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具有灵活电网支撑控制器的分布式发电变换器分析与增强模型控制设计

Analysis and Augmented Model-Based Control Design of Distributed Generation Converters With a Flexible Grid-Support Controller

语言:

中文摘要

在电压跌落期间为电网提供支撑是分布式发电单元的关键并网要求。针对非对称电网故障,本文提出了一种灵活的正负序无功电流注入控制策略,该策略与电压跌落幅度成正比,旨在满足最新的电网规范要求,并优化变换器在故障期间的运行性能。

English Abstract

Supporting the host grid during voltage dips has become a major connection requirement for large distributed generation units. Because most of the grid faults are unsymmetrical, the recently developed grid codes suggest the injection of a flexible positive- and negative-sequence reactive current components proportional to the magnitude of the voltage dip at the point of common coupling. However, d...
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SunView 深度解读

该研究直接服务于阳光电源的核心并网技术需求。针对非对称故障的灵活无功支撑策略,可显著提升公司组串式光伏逆变器(如SG系列)及储能变流器(如PowerTitan系列)在弱电网或复杂故障环境下的电网适应性。通过引入增强型模型控制,有助于优化逆变器在LVRT(低电压穿越)过程中的电流控制精度,减少对电网的冲击。建议研发团队将该控制算法集成至iSolarCloud智能运维平台下的高级控制策略库中,以提升产品在全球严苛电网准入标准下的竞争力。