Discussion on Electrical Design of the Pumping Station in Chaohu City Yangtze River Water Supply Project

The pumping station of the Chaohu City Yangtze River Water Supply Project is located on the outer beach of the Yangtze River embankment in He County, Ma’anshan City, with a total installed capacity of 6,720 kW. Considering equipment layout and flood season protection requirements, a double-caisson configuration is adopted, resulting in severely constrained dimensions for the electrical equipment rooms. In response to these characteristics, this paper elaborates on the selection schemes for main transformers, high-voltage switchgear, frequency converters, and other critical equipment. It also outlines the cable routing plan for the pumping station, providing a reference for future electrical designs of caisson-based pumping stations.