Line - Outputs

Output attributes are calculated by the optimization solver or power flow analysis. These values are read-only and represent the results of network calculations.

Basic

Attribute	Data Type	Unit	Default	Required	Storage Type	Description
sub_network	string	n/a	n/a	No	static	Name of connected sub-network to which line belongs. This attribute is set by PyPSA.

Electrical

Attribute	Data Type	Unit	Default	Required	Storage Type	Description
p0	float	MW	0	No	timeseries	active power at bus0 (positive if power flows from bus0 to bus1)
p1	float	MW	0	No	timeseries	active power at bus1 (positive if power flows from bus1 to bus0)
q0	float	MVar	0	No	timeseries	reactive power at bus0
q1	float	MVar	0	No	timeseries	reactive power at bus1
x_pu	float	per unit	0	No	static	Per unit series reactance calculated from the series reactance (x) and the nominal voltage (v_nom) of the connected buses.
r_pu	float	per unit	0	No	static	Per unit series resistance calculated from the series resistance (r) and the nominal voltage (v_nom) of the connected buses.
g_pu	float	per unit	0	No	static	Per unit shunt conductance calculated from the shunt conductance (g) and the nominal voltage (v_nom) of the connected buses.
b_pu	float	per unit	0	No	static	Per unit shunt susceptance calculated from the shunt susceptance (b) and the nominal voltage (v_nom) of the connected buses.
x_pu_eff	float	per unit	0	No	static	Effective per unit series reactance for linear power flow
r_pu_eff	float	per unit	0	No	static	Effective per unit series resistance for linear power flow

Capacity

Attribute	Data Type	Unit	Default	Required	Storage Type	Description
s_nom_opt	float	MVA	0	No	static	Optimised nominal apparent power (s_nom) from capacity expansion optimization.

Costs

Attribute	Data Type	Unit	Default	Required	Storage Type	Description
mu_upper	float	currency/MVA	0	No	timeseries	Shadow price of upper nominal apparent power (s_nom) limit
mu_lower	float	currency/MVA	0	No	timeseries	Shadow price of lower nominal apparent power (s_nom) limit