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一种用于弱电网分布式发电以增强电压暂降与暂升并存期间电压支撑的先进控制策略

An Advanced Control Strategy for a Weak Grid-Connected DG for Enhancing Voltage Support During Co-occurrence of Sag and Swell

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中文摘要

本文针对弱电网环境下电压暂降与暂升并存(CVSS)的复杂工况,提出了一种先进的控制策略。该策略旨在解决现有技术在抑制零序电压和负序电压方面的不足,通过优化控制算法,在三相系统发生不对称电压扰动时,显著提升电网电压支撑能力,增强分布式电源的并网稳定性。

English Abstract

Numerous control strategies for voltage support are developed to encounter the voltage issues (sag, swell, low voltage, and high voltage). Yet, there is a significant gap in the voltage support concept, such as reduction of zero-sequence voltage along with negative sequence voltage and providing the voltage support during co-occurrence of voltage sag and swell (CVSS) in the phases of a three-phase...
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SunView 深度解读

该研究直接服务于阳光电源的核心业务——光伏逆变器与储能变流器(PCS)在弱电网环境下的并网性能。随着全球电网接入比例提升,弱电网工况下的电压稳定性成为关键挑战。该控制策略可优化阳光电源组串式逆变器及PowerTitan/PowerStack储能系统的控制算法,提升设备在复杂电网故障(如CVSS)下的穿越能力和电能质量。建议研发团队将其引入iSolarCloud智能运维平台的故障分析模型中,并针对弱电网场景优化逆变器的负序电流注入控制,以增强产品在极端电网条件下的市场竞争力。