← 返回

不平衡电压跌落下的光伏电站各相电流独立控制及过电压抑制策略

Individual Phase Current Control With the Capability to Avoid Overvoltage in Grid-Connected Photovoltaic Power Plants Under Unbalanced Voltage Sags

语言:

中文摘要

本文提出了一种三相电压源逆变器在不平衡电压跌落下的各相独立电流控制策略,以满足光伏电站的并网规范。该方法通过注入无功电流支撑电网电压,同时有效避免了非故障相的过电压问题,提升了光伏电站故障期间的电网适应性与运行稳定性。

English Abstract

Independent current control of each phase of a three-phase voltage source inverter under unbalanced voltage sags is proposed to effectively meet grid code requirements for grid-connected photovoltaic power plants (GCPPPs). Under current grid codes, GCPPPs should support grid voltages by injecting reactive currents during voltage sags. Such injection must not allow the grid voltages of the nonfault...
S

SunView 深度解读

该研究直接针对光伏逆变器在复杂电网环境下的故障穿越能力,与阳光电源的核心业务高度契合。对于组串式逆变器和集中式逆变器而言,在不平衡电网故障下实现各相独立控制,能有效提升产品在弱电网及复杂故障场景下的可靠性,避免因过压保护导致的脱网,从而满足全球主要市场的严苛并网标准(如欧洲及中国GB/T标准)。建议研发团队将该控制算法集成至iSolarCloud智能运维平台及逆变器控制固件中,以优化光伏电站的故障响应性能,提升产品竞争力。