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用于构网型逆变器故障后振荡阻尼的自适应虚拟电阻

Adaptive Virtual Resistance for Postfault Oscillation Damping in Grid-Forming Inverters

语言:

中文摘要

本文探讨了并网电压源逆变器(VSI)在故障后出现的有功功率和电压振荡问题。这些振荡主要源于控制器参数整定不佳及过流保护限制,在弱电网条件下尤为显著。文章提出了一种自适应虚拟电阻方法,旨在抑制振荡并改善故障后的系统恢复性能。

English Abstract

Postfault oscillations in active power and voltage responses of grid-connected voltage source inverters (VSIs) have been reported in the literature. They are caused by nonideally tuned controllers and the implemented current limitations used for protecting the VSIs from overcurrents. These oscillations become even more significant when the VSI is connected to a weak grid, deteriorating the recover...
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SunView 深度解读

该技术对阳光电源的构网型(GFM)产品线具有极高价值。随着PowerTitan系列储能系统及大型地面光伏电站越来越多地接入弱电网,故障后的功率振荡已成为影响电网稳定性的关键挑战。本文提出的自适应虚拟电阻策略,可直接优化阳光电源GFM逆变器的控制算法,提升系统在弱电网下的阻尼特性和故障穿越能力。建议研发团队将该算法集成至iSolarCloud智能运维平台及逆变器底层控制固件中,以增强PowerTitan和组串式逆变器在复杂电网环境下的电能质量与运行稳定性。