Optimal Dispatching of Integrated Electricity and Heating System with Multiple Functional Areas Considering Heat Network Flow Regulation

Xueyan Wu, Qun Zhang, Changming Chen, Zesen Li, Xiaojun Zhu, Yuge Chen, Weiqiang Qiu, Li Yang and Zhenzhi Lin
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Xueyan Wu: Polytechnic Institute, Zhejiang University, Hangzhou 310015, China
Qun Zhang: Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210008, China
Changming Chen: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Zesen Li: Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210008, China
Xiaojun Zhu: Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210008, China
Yuge Chen: Polytechnic Institute, Zhejiang University, Hangzhou 310015, China
Weiqiang Qiu: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Li Yang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Zhenzhi Lin: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2021, vol. 14, issue 17, 1-24

Abstract: The integrated electricity and heating system (IEHS) can satisfy the diversified energy demand and improve energy efficiency through electro-thermal synergy and complementarity, which is beneficial for energy transformation and global climate governance. To reduce the operation cost, renewable energy source (RES) abandonment, and purchased electricity of IEHS, an optimal dispatching method of IEHS with multiple functional areas considering the flow regulation of the heat network is proposed. Firstly, the functional area of IEHS is classified and the functional area’s load characteristics are analyzed. Secondly, a heat network model considering refined resistance and dynamic characteristics is constructed and the operation regulation modes of the heat network are analyzed. Thirdly, an optimal dispatching model of IEHS with multiple functional areas considering heat network flow regulation is established to minimize the operation cost of IEHS with multiple functional areas while considering the penalty cost of RES abandonment and time-of-use electricity price. Finally, a certain region in China is taken as a case study to verify the effectiveness of the proposed optimal dispatching model. The case study shows that the quality regulation mode of the heat network considering flow change in multiple stages can effectively reduce RES abandonment by 2.4%, purchased electricity by 5.4%, and the system operation cost by 1.7%. In addition, compared with the independent dispatching of each functional area, the joint dispatching of IEHS with multiple functional areas can reduce the amount of RES abandonment by 95.2% and purchased electricity by 66.5%, and lower the operation cost of IEHS by 23.6%.

Keywords: integrated electricity and heating system; heat network operation; flow regulation; multiple functional areas (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 (1)

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