def add_test_shunt(net):
b1, b2, ln = add_grid_connection(net, zone="test_shunt")
pz = 120
qz = -1200
# one shunt at a bus
pp.create_shunt_as_capacitor(net,
b2,
q_kvar=1200,
loss_factor=0.1,
vn_kv=22.,
step=2)
# add out of service shunt shuold not change the result
pp.create_shunt(net, b2, p_kw=pz, q_kvar=qz, in_service=False)
return net
def update_pandapower(
self,
net: pandapowerNet,
name: str,
bus: str,
):
"""Update a pandapower model by adding the capacitor itself.
Args:
net: a pandapower network model.
name: name of the external grid.
bus: the bus to which the external grid is attached.
"""
bus_idx = pp.get_element_index(net, "bus", bus)
pp.create_shunt_as_capacitor(
net,
name=name,
bus=bus_idx,
q_mvar=self.q_mvar,
loss_factor=self.loss_factor,
)
def test_convenience_create_functions():
net = pp.create_empty_network()
b1 = pp.create_bus(net, 110.)
b2 = pp.create_bus(net, 110.)
b3 = pp.create_bus(net, 20)
pp.create_ext_grid(net, b1)
pp.create_line_from_parameters(net, b1, b2, length_km=20., r_ohm_per_km=0.0487,
x_ohm_per_km=0.1382301, c_nf_per_km=160., max_i_ka=0.664)
l0 = pp.create_load_from_cosphi(net, b2, 10, 0.95, "underexcited", name="load")
pp.runpp(net, init="flat")
assert net.load.p_mw.at[l0] == 9.5
assert net.load.q_mvar.at[l0] > 0
assert np.sqrt(net.load.p_mw.at[l0] ** 2 + net.load.q_mvar.at[l0] ** 2) == 10
assert np.isclose(net.res_bus.vm_pu.at[b2], 0.99990833838)
assert net.load.name.at[l0] == "load"
sh0 = pp.create_shunt_as_capacitor(net, b2, 10, loss_factor=0.01, name="shunt")
pp.runpp(net, init="flat")
assert np.isclose(net.res_shunt.q_mvar.at[sh0], -10.043934174)
assert np.isclose(net.res_shunt.p_mw.at[sh0], 0.10043933665)
assert np.isclose(net.res_bus.vm_pu.at[b2], 1.0021942964)
assert net.shunt.name.at[sh0] == "shunt"
sg0 = pp.create_sgen_from_cosphi(net, b2, 5, 0.95, "overexcited", name="sgen")
pp.runpp(net, init="flat")
assert np.sqrt(net.sgen.p_mw.at[sg0] ** 2 + net.sgen.q_mvar.at[sg0] ** 2) == 5
assert net.sgen.p_mw.at[sg0] == 4.75
assert net.sgen.q_mvar.at[sg0] > 0
assert np.isclose(net.res_bus.vm_pu.at[b2], 1.0029376578)
assert net.sgen.name.at[sg0] == "sgen"
tol = 1e-6
base_z = 110 ** 2 / 100
sind = pp.create_series_reactor_as_impedance(net, b1, b2, r_ohm=100, x_ohm=200, sn_mva=100)
assert net.impedance.at[sind, 'rft_pu'] - 100 / base_z < tol
assert net.impedance.at[sind, 'xft_pu'] - 200 / base_z < tol
tid = pp.create_transformer_from_parameters(net, hv_bus=b2, lv_bus=b3, sn_mva=0.1, vn_hv_kv=110,
vn_lv_kv=20, vkr_percent=5, vk_percent=20,
pfe_kw=1, i0_percent=1)
pp.create_load(net, b3, 0.1)
assert net.trafo.at[tid, 'df'] == 1
pp.runpp(net)
tr_l = net.res_trafo.at[tid, 'loading_percent']
net.trafo.at[tid, 'df'] = 2
pp.runpp(net)
tr_l_2 = net.res_trafo.at[tid, 'loading_percent']
assert tr_l == tr_l_2 * 2
net.trafo.at[tid, 'df'] = 0
with pytest.raises(UserWarning):
pp.runpp(net)
def create_network():
network = pp.create_empty_network()
sn_vn_transformer_data = {
"sn_mva": 1,
"vn_hv_kv": 20,
"vn_lv_kv": 0.4,
"vk_percent": 5,
"vkr_percent": 1.1,
"pfe_kw": 1.95,
"i0_percent": 0.27,
"shift_degree": 0
}
pp.create_std_type(network,
sn_vn_transformer_data,
"SN/NN 1MVA",
element='trafo')
slack_bus = pp.create_bus(network, vn_kv=110, name="Slack Bus")
busNodes = []
lowVoltageBusNodes = []
pp.create_ext_grid(network,
bus=slack_bus,
vm_pu=1.01,
name="Grid Connection")
mediumVoltageBusNode = pp.create_bus(network,
vn_kv=20,
name="MV slack side")
pp.create_transformer(network,
hv_bus=slack_bus,
lv_bus=mediumVoltageBusNode,
std_type="40 MVA 110/20 kV",
name="VN/SN Transformer")
for i in range(0, 100):
busNodes.append(
pp.create_bus(network, vn_kv=20, name="Bus_" + str(i + 1)))
lowVoltageBusNodes.append(
pp.create_bus(network,
vn_kv=0.4,
name="LowVoltageBus_" + str(i + 1)))
pp.create_load(network,
bus=lowVoltageBusNodes[i],
p_mw=0.14,
q_mvar=0.05,
name="Load_" + str(i + 1))
pp.create_transformer(network,
hv_bus=busNodes[i],
lv_bus=lowVoltageBusNodes[i],
std_type="SN/NN 1MVA",
name="Transformer_" + str(i + 1))
pp.create_line(network,
from_bus=mediumVoltageBusNode,
to_bus=busNodes[0],
length_km=0.2,
name="Line_0",
std_type="NA2XS2Y 1x150 RM/25 12/20 kV")
for i in range(0, 99):
pp.create_line(network,
from_bus=busNodes[i],
to_bus=busNodes[i + 1],
length_km=0.6,
name="Line_" + str(i + 1),
std_type="NA2XS2Y 1x150 RM/25 12/20 kV")
# Add capacitors with regulating switches
pp.create_bus(network, vn_kv=20, name="Bus_Cap1")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_13'),
pp.get_element_index(network, "bus", 'Bus_Cap1'),
et="b",
closed=False,
type="LBS",
name="CapSwitch1")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap1'),
0.125,
0,
name="Cap1")
pp.create_bus(network, vn_kv=20, name="Bus_Cap2")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_39'),
pp.get_element_index(network, "bus", 'Bus_Cap2'),
et="b",
closed=False,
type="LBS",
name="CapSwitch2")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap2'),
0.8,
0,
name="Cap2")
pp.create_bus(network, vn_kv=20, name="Bus_Cap3")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_85'),
pp.get_element_index(network, "bus", 'Bus_Cap3'),
et="b",
closed=False,
type="LBS",
name="CapSwitch3")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap3'),
0.125,
0,
name="Cap3")
pp.create_bus(network, vn_kv=20, name="Bus_Cap4")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_28'),
pp.get_element_index(network, "bus", 'Bus_Cap4'),
et="b",
closed=False,
type="LBS",
name="CapSwitch4")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap4'),
3,
0,
name="Cap4")
pp.create_bus(network, vn_kv=20, name="Bus_Cap5")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_59'),
pp.get_element_index(network, "bus", 'Bus_Cap5'),
et="b",
closed=False,
type="LBS",
name="CapSwitch5")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap5'),
0.25,
0,
name="Cap5")
pp.create_bus(network, vn_kv=20, name="Bus_Cap6")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_70'),
pp.get_element_index(network, "bus", 'Bus_Cap6'),
et="b",
closed=False,
type="LBS",
name="CapSwitch6")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap6'),
0.8,
0,
name="Cap6")
pp.create_bus(network, vn_kv=20, name="Bus_Cap7")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_48'),
pp.get_element_index(network, "bus", 'Bus_Cap7'),
et="b",
closed=False,
type="LBS",
name="CapSwitch7")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap7'),
0.25,
0,
name="Cap7")
pp.create_bus(network, vn_kv=20, name="Bus_Cap8")
pp.create_switch(network,
pp.get_element_index(network, "bus", 'Bus_95'),
pp.get_element_index(network, "bus", 'Bus_Cap8'),
et="b",
closed=False,
type="LBS",
name="CapSwitch8")
pp.create_shunt_as_capacitor(network,
pp.get_element_index(network, "bus",
'Bus_Cap8'),
0.25,
0,
name="Cap8")
return network
pp.create_shunt(net, b2, p_kw=pz / 2, q_kvar=qz / 2)
return net
def add_test_two_open_switches_on_deactive_line(net):
b1, b2, l1 = add_grid_connection(net,
zone="two_open_switches_on_deactive_line")
b3 = pp.create_bus(net, vn_kv=20.)
l2 = create_test_line(net, b2, b3, in_service=False)
create_test_line(net, b3, b1)
pp.create_switch(net, b2, l2, et="l", closed=False)
pp.create_switch(net, b3, l2, et="l", closed=False)
return net
if __name__ == '__main__':
net = pp.create_empty_network()
b1, b2, ln = add_grid_connection(net, zone="test_shunt")
pz = 120
qz = -1200
# one shunt at a bus
pp.create_shunt_as_capacitor(net,
b2,
q_kvar=1200,
loss_factor=0.1,
vn_kv=20.,
step=1)
# add out of service shunt shuold not change the result
pp.create_shunt(net, b2, p_kw=pz, q_kvar=qz, in_service=False)
# add out of service shunt shuold not change the result
pp.runpp(net)