Table 5 Corresponding interval for correlation analysis under the different environment temperatures.
Environment temperatures (°C) | Dissolved gas index | Upper oil temperature (°C) | Winding temperature (°C) |
|---|---|---|---|
− 10 | \(\left[ 0.356, 0.386 \right]\) | \(\left[ 29.856, 30.003 \right]\) | \(\left[ 39.310, 39.635 \right]\) |
0 | \(\left[ 0.508, 0.518 \right]\) | \(\left[ 39.017, 39.255 \right]\) | \(\left[ 39.268, 39.473 \right]\) |
10 | \(\left[ 0.627, 0.634 \right]\) | \(\left[ 48.135, 48.266 \right]\) | \(\left[ 50.364, 50.471 \right]\) |
20 | \(\left[ 0.756, 0.772 \right]\) | \(\left[ 59.024, 59.318 \right]\) | \(\left[ 61.087, 61.352 \right]\) |
30 | \(\left[ 0.883, 0.904 \right]\) | \(\left[ 71.267, 73.586 \right]\) | \(\left[ 83.281, 85.636 \right]\) |
40 | \(\left[ 0.991, 0.996 \right]\) | \(\left[ 95.558, 98.215 \right]\) | \(\left[ 101.0386, 103.659 \right]\) |
