AUTHOR=Zhang Xiaotian , Lu Mingxuan , Li Hua , Gao Fengxi , Zhong Chongfei , Qian Xiaoyi 

TITLE=Flexibility resource planning of a power system considering a flexible supply–demand ratio

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2023.1194595

DOI=10.3389/fenrg.2023.1194595

ISSN=2296-598X

ABSTRACT=Aiming at the problems of insufficient power system regulation capacity and lack of flexible resources caused by source-load uncertainty, the flexible resource planning of power system is studied with the goal of improving flexibility. In this paper, uncertainty and flexibility are combined, and a probability index of insufficient supply-demand ratio of flexibility is proposed based on the probability characteristics of flexibility. A bi-level programming model of power system flexibility resources considering the probability of insufficient flexibility supply-demand ratio is constructed. The optimal economy is used as the objective function of the planning layer, and the proposed minimum probability index of the flexible supply-demand ratio is used as the objective function of the operation layer. Economy and flexibility are studied taking the power system in a certain area in Northeast China as the research object. A flexible resource planning scheme that meets different flexibility expectations is obtained, and the scheme is discussed in detail from the aspects of system flexibility, economic cost, and new energy consumption capacity. The effectiveness of quantitative indicators and planning methods are verified.