Storage-Based Frequency Shaping Control
Storage-Based Frequency Shaping Control
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DOI：
10.1109/tpwrs.2021.3072833
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发表时间：
2020-05
影响因子：
6.6
通讯作者：
Yan Jiang;E. Cohn;P. Vorobev;Enrique Mallada
中科院分区：
文献类型：
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作者：
Yan Jiang;E. Cohn;P. Vorobev;Enrique Mallada
随着系统惯性的减小，频率安全成为世界范围内电力系统的一个问题。储能系统（ESS）由于其出色的斜坡能力，被认为是在重大突发事件后改善频率响应的自然选择。在本文中，我们提出了一种新的策略，用于能量存储-频率整形控制-允许完全消除频率最低点，频率安全的主要问题之一，并在同一时间调整频率的变化率（RoCoF）到所需的值。由于消除了最低点，频率安全评估可以通过简单的代数计算来进行，而不是传统控制策略的动态仿真。此外，我们提出的控制也是非常有效的存储峰值功率的要求方面，需要更少（高达40%的情况下）的功率比传统的虚拟惯性方法相同的性能。
With the decrease in system inertia, frequency security becomes an issue for power systems around the world. Energy storage systems (ESS), due to their excellent ramping capabilities, are considered as a natural choice for the improvement of the frequency response following major contingencies. In this paper, we propose a new strategy for energy storage – frequency shaping control – that allows to completely eliminate the frequency Nadir, one of the main issues in frequency security, and at the same time tune the rate of change of frequency (RoCoF) to a desired value. With Nadir eliminated, the frequency security assessment can be performed via simple algebraic calculations, as opposed to dynamic simulations for conventional control strategies. Moreover, our proposed control is also very efficient in terms of the requirements on storage peak power, requiring less (up to 40% in one of the cases) power than conventional virtual inertia approach for the same performance.