Research Article
Interaction of Transformer Oil Parameters on Each Other and on Transformer Health Index Using Curve Estimation Regression Method
Table 11
Comparison of five regression methods to predict the relationship between acidity and C2H2 parameters of transformer.
| | Equation | Model summary | Parameter estimates | | R-Square | F | df1 | df2 | Sig | Constant | b1 | b2 | b3 |
| | Cubic | 0.111 | 4.832 | 3 | 116 | 0.003 | 0.064 | 0.005 | 0.005 | 0.000 | | Compound | 0.002 | 0.210 | 1 | 118 | 0.648 | 0.049 | 1.021 | — | — | | Growth | 0.002 | 0.210 | 1 | 118 | 0.648 | -3.019 | 0.021 | — | — | | Exponential | 0.002 | 0.210 | 1 | 118 | 0.648 | 0.049 | 0.021 | — | — | | Logistic | 0.002 | 0.210 | 1 | 118 | 0.648 | 20.473 | 0.980 | — | — |
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Dependent variable: acidity; independent variable: C2H2.
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