摘要
水风光打捆可为新能源大规模高效、安全并网提供重要保障,有助于提高清洁能源利用效率,进而早日实现“双碳愿景目标”,但也将加剧对水电机组运行效率的影响。重点探讨了水风光打捆模式下不同新能源占比对水电机组效率的影响以及规律。首先,构建了水风光打捆送出模式下的日调度模型,然后以乌东德水电站及其附近的虚拟风、光电场为研究对象开展了算例研究。结果表明:随着新能源占比的增加,在枯期水电机组的运行效率会下降,而在汛期则呈现先升后降的规律;对比发现,在相同装机条件下,汛期水电机组效率的日内波动性较枯期小,汛期进行水风光打捆更有利于提高水电机组的运行效率。研究成果可为新能源大规模消纳背景下的装机容量优化配置和水电机组优化运行提供参考依据。
The bundling of hydro-wind-solar energies serves as an important guarantee for the large-scale, efficient and safe grid-connection of new energy resources, and is conducive to improving the efficiency of clean energy utilization, thus realizing the “double carbon vision target” at an early date;on the other hand, it will also aggravate the influence on the operation efficiency of hydropower units.In this paper, the effect of different new energy ratios on the efficiency of hydropower units under the hydro-wind-solar bundling mode is discussed.First, a daily-bundling dispatching model is constructed under hydro-wind-solar mode, and then a numerical example is given to study the virtual wind and photoelectric fields around the Wudongde dam.Results reveal that with the increase of new energy, the operating efficiency of hydropower units will decrease in dry season but increase first and then decrease in flood season.The fluctuation of the efficiency of hydropower units within a day in flood season is smaller than that in dry season.Consequently, hydro-wind-solar bundling in flood season is more favorable to improve the operation efficiency of hydropower units.
作者
齐帅
王现勋
曾坤
汤正阳
姚华明
QI Shuai;WANG Xian-xun;ZENG Kun;TANG Zheng-yang;YAO Hua-ming(Hubei Key Laboratory of Petroleum Geochemistry and Environment,Yangtze University,Wuhan 430100,China;Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education,Yangtze University,Wuhan 430100,China;China Yangtze Power Co.,Ltd.,Yichang 443000,China;Hubei Key Laboratory of Intelligent Yangtze River and Hydroelectric Science,Yichang 443000,China)
出处
《长江科学院院报》
CSCD
北大核心
2023年第1期43-50,共8页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金联合基金重点支持项目(U1865201)
国家自然科学基金面上项目(51979198)。
关键词
清洁能源
水风光打捆
多能互补
水电机组
机组效率
乌东德水电站
clean energy
hydro-wind-solar bundling
multi-energy complementarity
hydropower units
power unit efficiency
Wudongde hydropower station
