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含正反馈孤岛检测方案的有源直流配电系统交互动力学分析与抑制

Analysis and Mitigation of Interaction Dynamics in Active DC Distribution Systems With Positive Feedback Islanding Detection Schemes

语言:

中文摘要

直流配电系统因高比例直流负载和分布式电源的接入而备受关注。本文探讨了直流系统中紧密调节变换器带来的稳定性挑战,重点分析了正反馈孤岛检测方案引发的交互动力学问题,并提出了相应的抑制策略,以提升直流微电网的运行稳定性。

English Abstract

The direct current (DC) technology has gained significant momentum in modern distribution systems due to the high penetration levels of dc loads and dc-based distributed generators (DGs). Unlike conventional ac distribution systems, dc distribution systems have the following distinct features that challenge the system stability. 1) The high penetration level of tightly regulated converters used to...
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SunView 深度解读

该研究关注直流微电网中的稳定性与孤岛检测,与阳光电源的PowerTitan、PowerStack系列储能系统及直流耦合微电网解决方案高度相关。在直流配电场景下,PCS的控制策略需兼顾孤岛检测与系统阻抗匹配,以避免正反馈机制带来的振荡。建议研发团队在开发构网型(GFM)储能变流器时,参考文中提出的交互动力学抑制方法,优化多机并联下的阻抗重塑算法,提升阳光电源在复杂直流微电网环境下的系统兼容性与并网稳定性。