新型电力系统中储能应用功能的综述与展望

Functions of Energy Storage in Renewable Energy Dominated Power Systems: Review and Prospect

以高比例新能源和高比例电力电子(即“双高”)为特征的新型电力系统处在快速发展中,其动态行为和运行特性正发生深刻变化,在多时间尺度上的功率–能量平衡面临重大挑战;而储能可有效改善系统的动态特性、满足系统多时间尺度平衡需求。从分析新型电力系统多时间尺度功率–能量平衡的主要挑战出发,归纳常见储能技术的关键技术特征,探讨储能在新型电力系统中的应用潜力;梳理储能应用功能的研究现状,展望未来趋势,提出一种适用新型电力系统需求的储能多目标协同调控方法,可望实现多时间尺度上功率–能量的高效平衡,为利用储能技术应对新型电力系统的关键挑战提供支撑。

New-type power system, characterized by high penetration of renewable energy and power electronic equipment, is undergoing rapid development. Its significantly changed dynamic behavior and operating characteristics are bringing serious concerns to the balance of power and energy in different time scales. Energy storage is of great potential to improve operating performance and to balance power and energy in broad time scales. This paper first reviews the challenges in achieving multi-time-scale balance of power and energy in a new-type power system. Next, the key technical features of different energy storage technologies are summarized and their potential applications are explored. Then, the status quo of research on energy storage’s functions is investigated. Finally, a multi-objective coordinated control scheme is proposed to achieve prospective and comprehensive functions of energy storage. Hopefully, the scheme can balance power and energy well in different time scales, and make energy storage the key to addressing the various challenges faced by a new-type power system.