Abido Mahmoud Y, Mahmud Zabir, Sánchez-Pérez Pedro Andrés, Kurtz Sarah R
Mechanical Engineering Graduate Program, School of Engineering, University of California Merced, Merced, CA 95343, USA.
Aerospace Engineering Department, Faculty of Engineering, Cairo University, Giza, Cairo 12613, Egypt.
iScience. 2021 Dec 7;25(1):103577. doi: 10.1016/j.isci.2021.103577. eCollection 2022 Jan 21.
Currently, the most difficult time of year for California to supply the demanded electricity is around sunset on very hot summer days. As California uses more renewable electricity, that challenge may shift to any time of the year depending on the supply of electricity more than on the demand. We study various scenarios for applying a 100% renewable energy grid using six years (2015-2020) of historical demand and scaled-up solar and wind generation to investigate the main function of the storage in affording adequate electricity supply at all times of the year. We identify the times of year that may be most challenging. We detect that, for a solar dominant generation profile, the ultimate challenge shifts from summer to winter. Furthermore, the critical time of the year may be shifted by one or two months depending on the amount and the mix of the renewable generation that will be built.
目前，加利福尼亚一年中供应所需电力最困难的时期是在非常炎热的夏日日落时分。随着加利福尼亚使用更多的可再生电力，这一挑战可能会根据电力供应而非需求情况转移到一年中的任何时候。我们利用六年（2015 - 2020年）的历史需求数据以及扩大规模后的太阳能和风能发电量，研究了应用100%可再生能源电网的各种情景，以调查储能在全年随时提供充足电力供应方面的主要作用。我们确定了一年中可能最具挑战性的时期。我们发现，对于以太阳能为主的发电模式，最终挑战从夏季转移到了冬季。此外，一年中的关键时期可能会根据将要建设的可再生能源发电量及其组合情况提前一到两个月。
