内蒙古电力技术2025，Vol.43Issue(3)：44-53,10.DOI:10.19929/j.cnki.nmgdljs.2025.0034
沙戈荒风电场经柔性低频送出线路保护方案
Protection Scheme of Desert-Gobi-Wasteland Wind Farm Through Flexible Low-Frequency Transmission Lines
摘要
Abstract
Aiming at the problem that the fault current characteristics on both sides of the AC line of desert-gobi-wasteland wind power system are special,and the traditional current differential protection has the risk of rejection,a new pilot protection scheme based on improved Smith-Waterman(SW)algorithm is proposed,which is verified by hardware-in-the-loop(HIL)experiment.The results show that the proposed scheme can accurately judge the internal and external faults,and has strong anti-transition resistance interference ability.It still has good adaptability to the case where there is a 15%measurement error in TA or 25 dB Gaussian noise interference,and can meet the requirements of flexible low-frequency transmission line protection scheme.关键词
沙戈荒风电场/柔性低频输电/纵联保护/故障特征/改进Smith-Waterman算法Key words
desert-gobi-wasteland wind farm/flexible low-frequency transmission/pilot protection/fault characteristics/improved Smith-Waterman(SW)algorithm分类
信息技术与安全科学引用本文复制引用
刘至圣,徐嘉豪,张粲,杨茜茜,孙琳..沙戈荒风电场经柔性低频送出线路保护方案[J].内蒙古电力技术,2025,43(3):44-53,10.基金项目
中央高校基本科研业务费重点领域交叉创新项目"基于知识和数据混合驱动的新能源电力系统保护新原理研究"(2022JCCXJD01) （2022JCCXJD01）
中国矿业大学(北京)大学生创新训练项目"高压输电线路差动保护新方法研究"(202304040) （北京）
