Automatic water level control method adopting integrated drainage pumping station sets for precise closure

The invention discloses an automatic water level control method adopting integrated drainage pump station sets for precise closure. An automatic water level control system adopting the integrated drainage pump station sets for precise closure is adopted for regulation and control, and comprises but is not limited to a closure well, the first pump station set, the second pump station set, a gratingwell, a CSO storage pond, a PLC control station and a sewage treatment plant, wherein n water pumps for lifting to a municipal sewage pipe are arranged in a tank body of the first pump station set and called as water pumps A, and n water pumps for lifting to the CSO storage pond and are arranged in a tank body of the second pump station set and called as water pumps B. By means of the water levelcontrol method, precise closure can be achieved. That is, sewage is precisely intercepted to the municipal sewage pipe in the dry season, and in the rainy season, part of mixed sewage is precisely intercepted to the municipal