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电网相位扰动下并网模块化多电平变换器的稳定性与多约束运行区域

Stability and Multiconstraint Operating Region of Grid-Connected Modular Multilevel Converter Under Grid Phase Disturbance

语言:

中文摘要

本文研究了电网故障(如短路、断路及线路切换)导致的相位突变对并网变换器的影响。由于锁相环(PLL)无法瞬时跟踪相位变化,变换器运行受到挑战。文章提出了一种分析方法,以确定变换器在电网相位扰动下的稳定性及多约束运行区域,为提升变换器在复杂电网环境下的鲁棒性提供了理论支撑。

English Abstract

Grid-connected converters may operate under grid fault conditions, such as the short-/open-circuit and the transmission line switching, which may be accompanied by a phase angle difference between the grid and converter. This variation will affect the normal operation of the converter since its phase-locked loop is not able to track the grid voltage phase angle immediately. In this article, an ins...
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SunView 深度解读

该研究针对模块化多电平变换器(MMC)在电网相位扰动下的稳定性分析,对阳光电源的大功率集中式逆变器及大型储能系统(如PowerTitan系列)具有重要参考价值。随着电网弱电网特性增强,电网故障下的相位突变极易导致逆变器失稳。建议研发团队借鉴文中的多约束运行区域分析方法,优化锁相环控制策略及故障穿越逻辑,提升阳光电源产品在极端电网环境下的并网稳定性与抗干扰能力,确保大型电站项目在复杂电网故障下的安全运行。