Modeling and optimal operation of community integrated energy systems: A case study from China

Chengshan Wang, Chaoxian Lv, Peng Li, Guanyu Song, Shuquan Li, Xiandong Xu and Jianzhong Wu

Applied Energy, 2018, vol. 230, issue C, 1242-1254

Abstract: The operation of community integrated energy systems (CIESs) is challenging because it is necessary to couple energy production, conversion and consumption on the end-user side. Multiple energy demands need to be fed simultaneously with the goal of economy and reliability. This paper formulates the optimal scheduling problem based on a real community integrated energy system in China. The system has multiple chillers (i.e. three ground source heat pumps, two conventional water-cooled chillers and two double-duty chillers) and two types of thermal storage devices (i.e. two cold water tanks and an ice-storage tank). Based on detailed device modeling, a community integrated energy system operation strategy considering unit commitment is proposed, and then is transformed into a mixed-integer linear programming model by linearization of nonlinear items. Case studies are conducted based on the data for a typical day in summer. The results show that the proposed strategy can utilize the flexibility of the energy storage devices and realize an economic and reliable operation of the community integrated energy system by coordinating various energy devices. The strategy can also reduce the startup/shutdown frequency of chillers significantly.

Keywords: Community integrated energy system (CIES); Thermal storage device; Optimal operation; Unit commitment; Mixed-integer linear programming (MILP) (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (49)

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DOI: 10.1016/j.apenergy.2018.09.042

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