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, coords=None, **kwargs)

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

alternate Text

Result Parameters

net.res_bus

Parameter

Datatype

Explanation

vm_pu

float

voltage magnitude [p.u]

va_degree

float

voltage angle [degree]

p_mw

float

resulting active power demand [MW]

q_mvar

float

resulting reactive power demand [Mvar]

The power flow bus results are defined as:

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

net.res_bus_3ph

Parameter

Datatype

Explanation

vm_a_pu

float

voltage magnitude:Phase A [p.u]

va_a_degree

float

voltage angle:Phase A [degree]

vm_b_pu

float

voltage magnitude:Phase B [p.u]

va_b_degree

float

voltage angle:Phase B [degree]

vm_c_pu

float

voltage magnitude:Phase C [p.u]

va_c_degree

float

voltage angle:Phase C [degree]

p_a_mw

float

resulting active power demand:Phase A [MW]

q_a_mvar

float

resulting reactive power demand:Phase A [Mvar]

p_b_mw

float

resulting active power demand:Phase B [MW]

q_b_mvar

float

resulting reactive power demand:Phase B [Mvar]

p_c_mw

float

resulting active power demand:Phase C [MW]

q_c_mvar

float

resulting reactive power demand:Phase C [Mvar]

The power flow bus results are defined as:

\begin{align*} vm\_pu_{phase} &= \lvert \underline{V_{phase}}_{bus} \rvert \\ va\_degree_{phase} &= \angle \underline{V_{phase}}_{bus} \\ p\_mw_{phase} &= Re(\sum_{n=1}^N \underline{S_{phase}}_{bus, n}) \\ q\_mvar_{phase} &= Im(\sum_{n=1}^N \underline{S_{phase}}_{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_mw

float

resulting active power demand [MW]

q_mvar

float

resulting reactive power demand [Mvar]

Note

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