AUTHOR=Yang Shengchun , Chang Yifan , Xie Jun 

TITLE=Tight power balance multi-time scale disposal strategy for wind integrated system considering electric vehicle charging station

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2023.1163891

DOI=10.3389/fenrg.2023.1163891

ISSN=2296-598X

ABSTRACT=High wind power penetration and peak load pose significant challenges to the power system in maintaining the power supply demand balance. Once the power supply demand balance is disrupted, system load shedding and wind spillage become inevitable. In this study, the above problem is defined as the tight power balance (TPB) problem. The accuracy of wind power and load forecasting increases with a decrease in the forecasting time scale. Based on the above characteristics, a TPB multi-time scale disposal strategy for wind integrated power systems considering electric vehicle (EV) charging stations is established to address the TPB problem at different time scales. First, the operation model of an electric vehicle charging station offering flexible ramping capacity is established. Second, a multi-time scale disposal strategy, which includes an intra-day 4-hour plan, an intra-day 1-hour plan, and a real-time 15-minute plan, is presented by quantifying the flexible demand at different time scales. Finally, the proposed strategy is verified using a modified IEEE 118-bus system. The analysis results show that the proposed TPB multi-time scale disposal strategy effectively promotes the disposal level of the TPB problem.