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不平衡故障与弱电网条件下具备电网支撑功能的多分布式电源动态分析及LVRT性能改进

Dynamic Analysis and Improved LVRT Performance of Multiple DG Units Equipped With Grid-Support Functions Under Unbalanced Faults and Weak Grid Conditions

语言:

中文摘要

随着分布式电源(DG)在配电网中渗透率提升,各国电网准则对故障穿越及电网支撑能力提出了更高要求。本文针对弱电网及不平衡故障工况下,多台基于变换器的DG单元缺乏详细动态分析与控制协调的问题,研究了其并网控制策略,旨在提升系统在复杂电网环境下的低电压穿越(LVRT)性能与稳定性。

English Abstract

Due to the increased integration of multiple distributed generation (DG) units into the distribution network, riding through short-term faults and supporting the host grid have been requested by the new grid codes in many countries. However, the literature lacks the detailed dynamic analysis and control coordination of multiple grid-connected converter-based DG units, equipped with advanced contro...
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SunView 深度解读

该研究直接关联阳光电源的核心业务。在弱电网和复杂故障工况下的并网稳定性是组串式逆变器(如SG系列)和储能变流器(如PowerTitan系列)的关键技术壁垒。文章提出的控制协调策略可优化阳光电源逆变器在弱电网下的阻抗匹配与动态响应,提升产品在复杂电网环境下的适应性。建议研发团队参考该动态分析方法,进一步强化PowerTitan系列在弱电网下的构网型(GFM)控制算法,以提升产品在电网故障期间的电压支撑能力,增强iSolarCloud平台对电网异常工况的预警与诊断精度。