Two-stage Optimal Dispatching Method for Distribution System Flexibility Improvement Considering Dynamic Reconfiguration

被引：0
作者：
Wu Z. [1 ]
Qin C. [1 ]
Yu Y. [1 ]
机构：
[1] Key Laboratory of Smart Grid, Tianjin University, Ministry of Education, Nankai District, Tianjin
来源：
Dianwang Jishu/Power System Technology | 2020年 / 44卷 / 12期
关键词：
Distributed generators; Dynamic reconfiguration; Flexibility; Optimal dispatch; Static reconfiguration;
D O I：
10.13335/j.1000-3673.pst.2019.1584
中图分类号：
学科分类号：
摘要：
With the integration of high penetration of renewable distributed generators, their variability and uncertainty have brought great challenges to the secure operation of distribution systems. To improve the flexibility of distribution systems, the optimal dispatching method considering dynamic reconfiguration is studied. Firstly, as the variability and uncertainty of the net load respectively increase the flexibility requirement of the system, the main factors affecting the flexibility supply of distribution systems and the mechanism of flexibility improvement through network reconfiguration are analyzed. Then considering the uncertainty of renewable distributed generators and the adjustment capability of controllable generators, a two-stage robust optimization model is proposed to improve the flexibility of distribution systems through dynamic reconfiguration, in which, the comprehensive operation cost of the distribution systems is minimized. In the proposed model, the network reconfiguration schemes and the flexible scheduling schemes are determined in the first step, and the flexible adjustment schemes based on the above scheduling schemes are determined in the second step. The proposed model is solved by the column-and-constraint generation algorithm and its validity and rationality are verified by an illustrative system. © 2020, Power System Technology Press. All right reserved.
引用
收藏
页码：4644 / 4653
页数：9
相关论文
共 28 条
  • [1] (2015)
  • [2] (2019)
  • [3] Kang Chongqing, Yao Liangzhong, Key scientific issues and theoretical research framework for power systems with high proportion of renewable energy, Automation of Electric Power Systems, 41, 9, pp. 1-10, (2017)
  • [4] Special report: accommodating high levels of variable generation, (2009)
  • [5] Agency I E., Empowering variable renewables-options for flexible electricity systems, (2009)
  • [6] Mohandes B, Moursi M S E, Hatziargyriou N D, Et al., A review of power system flexibility with high penetration of renewables, IEEE Transactions on Power Systems, 34, 4, pp. 3140-3155, (2019)
  • [7] Xiao Dingyao, Wang Chengmin, Zeng Pingliang, Et al., A survey on power system flexibility and its evaluations, Power System Technology, 38, 6, pp. 1569-1576, (2014)
  • [8] Lu Zongxiang, Li Haibo, Qiao Ying, Flexibility evaluation and supply/demand balance principle of power system with high-penetration renewable electricity, Proceedings of the CSEE, 37, 1, pp. 9-19, (2017)
  • [9] Liu Wanyu, Li Huaqiang, Zhang Hongli, Et al., Expansion planning of transmission grid based on coordination of flexibility power supply and demand, Automation of Electric Power Systems, 42, 5, pp. 56-63, (2018)
  • [10] Ulbig A, Andersson G., Analyzing operational flexibility of electric power systems, International Journal of Electrical Power & Energy Systems, 72, pp. 155-164, (2015)
123