南水北调东线洪泽站反向发电运行方案研究  

Research on Reverse Power Generation Operation Plan for Hongze Station Pumping Station

作　　者：戴景 周伟[2] 戴启璠 王闻通 郭赞赞 万景红 DAI Jing;ZHOU Wei;DAI Oi-fan;WANG Wen-tong;GUO Zan-zan;WAN Jing-hong(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Jiangsu Water Resources Survey and Design Research Institute Co.Ltd.,Yangzhou 225009,China;Jiangsu Province General Irrigation Canal Management,Huai'an 223200,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]江苏省水利勘测设计研究院有限公司,江苏扬州225009 [3]江苏省灌溉总渠管理处,江苏淮安223200

出　　处：《水电能源科学》2018年第12期141-143,140,共4页Water Resources and Power

基　　金：江苏省水利厅科技项目(2017026)

摘　　要：采用模型试验数据换算与数值模拟相结合的方法,分析了南水北调东线洪泽站反向发电运行的可行性及机组的最佳运行方案。结果表明,洪泽站采用反向全速发电方案能够解决发电功能的有无问题,但机组发电效益较低且在尾水管中会产生由涡带引起的低频水压脉动;采用机械变频的发电方案可显著提升机组的发电效益,同时又可明显改善尾水管的内部流动,但在发电水头发生变化时会偏离高效区;电子变频的发电方案能使机组在不同水头时均处于高效区,且优于其他2种方案。By using combination of model test data conversion and numerical simulation,the feasibility of reverse power generation operation of Hongze pumping station on the east routing of South-to-North Water transfer project and the optimal operation plan of the unit were analyzed.Research indicates that the scheme of reverse full-speed power generation for Hongze pumping station can solve the problem of power generation.However,the power generation efficiency of the unit is low and low-frequency water pressure pulsation caused by the vortex belt is generated in the draft tube.The power generation scheme using mechanical frequency conversion can significantly improve the power generation efficiency of the unit.At the same time,the internal flow of the draft tube can be significantly improved.But,it will deviate from the high efficiency zone when the power head changes.Electronic variable frequency power generation scheme enables the unit to be in the high efficiency zone at different heads.

关 键 词：泵站发电 变频 尾水管 水压脉动 

分 类 号：TH313[机械工程—机械制造及自动化]