A network in pandapower is represented in a pandapowerNet object, which is a collection of pandas Dataframes. Each dataframe in a pandapowerNet contains the information about one pandapower element, such as line, load transformer etc.
We consider the following simple 3-bus example network as a minimal example:
This network can be created in pandapower as follows:
import pandapower as pp
#create empty net
net = pp.create_empty_network()
#create buses
b1 = pp.create_bus(net, vn_kv=20., name="Bus 1")
b2 = pp.create_bus(net, vn_kv=0.4, name="Bus 2")
b3 = pp.create_bus(net, vn_kv=0.4, name="Bus 3")
#create bus elements
pp.create_ext_grid(net, bus=b1, vm_pu=1.02, name="Grid Connection")
pp.create_load(net, bus=b3, p_kw=100, q_kvar=50, name="Load")
#create branch elements
tid = pp.create_transformer(net, hv_bus=b1, lv_bus=b2, std_type="0.4 MVA 20/0.4 kV",
name="Trafo")
pp.create_line(net, from_bus=b2, to_bus=b3, length_km=0.1, name="Line",
std_type="NAYY 4x50 SE")
Note that you do not have to calculate any impedances or tap ratio for the equivalent circuit, this is handled internally by pandapower according to the pandapower transformer model. The standard type library allows comfortable creation of line and transformer elements.
The pandapower representation now looks like this:
Running a Power Flow
A powerflow can be carried out with the runpp function:
pp.runpp(net)
When a power flow is run, pandapower combines the information of all element tables into one pypower case file and uses pypower to run the power flow. The results are then processed and written back into pandapower:
For the 3-bus example network, the result tables look like this:
pandapower is licensed under a 3-clause BSD-License that can be found in the LICENSE file.