Optimal operation of district heat-electric system considering multi-energy flexibility. Issue 1 (1st February 2022)

• Record Type: Journal Article
• Authors: Xu, Feng; Tao, Yuanchao; Qiu, Peng; Ding, Chao; Lu, Yi; Zhao, Lebing; Qin, Hongpei
• Is Part Of: IOP conference series. Volume 983:Issue 1(2022)
• Publication Date: 2022-02-01
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/983/1/012024
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: With increasingly integration of the renewable energy, various uncertainties bring a severe challenge to the operation of the district heat-electric system (DHES). In order to enlarge the accommodation of renewable energy, this paper proposes an optimal operation method of integrated electricity and heat system considering the temporal-coupling feature of multi-energy flexibility. Firstly, the models of multi-energy devices are established to describe the energy conversion. The time delay of heat network is considered and the model of DHES is built as well. Then, considering the uncertainty of load, the time-related upward and downward flexibility constraints are established. The objective function of the optimal economic operation problem is formulated as three parts, including the purchasing price, the operation price, and the curtailment penalty of PV. Finally, a case study based on the IEEE 33-bus power distribution grid and 6-node district heating network is conducted to validate the effectiveness of the method.