Day-Ahead Hierarchical Steady State Optimal Operation for Integrated Energy System Based on Energy Hub

Yongjie Zhong, Dongliang Xie, Suwei Zhai and Yonghui Sun
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Yongjie Zhong: College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China
Dongliang Xie: Department of Engineering Mechanics, NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 211000, China
Suwei Zhai: College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China
Yonghui Sun: College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China

Energies, 2018, vol. 11, issue 10, 1-18

Abstract: The integrated energy system (IES) has the characteristic of energy system integrated/multi-energy coupling that involves heat, cooling, electricity, natural gas, and various other energy forms, which can maximize the synergistic effects and complementary benefits among various energy forms and their comprehensive utilization. In this paper, based on energy hub (EH), the day-ahead hierarchical steady state optimal operation for IES is discussed, in which the coupling natural gas system, electricity transmission system, and district heating system are all considered. Firstly, the model architecture of EH with diverse storage devices, renewable energy, and different energy conversion equipment is proposed and the steady state mathematical model of different energy networks in IES is developed, respectively. Secondly, the day-ahead operating cost of EH is minimized by an optimizing strategy to maximize the benefits of all kinds of energy demand users, where different types of energy power input into EH can be obtained. Then, the day-ahead optimal operation mode for IES considering minimization of operating fuel cost index is proposed via an energy management system, which provides various energy power data that are uploaded from EH. Finally, numerical results are presented to verify the effectiveness and usefulness of the day-ahead hierarchical optimal operation and steady state calculation analysis for IES, which could further illustrate that the proposed optimal operation can meet the requirements of practical engineering applications.

Keywords: integrated energy system (IES); hierarchical optimization; steady state; energy hub (EH); heat/electricity/natural gas (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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