Bus¶

Create Function¶

pandapower.create_bus(net, vn_kv, name=None, index=None, geodata=None, type="b", zone=None, in_service=True, max_vm_pu=nan, min_vm_pu=nan)¶

Adds one bus in table net[“bus”].

Busses are the nodes of the network that all other elements connect to.

INPUT:

net (pandapowerNet) - The pandapower network in which the element is created

OPTIONAL:

name (string, default None) - the name for this bus

index (int, default None) - Force a specified ID if it is available. If None, the index one higher than the highest already existing index is selected.

vn_kv (float) - The grid voltage level.

geodata ((x,y)-tuple, default None) - coordinates used for plotting

type (string, default “b”) - Type of the bus. “n” - node, “b” - busbar, “m” - muff

zone (string, None) - grid region

in_service (boolean) - True for in_service or False for out of service

max_vm_pu (float, NAN) - Maximum bus voltage in p.u. - necessary for OPF

min_vm_pu (float, NAN) - Minimum bus voltage in p.u. - necessary for OPF

coords (array, default None, shape= (,2L)) - busbar coordinates to plot the bus with multiple points.: coords is typically a list of tuples (start and endpoint of the busbar) [(x1, y1), (x2, y2)]

OUTPUT:

index (int) - The unique ID of the created element

EXAMPLE:

create_bus(net, name = “bus1”)

Input Parameters¶

net.bus

Parameter	Datatype	Value Range	Explanation
name	string		name of the bus
vn_kv*	float	\(>\) 0	rated voltage of the bus [kV]
type	string	naming conventions: “n” - node “b” - busbar “m” - muff	type variable to classify buses
zone	string		can be used to group buses, for example network groups / regions
max_vm_pu**	float	\(>\) 0	Maximum voltage
min_vm_pu**	float	\(>\) 0	Minimum voltage
in_service*	boolean	True / False	specifies if the bus is in service.

*necessary for executing a power flow calculation
**optimal power flow parameter

Note

Bus voltage limits can not be set for slack buses and will be ignored by the optimal power flow.

net.bus_geodata

Parameter	Datatype	Explanation
x	float	x coordinate of bus location
y	float	y coordinate of bus location

Electric Model¶

Result Parameters¶

net.res_bus

Parameter	Datatype	Explanation
vm_pu	float	voltage magnitude [p.u]
va_degree	float	voltage angle [degree]
p_kw	float	resulting active power demand [kW]
q_kvar	float	resulting reactive power demand [kvar]

The power flow bus results are defined as:

\begin{align*} vm\_pu &= \lvert \underline{V}_{bus} \rvert \\ va\_degree &= \angle \underline{V}_{bus} \\ p\_kw &= Re(\sum_{n=1}^N \underline{S}_{bus, n}) \\ q\_kvar &= Im(\sum_{n=1}^N \underline{S}_{bus, n}) \end{align*}

net.res_bus_est

The state estimation results are put into net.res_bus_est with the same definition as in net.res_bus.

Parameter	Datatype	Explanation
vm_pu	float	voltage magnitude [p.u]
va_degree	float	voltage angle [degree]
p_kw	float	resulting active power demand [kW]
q_kvar	float	resulting reactive power demand [kvar]

Note

All power values are given in the consumer system. Therefore a bus with positive p_kw value consumes power while a bus with negative active power supplies power.