Using Simplified Models to Assist Fault Detection and Diagnosis in Large Hydrogenerators

Figure 4

Pads clearances distribution (m) in the upper journal bearing of an LHG: (a) nominal: clearance condition A, blue circle; (b) measured at 0 MW: condition B, closed curve in green; (c) simulated at 700 MW: condition C, crossed ellipse in orange; (d) measured at 700 MW: condition D, outer closed curve in red.