• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

Electric Power Construction ›› 2020, Vol. 41 ›› Issue (5): 116-123.doi: 10.12204/j.issn.1000-7229.2020.05.014

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Economic Optimal Scheduling of AC/DC Distribution Network Coordinating Flexible Load and Energy Storage Systems#br#

ZHANG Zhirong, QIU Xiaoyan, SUN Xu, REN Hao, ZHANG Mingke   

  1. College of Electrical Engineering, Sichuan University, Chengdu 610065, China
  • Online:2020-05-01
  • Supported by:
    This work is supported by Key Research and Development Program of Science and Technology Department of Sichuan Province(No. 2017FZ0103).

Abstract: As renewable energy and DC loads in distribution networks have gradually increased, the development of DC distribution networks has been valued, and research on the optimal scheduling of AC/DC distribution networks has become one of the important topics. In order to promote the consumption of renewable energy, to coordinate the operating status of both the AC and DC sides, and to reduce the operating cost of the distribution network, divide the flexible load into transferable load and reducible load, consider the impact of energy storage participation in optimal scheduling, and take into account the losses of AC and DC lines, energy storages and converter stations, by scheduling the output power of distribution generation, energy storage systems and voltage source converter, an economic scheduling model based on second order conic relaxation, segmental approximate linearization and other technologies is proposed, which aims to minimize total cost of purchasing electricity, abandoning wind and solar power, suffering losses and scheduling flexible load. Finally, simulation analysis on a 50-node system verifies the effectiveness and rationality of the proposed scheduling scheme.

Key words: AC/DC distribution network, distribution generation, flexible load, energy storage system, second order conic relaxation, economic schedule

CLC Number: