论文标题
基于存储的频率塑形控制
Storage-Based Frequency Shaping Control
论文作者
论文摘要
随着系统惯性的减少，频率安全成为世界各地电力系统的问题。由于其出色的坡道功能，储能系统（ESS）被认为是在重大意外情况下改善频率响应的自然选择。在本手稿中，我们提出了一种用于储能存储的新策略 - 频率构成控制 - 允许完全消除频率nadir，这是频率安全性的主要问题之一，同时调整了频率变化率（ROCOF）为所需的值。通过消除Nadir，可以通过简单的代数计算进行频率安全评估，而不是传统控制策略的动态模拟。此外，就存储峰值功率的要求而言，我们提出的控制也非常有效，与传统的虚拟惯性方法相比，需要少40％的功率才能获得相同的性能。
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 frequency response following major contingencies. In this manuscript, we propose a new strategy for energy storage -- frequency shaping control -- that allows to completely eliminate the frequency Nadir, one of the main issue 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 up to 40% less power than conventional virtual inertia approach for the same performance.
