泗洪泵站灯泡式贯流泵机组变频运行同步切换研究

Study on synchronous switchover of variable frequency operation for bulb type tubular flow pump unit in Sihong Pump Station

泗洪泵站是南水北调东线工程的重要节点枢纽工程,也是促进区域协调发展的基础性水利工程,泵站的稳定运行影响着水利工程的安全。在泵站机组变频调速控制系统中,变频器经常需要操作从变频切换至工频状态,结合泗洪泵站运行实践,通过研究设计和应用机组变频运行同步切换,可延长高压变频器及电抗器的寿命,同时提高泵站效率,降低能源单耗。

The Sihong pumping station is an important node and hub project of the eastern route of south-to-north water diversion project,and also a fundamental water conservancy project that promotes regional coordinated development.The stable operation of the pumping station affects the safety of water conservancy projects.In the variable frequency speed control system of the pumping station unit,the frequency converter often needs to switch from the variable frequency to the power frequency state.Combining with the operation practice of the Sihong pumping station,through research,design,and application of synchronous switching of the unit variable frequency operation,the service life of the high-voltage frequency converter and reactor can be extended,while improving the efficiency of the pumping station and reducing energy consumption.