Simulations of Transformer Inrush Current by Using BDF-Based Numerical Methods

Table 1

Stiffness ratios and stiffness indexes of the system.

Model 1	1.508⋅10^6≤𝜁𝑗,𝑘≤1.596⋅10^6
	1.965⋅10^4≤𝜉𝑗,𝑘≤4.949⋅10^4
Model 2	0.964⋅10^6≤𝜁𝑗,𝑘≤3.775⋅10^6
	1.256⋅10^4≤𝜉𝑗,𝑘≤1.183⋅10^7
Model 3	4.521⋅10^6≤𝜁𝑗,𝑘≤4.784⋅10^6
	4.622⋅10^4≤𝜉𝑗,𝑘≤1.566⋅10^7