Topics about hydropower plant retrofit, equipment replacement, spare parts support, modernization, and long-term service.
A hydropower unit cannot complete its automatic operating sequence without dependable information about rotational speed and frequency. The control system needs to know whether the unit is stationary, accelerating, approaching synchronous speed, operating normally or decelerating after shutdown. However, a speed signal device should not be viewed as a simple display instrument. Its measured values,…
A hydropower control system retrofit requires more than replacing an old cabinet. This article explains how to evaluate existing equipment, hydraulic controls, speed signals, system interfaces, operating modes, testing requirements, and long-term maintenance before defining the retrofit scope.
NSD Electric completed the localization retrofit of the main distributing valve at Xiaowan Hydropower Station, supporting the independent upgrade of key hydraulic components for high-head, large-capacity hydropower units.