A Resilience Assessment Framework for Distribution Systems Under Typhoon Disasters

IEEE Access

Zhenjie Wu¹  Jian Tang¹  Yuantao Wang¹  Tianen Huang¹  Xiang Li¹  Yixi Zhou¹  Yajun Mo¹  Sicong Sun¹  Tao Niu²  Lin Xue² 

[1] State Grid Hangzhou Power Supply Company, Hangzhou, China;State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, China;

关键词: Vulnerability model;    resilience assessment;    island division;    resilience index;   

DOI  :  10.1109/ACCESS.2021.3128967

来源: DOAJ

【 摘 要 】

With the increase of extreme natural disasters and the frequent occurrence of man-made attacks, resilience studies of power grids have attracted much attention, among which resilience assessment reflects the resistance and resilience of power systems to cope with extreme disasters. To improve the resilience of distribution grids under extreme weather conditions, this paper proposes a resilience assessment framework for distribution grids under typhoon disasters. First, a probabilistic generation model of typhoon is established. Second, a spatiotemporal vulnerability model of the distribution grid lines to quantify the spatiotemporal impacts of typhoon. Third, a breadth-first search algorithm is used to island the distribution grid, and the amount of load shedding of the islanded microgrid is calculated. Meanwhile, the resilience of the distribution grid was quantitatively assessed according to the proposed new resilience index. Finally, the feasibility of the proposed resilience assessment method is verified in the IEEE 33-bus test system, and the results show that the proposed method can accurately account for the impact of typhoon on the distribution grid and provides a quantitative reference basis for later power system planning and scheduling.

【 授权许可】

Unknown