Transformer

List of input parameters

Parameter	Description	Type	Value range	OpenDSS equivalent
name	a custom name	string	-	name
sn_mva*	rated apparent power in MVA	float	> 0	kvas
vn_hv_kv*	rated voltage on high voltage side in kV	float	> 0	kVs
vn_lv_kv*	rated voltage on low voltage side in kV	float	> 0	kVs
vkr_percent*	real part of relative short-circuit voltage in %	float	≥ 0	-
vk_percent*	relative short-circuit voltage in %	float	≥ 0	-
pfe_kw*	iron losses in kW	float	≥ 0	-
i0_percent*	open loop losses in percent of rated current in %"	float	≥ 0	-
shift_degree*	angle shift over the transformer	float		-
vector_group***	Vector group of the transformer; HV side is Uppercase letters and LV side is lower case	string	‘Dyn’,’Yyn’,’Yzn’,’YNyn’	-
vk0_percent***	zero sequence relative short-circuit voltage in %	float	≥ 0	-
vkr0_percent***	real part of zero sequence relative short-circuit voltage in %	float	≥ 0	-
mag0_percent***	zero sequence magnetizing impedance in %	float	≥ 0	-
si0_hv_partial***	distribution of zero sequence leakage impedances for HV sid	float	≥ 0	-
tap_pos	current tap position of the transformer	integer		-
tap_max	maximal allowed tap position	integer		-
tap_min	minimal allowed tap position	integer		-
tap_step_percent	tap step size for voltage magnitude in %	float	≥ 0	-
tap_step_degree	tap step size for voltage angle in degree	float	≥ 0	-
tap_phase_shifter	whether the transformer is an ideal phase shifter	bool		-

*necessary for executing a balanced power flow calculation

***necessary for executing a three phase power flow / single phase short circuit

The exact model and result parameters (for pandapower) are defined in the link below: https://pandapower.readthedocs.io/en/latest/elements/trafo.html