multi-district IES with the DHN considering the FDR of electric and thermal loads is established based on the supply and demand sides. The result shows that the proposed model makes full use of the complementary characteristics of electric and thermal loads in different districts. It realizes the coordinated distribution of thermal energy among different districts and improves the efficiency of thermal energy utilization through the DHN. FDR effectively reduces the peak-valley difference of loads. It further reduces the total operating cost by the coordinated operation of the DHN and multi-district IES.

Keywords: multi-district integrated energy system; complementary characteristics; district heating network; flexible demand response; operation optimization; mixed integer linear programming (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/20/3831/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/20/3831/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:20:p:3831-:d:274985

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().