Research and Progress on Method of Air Gap Monitoring of Stator and Rotor of Hydro-Generator Units

With the continuous advancement of hydropower technology, the efficiency and stability of hydraulic turbines have become a key research focus. In view of the fact that the control of the distance between the rotor and the stator in the core part of the hydrogenerator in China during the installation process (hereinafter referred to as the air gap) is very important, there are limitations and dangers in the manual plug-in method for detecting the air gap, the reference point measurement method needs to consume a lot of manpower and material resources, and the sensor monitoring method has the shortcomings of high cost. Therefore, a better method for detecting the air gap is urgently needed, so a method for measuring the air gap of the stator rotor of the turbine based<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i</sup> on point cloud imaging technology is summarized, and the in-depth research is carried out to make the air gap detection more convenient, faster and more accurate.