Volume 3,Issue 2
首波开断技术在新能源电压暂降治理中的应用与工程实践
【目的】为解决新能源风电等连续型企业因电压暂降引发的敏感设备停运问题，避免大规模停产事故。【方法】根据研判，电压暂降问题核心在于传统故障切除时间远超设备耐受极限，提出了首波开断技术。通过涡流驱动快速开关、高速DSP 识别技术及限流阻抗构成系统，短路时快速开关将电流导向限流阻抗，15 ms 内完成故障隔离。以某110 kV 供配电系统为实例，设计了应用方案，实现了母线电压维持与故障快速切除。【结果】在新能源风电项目首次应用验证：①故障切除时间缩短至15 ms 内，母线电压维持在90% 额定值；②短路持续时间从0.15 s 降至15ms，热效降低，电缆截面需求减小；③限制短路电流幅值，保护主变等设备免受冲击；④确保无故障支路敏感负载连续运行，彻底消除电压暂降导致的连锁停产。【结论】首波开断技术通过极速故障隔离和电压维持，从根本上解决了电压暂降问题。其高效性、可靠性和经济性为新能源风电、石化等连续型生产企业避免重大经济损失，具备工程推广价值。
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