Transmission MVA Base

Units:	-
Default Value:	100
Validation Rule:	≥0
Description:	MVA base for AC line parameters.

Transmission MVA Base is used to scale the per unit (p.u.) reactance and resistance back to megawatt values. By default, the MVA base is 100, i.e. a flow of 100 MW is equivalent to a 1 p.u. flow. For example, a 250MW, 275KV transmission line may have a resistance in the order of 0.02 p.u. and a reactance in the order of 0.05 p.u. using a 100 MVA base. Internally, a Voltage Base of 1kV is assumed and these p.u. figures are scaled using the MVA base so that modelled flows and losses are in megawatts.