The settings in this tab are used to configure the simulation timestep, required parameters and execution for powerflow calculation, and parameters for dynamic simulation solver. For every configuration changed, click Apply before proceeding.
Timestep (seconds)
Regardless of the execution mode, Powerflow calculation or Dynamic simulation, a valid timestep must be defined in this field.
Ensure the Simulink model is set to use a fixed timestep (under Simulation > Model Configuration parameters > Solver).
Powerflow calculation
Initialization method  There are three initialization options available for powerflow calculation in the dropdown menu.


Power mismatch (max p.u.)  Termination condition based on the tolerance of the mismatch equations (default 1E8). The algorithm terminates if the norm of the mismatch equation becomes smaller than the specified tolerance. 
Max number of NR iterations  Maximum number of iterations allowed for NewtonRaphson to converge (default 100). If the algorithm does not converge once this limit is reached, ePHASORSIM stops and the error message “Powerflow didn’t converge” is displayed. 
Execute  Runs the power flow calculation. 
Execute and export report  Runs the power flow and also writes the results into following output files in a folder with name follows the format: '[XLS file name].PowerFlow'.

Dynamic simulation
Start from Powerflow 


Number of partitions  The solver can automatically partition the admittance matrix into a block bordered diagonal format to perform parallel simulation. This uses a graph partitioning method where the number of desired blocks is defined by this parameter (a positive integral number). Depending on the power system’s topology the value for this parameter varies. An ideal value for realtime performance can be sought using trial and error analysis. As a rule of thumb, the number of partitions should be 57 times the number of available CPU cores. For example, with 10 cores available, the ideal value is likely between 50 and 70. Refer to Parallel Simulation for more details. 
Export admittance matrix  Writes the network’s admittance matrix as a CSV file with a name that follows the format: '[XLS file name]_Y.csv'. 
Need more logs?  Displays instruction to get more logs and verbose output. 
Optimize number of threads (Windows only)  Finds the optimal number of threads (in terms of runtime performance) to be used for the parallelization of both network solver and integration of genunits. Refer to Parallel Simulation for more details. 
Note:
 'XLS file name' refers to the name of the Excel file configured in the Network data tab.