modelNominal

Units and nominal values

Information

'Nominal' values that are used to define 'base'-values in the case where input is in 'pu'-units

The parameter 'units' allows choosing between SI ('Amp Volt') and pu ('per unit') for input-parameters of components and output-variables of meters.
The default setting is 'pu'.

pu ('per unit'):

  V_base = V_nom
  S_base = S_nom
  R_base = V_nom*V_nom/S_nom
  I_base = S_nom/V_nom

SI ('Amp Volt'):

  V_base = 1
  S_base = 1
  R_base = 1
  I_base = 1

Note that the choice between SI and pu does not affect state- and connector variables. These remain always in SI-units. It only affects input of parameter values and output variables.

Parameters

Type	Name	Default	Description
Parameter Scaling
Boolean	puUnits	true	= true, if scaled with nom. values (pu), else scaled with 1 (SI)
Nominal
SI.Voltage	V_nom	1	nominal Voltage (= base for pu)
SI.ApparentPower	S_nom	1	nominal Power (= base for pu)