Flywheel-Battery Hybrid Energy Storage System Participating in Grid Frequency Regulation Based on Adaptive Inertia Emulation

2022 6th International Conference on Green Energy and Applications (ICGEA) Pub Date : 2022-03-04 DOI:10.1109/icgea54406.2022.9791923

Jingqing Liang, Xinjian Jiang, Boyu Xie, Hongyan Yu

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引用次数: 1

Abstract

Low-inertia power system suffers from high Rate of Change of Frequency (ROCOF) and frequency deviation when facing a sudden imbalance in supply and demand. With the strategy of inertia emulation using Hybrid Energy Storage System (HESS) composed of Flywheel Energy Storage Systems (FESS) and Battery Energy Storage Systems (BESS), frequency regulation can be improved by rapid and long term power supply. In this paper, a coordinated frequency regulation control strategy for HESS is proposed. With the FESS adopting inertia emulation control strategy considering the flywheel’s own inertia and the grid frequency condition and BESS adopting droop control strategy, the ROCOF and frequency deviation are suppressed. Moreover, through coordinated control of the two types of energy storage systems (ESS), the State of Charge (SOC) of the FESS is maintained in an acceptable range, thus improving the ability of the FESS continuously participating in frequency regulation. The control strategy are promoted to the control of HESS array. Simulations are performed on the platform of MATLAB/Simulink.

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基于自适应惯性仿真的飞轮-电池混合储能系统参与电网调频

低惯量电力系统在面对突如其来的供需不平衡时，存在较大的频率变化率和频率偏差。采用由飞轮储能系统(FESS)和电池储能系统(BESS)组成的混合储能系统(HESS)的惯性仿真策略，可以通过快速和长期供电来改善频率调节。本文提出了一种HESS的协调调频控制策略。FESS采用考虑飞轮自身惯量和电网频率条件的惯性仿真控制策略，BESS采用下垂控制策略，从而抑制了ROCOF和频率偏差。此外，通过对两类储能系统(ESS)的协调控制，使FESS的荷电状态(SOC)保持在可接受的范围内，从而提高了FESS持续参与频率调节的能力。将该控制策略推广到HESS阵列的控制中。在MATLAB/Simulink平台上进行了仿真。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 6th International Conference on Green Energy and Applications (ICGEA)

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