摘要
天荒坪抽水蓄能电站水泵水轮机为高水头、大容量、高转速、单级单转速双向旋转的混流可逆式机型,其全特性曲线中存在明显的“S”形区域。经现场调试知,当机组在低水头发电空载运行时,极易进入“S”形特性区域,造成机组并网困难、逆功率或甩负荷后不能达到空载稳态。当采用导叶不同步预开装置(MGV装置)后,基本解决了此类问题,增强了机组的运行稳定性。
The pump turbine of Tianhuangping Pumped Storage Power Station is a high head, large capacity and single stage type with a large range of head variation. At low head, it＇ s easy entering＇ S＇ zone causing speed unstable, difficult synchronizing and reversed power afterwards, or un-stable at no-load speed after load rejection. After adopting two misaligned guide vanes（MGV）, this problem is solved and it makes the unit much more stable.
出处
《水力发电学报》
EI
CSCD
北大核心
2006年第6期136-139,135,共5页
Journal of Hydroelectric Engineering
基金
国电华东电网公司科学技术项目(T0305)
