轴流转桨式水轮机组甩负荷低频灭磁现象分析及优化研究  

Analysis and Optimization of Low Frequency Deexcitation Phenomenon of Kaplan Turbine during Load Rejection

作　　者：王伟刚 寇林 雷旭乐 陈余土 巴莉 任亚娜 WANG Wei-gang;KOU lin;LEI Xu-le(Lanzhou Longneng Power Technology Co.,Ltd;Xi’an Thermal Power Research Institute Co.,Ltd.)

机构地区：[1]兰州陇能电力科技有限公司,甘肃兰州730070 [2]西安热工研究院有限公司

出　　处：《电站系统工程》2024年第2期69-70,72,共3页Power System Engineering

摘　　要：针对某电站在投运期间机组甩负荷出现低频灭磁的问题,通过对轴流转桨式机组甩负荷出现低频现象进行分析,同时通过优化导叶最小空载开度限制的方法避免了轴流转桨式机组甩负荷期间低频现象的发生,同时对优化后的机组进行现场试验,验证了此方法针对轴流转桨式机组甩负荷低频问题的有效性,为机组安全稳定运行提供技术支持。Aiming at the problem of low frequency deexcitation during load rejection of a power station,the low-frequency phenomenon during load rejection of Kaplan turbine is analyzed,and avoids the low-frequency phenomenon during load rejection by optimizing the minimum no-load opening limit of guide vane.At the same time,the field test of the optimized unit is carried out.The effectiveness of this method for low frequency during load rejection of Kaplan turbine is verified,which provides technical support for turbine’s safe and stable operation.

关 键 词：轴流转桨式机组 甩负荷 低频现象 安全稳定 

分 类 号：TK730.7[交通运输工程—轮机工程]