Battery Energy Storage System Supporting Frequency Regulation of Power System with High Renewable Penetration

2023 13th International Conference on Power, Energy and Electrical Engineering (CPEEE) Pub Date : 2023-02-25 DOI:10.1109/CPEEE56777.2023.10217425

Nomvelo Nzimande, Y. Noro

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Abstract

The utilization of renewable energy (RE) has increased worldwide because it is one of the effective ways to minimize greenhouse gases. The power outputs of photovoltaic (PV) and wind farms depend on weather conditions. High penetration of intermittent renewable energy (IRE) will put pressure on frequency regulation, and frequency fluctuation will increase because IRE does not participate in frequency regulation. This study evaluated the role of battery energy storage systems (BESS) in the frequency regulation of a grid with large-scale IRE. The simulations were conducted in the MATLAB–Simulink environment, taking into consideration the operating conditions of the Republic of South Africa (RSA) power system, such as frequency deviation limits. Eskom’s (the RSA utility company) policy requires its operators to keep the system frequency between 49.85 Hz and 50.15 Hz 95% of the time. The BESS was integrated into the load frequency control (LFC) model to assist with frequency regulation and maintain the frequency between 49.85 Hz and 50.15 Hz.

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支持高可再生渗透率电力系统调频的电池储能系统

可再生能源作为减少温室气体排放的有效途径之一，在世界范围内得到了越来越多的利用。光伏(PV)和风力发电场的功率输出取决于天气条件。间歇性可再生能源(IRE)的高渗透率将给频率调节带来压力，由于IRE不参与频率调节，频率波动将加大。本研究评估了电池储能系统(BESS)在大规模IRE电网频率调节中的作用。仿真在MATLAB-Simulink环境下进行，考虑了南非共和国(RSA)电力系统的运行条件，如频率偏差限制。Eskom (RSA公用事业公司)的政策要求其运营商在95%的时间内将系统频率保持在49.85 Hz和50.15 Hz之间。BESS集成到负载频率控制(LFC)模型中，以协助频率调节并将频率保持在49.85 Hz和50.15 Hz之间。

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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2023 13th International Conference on Power, Energy and Electrical Engineering (CPEEE)

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