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利用负序下垂控制实现并网微电网中功率变换器的低电压穿越运行

Low-Voltage Ride-Through Operation of Power Converters in Grid-Interactive Microgrids by Using Negative-Sequence Droop Control

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中文摘要

随着微电网渗透率的提高,支撑电力系统稳定性变得至关重要。为确保电网故障期间的稳定运行,微电网需具备辅助服务能力,如低电压穿越(LVRT)。本文提出了一种基于正/负序下垂控制的LVRT策略,以优化故障期间的功率输出与电网支撑能力。

English Abstract

Due to the increasing penetration level of microgrids (MGs), it becomes a critical issue for MGs to help sustaining power system stability. Therefore, ancillary services, such as the low-voltage ride-through (LVRT) capability should be incorporated in MGs in order to guarantee stable operation of the utility grid during grid faults. In this paper, a LVRT control strategy based on positive/negative...
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SunView 深度解读

该研究直接关联阳光电源的核心并网技术。针对电网故障时的LVRT能力,是阳光电源组串式逆变器(如SG系列)和储能变流器(如PowerTitan、PowerStack)在复杂电网环境下实现稳定并网的关键。负序下垂控制策略能够有效抑制故障期间的电流不平衡,提升设备在弱电网或故障工况下的鲁棒性。建议研发团队将此控制逻辑集成至iSolarCloud智能运维平台下的高级控制算法中,以增强产品在应对电网波动时的故障穿越性能,进一步提升阳光电源在全球大型地面电站及微电网项目中的技术竞争力。