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局部阴影条件下光伏系统改进的基于割线法的全局灵活功率点跟踪

Improved Secant-Based Global Flexible Power Point Tracking in Photovoltaic Systems Under Partial Shading Conditions

语言:

中文摘要

本文针对低惯性电网中光伏系统的频率支撑需求,提出了一种改进的基于割线法的灵活功率点跟踪(FPPT)算法。该算法旨在解决局部阴影条件下光伏阵列多峰值特性带来的功率调节难题,通过精确跟踪参考功率,提升光伏系统在复杂环境下的电网辅助服务能力。

English Abstract

Flexible power point tracking (FPPT) control algorithms have been introduced in the literature to provide frequency support in low-inertia grid-connected photovoltaic (PV) systems. This is achieved by regulating the PV output power to a power reference obtained from the energy management system. Partial shading of PV arrays is a frequent phenomena that needs to be investigated for FPPT operation o...
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SunView 深度解读

该研究直接服务于阳光电源组串式及集中式光伏逆变器在电网辅助服务中的应用。随着全球电网对光伏电站调频、调峰能力要求的提高,该算法能显著提升阳光电源产品在复杂阴影环境下的功率输出精度。建议将该改进算法集成至iSolarCloud智能运维平台及逆变器控制固件中,以增强电站对弱电网的适应性,特别是在分布式光伏和大型地面电站中,可有效提升系统在部分遮挡下的发电效率与电网支撑性能,助力实现构网型光伏技术升级。