Coordinated Optimal Dispatch of Transmission and Distribution Power Systems Considering Operation Flexibility of Integrated Energy System

被引:0
|
作者
Ji X. [1 ]
Zhang X. [1 ]
Yu Y. [2 ]
Zhang Y. [1 ]
Yang M. [2 ]
Liu J. [1 ]
机构
[1] College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao
[2] Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan
基金
中国国家自然科学基金;
关键词
coordination of transmission and distribution power systems; integrated energy system; operation flexibility; optimal dispatch; renewable energy; uncertainty;
D O I
10.7500/AEPS20220215008
中图分类号
学科分类号
摘要
In the background of the high proportion of intermittent renewable energy penetrating into the integrated energy system (IES), the coupling of the electricity-gas-heat multi-energy system is deepening, and the two-way flow of multi-energy in the transmission and distribution power systems is becoming increasingly prominent, which brings challenges to the flexible and efficient operation of IES. To this end, an optimal dispatch model is proposed considering the system operation flexibility with the coordinated mechanism of transmission and distribution power systems. First, based on the demand analysis of the operation flexibility within the net load variation range, the capability of all kinds of energy to provide flexibility is delicately depicted, and a mathematical model of flexibility resources and flexibility requirements is built. On this basis, the unit commitment model of transmission grid (TG) and the optimal dispatch model of the operation flexibility in the active distribution network (ADN) are constructed respectively. Finally, to improve the solving efficiency, the incremental piecewise linearization method is used to linearize the nonlinear terms in the proposed model, and the analytical target cascading method is applied to realize the decoupling and distributed solution of the TG and ADN. The results of numerical examples based on T6D2 and T118D10 test systems demonstrate the effectiveness of the proposed model and method. © 2022 Automation of Electric Power Systems Press. All rights reserved.
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页码:29 / 40
页数:11
相关论文
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