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非对称电网故障下三相四线制逆变器功率注入能力提升的灵活控制策略

Flexible Control Strategy for Enhancing Power Injection Capability of Three-Phase Four-Wire Inverter During Asymmetrical Grid Faults

语言:

中文摘要

三相四线制逆变器因具备零序控制能力,非常适用于低压分布式电网。然而,现有研究对故障期间跟网型逆变器的功率振荡控制灵活性及功率注入能力讨论不足。本文通过在四线制系统中引入零序瞬时功率,提出了一种能够提升故障期间功率注入能力的灵活控制策略。

English Abstract

A three-phase four-wire inverter is highly suitable for low-voltage distributed grids owing to its zero sequence control; however, essential aspects of grid-following inverters during faults, such as the power oscillation control flexibility and power injection capability, are rarely discussed in detail. Thus, by introducing zero sequence instantaneous power into a four-wire system, this article p...
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SunView 深度解读

该研究针对非对称电网故障下的功率控制,对阳光电源的组串式逆变器(如SG系列)及户用逆变器在弱电网或复杂配电网环境下的并网稳定性具有重要参考价值。特别是在低压分布式场景中,通过引入零序控制优化,能有效提升逆变器在电网故障期间的支撑能力,满足日益严格的并网标准(如LVRT/HVRT)。建议研发团队关注该零序瞬时功率控制方法,将其集成至iSolarCloud智能运维平台的故障诊断算法中,以提升设备在极端工况下的可靠性与电网适应性。