Optimization of rectification control program for flood sluice gate of Shenxigou Hydropower Station

Owing to the performance improvement of the gate opening detection device and PLC, the overflow structure layout, in which double lifting point hydraulic hoist is used to open the radial gate, has been widely applied in large modern hydraulic structures. However, the strict requirement for rectification and control accuracy as well as fault diagnosis and treatment hinders its further application in a certain degree. To improve the automatic level of the flood discharge gate and ensure the safe operation of the overflow structures of Shenxigou Hydropower Station, the rectification and control principle for the radial gate system of double lifting point hydraulic hoist is researched in combination with the overhaul practice of the gate system, and in turn the calculation program of PLC are optimized. The practice show that the optimized control program is successful, which can effectively eliminate the faults of gate system.