Fault Analysis and Adaptive Design of Wind Turbine Lubrication System

Cen Haitang,Zhang Tianfang,Tian Wenliang,Zheng Yongdong

Table 2 Fault tree model event

Serial number Event description Serial number Event description A1 Oil temperature anomaly X8 Low viscosity of lubricating oil A2 Oil pressure anomaly X9 Serious wear and tear of the main and passive gear A3 Anomaly of oil level X10 Inhalation of foam or air A4 Poor oil quality X11 Oil road blockage B1 Oil temperature too high X12 High viscosity of lubricating oil B2 Oil temperature too Low X13 Poor heat dissipation B3 Oil pressure too high X14 Electronic component failure B4 Oil pressure too low X15 Power supply voltage anomaly B5 Oil level too high X16 Circuit short circuit or circuit breakage B6 Oil level too low X17 Oil road blockage C1 Mechanical pump failure X18 High viscosity of lubricating oil C2 Electric pump failure X19 Abnormal work of a dragged gear pump C3 Lube oil leakage X20 line fault D1 Mechanical overload X21 Oil pressure too high D2 Motor overheating X22 Overabundance of bubbles in lubricating oil D3 motor overload X23 Seal ring damage D4 Motor does not start X24 Pipe joint loosening D5 Larger vibration noise X25 Lubricating oil pipeline breakage X1 Long term full load operation X26 Overabundance of oil X2 Gear box component damage X27 Insufficient oil X3 Work anomaly of cooling system X28 The viscosity of the lubricating oil is too high to cause misreport X4 Low ambient temperature X29 Long term high temperature lead to lubricating oil X5 Abnormal heating system of lubricating oil X30 Filtering system work exception X6 High viscosity of lubricating oil X31 Lubricating oil modification emulsification X7 Filter system bypass valve pressure is too high