Study on power fluctuation factors of photovoltaic power generation system coupled with energy storage devices

Optical Technology, Semiconductor Materials, and Devices Pub Date : 2023-02-14 DOI:10.1117/12.2669861

Guoping Chen, Yong Wang, Ping Huang, Feihu Zhuang, Zhiyu Zhang, Yahui He, Tengyu Ma, Yuchao Yan

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Abstract

Photovoltaic power generation has the characteristics of intermittency and randomness, and its output power has strong volatility, which will endanger the stable operation of the power grid when connected to the grid. Using energy storage can reduce the volatility of photovoltaic grid connected power and realize the stabilization of the fluctuation of photovoltaic grid connected power. This paper analyses the requirements of the grid connected power fluctuation rate of the coupling energy storage device of the photovoltaic power generation system and uses the variation modal decomposition to decompose the original photovoltaic power to obtain the grid connected power that meets the fluctuation requirements. An over calculation example verifies that the photovoltaic power can reduce the power fluctuation after being compensated by the hybrid energy storage system and compares and analyses the configuration results of different energy storage schemes, verifying that the method proposed in this paper can reduce the power of energy storage capacity and annual comprehensive cost to improve the economy of the system.

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光伏发电系统耦合储能装置功率波动因素研究

光伏发电具有间歇性和随机性的特点，其输出功率具有较强的波动性，并网后将危及电网的稳定运行。利用储能可以降低光伏并网功率的波动性，实现光伏并网功率波动的稳定。本文分析了光伏发电系统耦合储能装置并网功率波动率的要求，利用变模态分解对原始光伏功率进行分解，得到满足波动要求的并网功率。通过算例验证了光伏发电经混合储能系统补偿后，可以减小功率波动，并对不同储能方案的配置结果进行了对比分析，验证了本文提出的方法可以降低电力的储能容量和年综合成本，提高系统的经济性。

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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Optical Technology, Semiconductor Materials, and Devices

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