Distributed Thermal Energy Storage Configuration of an Urban Electric and Heat Integrated Energy System Considering Medium Temperature Characteristics

Wei Wei, Yusong Guo, Kai Hou, Kai Yuan, Yi Song, Hongjie Jia and Chongbo Sun
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Wei Wei: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Yusong Guo: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Kai Hou: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Kai Yuan: State Grid Economic and Technological Research Institute Co. Ltd., Beijing 102209, China
Yi Song: State Grid Economic and Technological Research Institute Co. Ltd., Beijing 102209, China
Hongjie Jia: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Chongbo Sun: State Grid Economic and Technological Research Institute Co. Ltd., Beijing 102209, China

Energies, 2021, vol. 14, issue 10, 1-34

Abstract: Distributed thermal energy storage (DTES) provides specific opportunities to realize the sustainable and economic operation of urban electric heat integrated energy systems (UEHIES). However, the construction of the theory of the model and the configuration method of thermal storage for distributed application are still challenging. This paper analyzes the heat absorption and release process between the DTES internal heat storage medium and the heat network transfer medium, refines the relationship between heat transfer power and temperature characteristics, and establishes a water thermal energy storage and electric heater phase change thermal energy storage model, considering medium temperature characteristics. Combined with the temperature transmission delay characteristics of a heat network, a two-stage optimal configuration model of DTES for UEHIES is proposed. The results show that considering the temperature characteristics in the configuration method can accurately reflect the performance of DTES, enhance wind power utilization, improve the operation efficiency of energy equipment, and reduce the cost of the system.

Keywords: integrated energy system; thermal energy storage configuration; medium temperature characteristics; investment economy (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: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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