Research on Fault Diagnosis of Launch Vehicle’s Power Transformation and Transmission System Based on Big Data

Table 1

Names of status parameters.

State parameter name	Symbol
Porcelain set of creepage	W1
External insulation configuration	W2
Porcelain insulation damage	W3
Oil level indicator	W4
Oil leakage check	W5
Casing grounding	W6
Lead wire at the end of the screen	W7
Infrared temperature measurement	W8
The main insulation dielectric loss and capacitance	W9
Dielectric loss at the end of screen and capacitance	W10
The main insulation resistance	W11
Insulation resistance at the end of screen	W12
Dissolved gas analysis in oil	W13
Outside the insulating oil	W14
Oil dielectric loss	W15
Insulating oil water-soluble acid	W16
Insulation oleic acid value	W17
Insulating oil flash point	W18
Insulating oil moisture	W19
Insulating oil interfacial tension (below 25 degrees Celsius)	W20
Insulating oil breakdown voltage	W21
Insulating oil volume resistance (below 90 degrees Celsius)	W22
Insulating oil sludge and sediment	W23
Insulating oil corrosive sulfur	W24
The carbamate insulating oil	W25
Insulating oil charged tendency	W26