Is there a parameter or variable in ANDES which holds the updated time step value?

[SinghAS18]

I'm running a simulation. My time step is 1s.
After some time, due to some operations, I get an error that time step is reduced to 0 and simulation is crashed.

Is there a parameter or variable in ANDES which holds the updated time step value?
The reason of this question is, I want to monitor the time step value, and if it reduces to some extent, I want to perform certain operations.

[cuihantao]

It shrinks to zero because the simulation cannot converge. The system may be small-signal unsable, or you imposed a very severe fault for which no power flow can be solved.

The step size should be kept in dae.h. there is a calc_h function for calculating the step size -- search in tds.py and daeint.py. But you won't be able to solve the problem by changing the step size, due to the root cause explained at the beginning.

[SinghAS18]

Thanks Dr. Cui

[SinghAS18]

Thanks Dr. Cui for your help, it worked.