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基于电力电子的电力系统非线性模块化状态空间建模

Nonlinear Modular State-Space Modeling of Power-Electronics-Based Power Systems

语言:

中文摘要

本文针对电力电子电力系统的状态空间建模问题,指出传统通过虚拟电阻连接变流器与电网模型存在精度不足的问题。文章提出了一种非线性模块化建模方法,旨在更准确地描述变流器、输电线路与电网之间的交互,并分析了参数变化对系统稳定性的影响。

English Abstract

Power system state-space models are often constructed by interconnection of their subsystems (converters, distribution lines, and grid). The interconnection between L-/LCL-filtered converters with the distribution lines subsystems is often realized through a virtual resistor, because they both have the voltage as input, introducing inaccuracy. Moreover, the parameters variations influence not only...
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SunView 深度解读

该建模方法对阳光电源的组串式逆变器(如SG系列)及大型储能系统(如PowerTitan)的并网稳定性分析具有重要价值。随着电网弱电网特性日益显著,传统的简化模型已难以满足高比例可再生能源接入的需求。该非线性模块化建模技术可提升阳光电源在复杂电网环境下的控制算法鲁棒性,特别是在构网型(GFM)技术研发中,能更精确地预测系统动态行为,优化并网控制策略,从而提升产品在弱电网下的运行可靠性,助力iSolarCloud平台实现更精准的电网交互监测与故障预警。