def test_eg_voltage():
""" Testing a very simple network without transformer for voltage
constraints with OPF """
# boundaries:
vm_max = 1.05
vm_min = 0.95
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_gen(net,
1,
p_kw=-100,
controllable=True,
max_p_kw=-5,
min_p_kw=-150,
max_q_kvar=50,
min_q_kvar=-50)
pp.create_ext_grid(net, 0, vm_pu=1.01)
pp.create_load(net, 1, p_kw=20, controllable=False)
pp.create_line_from_parameters(net,
0,
1,
50,
name="line2",
r_ohm_per_km=0.876,
c_nf_per_km=260.0,
max_i_ka=0.123,
x_ohm_per_km=0.1159876,
max_loading_percent=100)
# run OPF
for init in ["pf", "flat"]:
pp.runopp(net, verbose=False, init=init)
assert net["OPF_converged"]
# check and assert result
logger.debug("test_simplest_voltage")
logger.debug("res_gen:\n%s" % net.res_gen)
logger.debug("res_ext_grid:\n%s" % net.res_ext_grid)
logger.debug("res_bus.vm_pu: \n%s" % net.res_bus.vm_pu)
assert net.res_bus.vm_pu.at[0] == net.ext_grid.vm_pu.values
def test_result_index_unsorted():
net = pp.create_empty_network()
b1 = pp.create_bus(net, vn_kv=0.4, index=4)
b2 = pp.create_bus(net, vn_kv=0.4, index=2)
b3 = pp.create_bus(net, vn_kv=0.4, index=3)
pp.create_gen(net, b1, p_kw=-10, vm_pu=0.4)
pp.create_load(net, b2, p_kw=10)
pp.create_ext_grid(net, b3)
pp.create_line(net, from_bus=b1, to_bus=b2, length_km=0.5, std_type="NAYY 4x120 SE")
pp.create_line(net, from_bus=b1, to_bus=b3, length_km=0.5, std_type="NAYY 4x120 SE")
net_recycle = copy.deepcopy(net)
pp.runpp(net_recycle)
pp.runpp(net_recycle, recycle=dict(_is_elements=True, ppc=True, Ybus=True))
pp.runpp(net)
assert nets_equal(net, net_recycle, tol=1e-12)
def base_net():
net = pp.create_empty_network()
pp.create_bus(net, vn_kv=10)
pp.create_bus(net, vn_kv=10)
pp.create_ext_grid(net, 0)
pp.create_load(net, 1, p_mw=0.2, controllable=False)
pp.create_line_from_parameters(net,
0,
1,
50,
name="line",
r_ohm_per_km=0.876,
c_nf_per_km=260.0,
max_i_ka=0.123,
x_ohm_per_km=0.1159876,
max_loading_percent=100 * 690)
pp.runpp(net)
return net
def test_zip_loads_with_voltage_angles():
net = pp.create_empty_network()
b1 = pp.create_bus(net, vn_kv=1.)
b2 = pp.create_bus(net, vn_kv=1.)
pp.create_ext_grid(net, b1)
pp.create_line_from_parameters(net, b1, b2, length_km=1, r_ohm_per_km=0.3,
x_ohm_per_km=0.3, c_nf_per_km=10, max_i_ka=1)
pp.create_load(net, b2, p_kw=2., const_z_percent=0, const_i_percent=100)
pp.set_user_pf_options(net, calculate_voltage_angles=True, init='dc')
pp.runpp(net)
res_load = net.res_load.copy()
net.ext_grid.va_degree = 100
pp.runpp(net)
assert np.allclose(net.res_load.values, res_load.values)
def simple_two_bus():
net = pp.create_empty_network()
b1 = pp.create_bus(net, vn_kv=20.)
b2 = pp.create_bus(net, vn_kv=20.)
pp.create_line(net,
from_bus=b1,
to_bus=b2,
length_km=2.5,
std_type="NA2XS2Y 1x240 RM/25 12/20 kV")
pp.create_ext_grid(net, bus=b2)
pp.create_gen(net,
bus=b1,
p_kw=-1000,
vn_kv=20,
sn_kva=8000,
controllable=True)
pp.runpp(net)
return net
def test_mixed_p_q_pwl():
vm_max = 1.05
vm_min = 0.95
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_gen(net,
1,
p_mw=0.1,
controllable=True,
min_p_mw=0.005,
max_p_mw=0.15,
max_q_mvar=.05,
min_q_mvar=-.05)
pp.create_ext_grid(net, 0)
pp.create_load(net,
1,
p_mw=0.02,
controllable=False,
min_p_mw=0.005,
max_p_mw=0.1,
max_q_mvar=.05,
min_q_mvar=-.05)
pp.create_line_from_parameters(net,
0,
1,
50,
name="line2",
r_ohm_per_km=0.876,
c_nf_per_km=260.0,
max_i_ka=0.123,
x_ohm_per_km=0.1159876,
max_loading_percent=100 * 690)
# testing some combinations
pp.create_pwl_cost(net, 0, "gen", [[-150, 150, 1]])
pp.create_pwl_cost(net, 0, "gen", [[-150, 150, 1]], power_type="q")
pp.runopp(net)
assert net["OPF_converged"]
assert np.allclose(net.res_cost,
net.res_gen.p_mw.values + net.res_gen.q_mvar.values)
def test_3bus():
# 1. Create network
net = pp.create_empty_network()
pp.create_bus(net, name="bus1", vn_kv=1.)
pp.create_bus(net, name="bus2", vn_kv=1.)
pp.create_bus(net, name="bus3", vn_kv=1.)
pp.create_ext_grid(net, 0)
pp.create_line_from_parameters(net, 0, 1, 1, r_ohm_per_km=0.7, x_ohm_per_km=0.2, c_nf_per_km=0,
max_i_ka=1)
pp.create_line_from_parameters(net, 0, 2, 1, r_ohm_per_km=0.8, x_ohm_per_km=0.8, c_nf_per_km=0,
max_i_ka=1)
pp.create_line_from_parameters(net, 1, 2, 1, r_ohm_per_km=1, x_ohm_per_km=0.6, c_nf_per_km=0,
max_i_ka=1)
pp.create_measurement(net, "p", "line", -0.0011, 0.01, 0, 0) # p12
pp.create_measurement(net, "q", "line", 0.024, 0.01, 0, 0) # q12
pp.create_measurement(net, "p", "bus", 0.018, 0.01, 2) # p3
pp.create_measurement(net, "q", "bus", -0.1, 0.01, 2) # q3
pp.create_measurement(net, "v", "bus", 1.08, 0.05, 0) # u1
pp.create_measurement(net, "v", "bus", 1.015, 0.05, 2) # u3
# 2. Do state estimation
success = estimate(net, init='flat')
v_result = net.res_bus_est.vm_pu.values
delta_result = net.res_bus_est.va_degree.values
target_v = np.array([1.0627, 1.0589, 1.0317])
diff_v = target_v - v_result
target_delta = np.array([0., 0.8677, 3.1381])
diff_delta = target_delta - delta_result
assert success
assert (np.nanmax(abs(diff_v)) < 1e-4)
assert (np.nanmax(abs(diff_delta)) < 1e-4)
# Backwards check. Use state estimation results for power flow and check for equality
net.ext_grid.vm_pu = net.res_bus_est.vm_pu.iloc[0]
pp.create_load(net, 0, net.res_bus_est.p_mw.iloc[0], net.res_bus_est.q_mvar.iloc[0])
pp.create_load(net, 1, net.res_bus_est.p_mw.iloc[1], net.res_bus_est.q_mvar.iloc[1])
pp.create_load(net, 2, net.res_bus_est.p_mw.iloc[2], net.res_bus_est.q_mvar.iloc[2])
_compare_pf_and_se_results(net)
def test_cost_mixed():
""" Testing a very simple network for the resulting cost value
constraints with OPF """
# boundaries:
vm_max = 1.05
vm_min = 0.95
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_gen(net, 1, p_kw=-100, controllable=True, max_p_kw=-5, min_p_kw=-150, max_q_kvar=50,
min_q_kvar=-50)
pp.create_ext_grid(net, 0)
pp.create_load(net, 1, p_kw=20, controllable=False, max_q_kvar=50, max_p_kw=100, min_p_kw=50,
min_q_kvar=-50)
pp.create_line_from_parameters(net, 0, 1, 50, name="line2", r_ohm_per_km=0.876,
c_nf_per_km=260.0, max_i_ka=0.123, x_ohm_per_km=0.1159876,
max_loading_percent=100 * 690)
# testing some combinations
pp.create_polynomial_cost(net, 0, "gen", np.array([0, 1, 0]))
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
assert net.res_cost == - net.res_gen.p_kw.values
net.polynomial_cost.c.at[0] = np.array([[1, 0, 0]])
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
assert net.res_cost - net.res_gen.p_kw.values**2 < 1e-5
net.polynomial_cost.c.at[0] = np.array([[1, 0, 1]])
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
assert net.res_cost - net.res_gen.p_kw.values**2 - 1 < 1e-5
net.load.controllable.at[0] = True
pp.runopp(net, verbose=False)
assert net.res_cost - net.res_gen.p_kw.values ** 2 - 1 < 1e-5
pp.create_piecewise_linear_cost(net, 0, "load", np.array([[0, 0], [100, 100]]), type="p")
pp.runopp(net, verbose=False)
assert net.res_cost - net.res_gen.p_kw.values ** 2 - 1 - net.res_load.p_kw.values < 1e-5
def test_net_with_zero_injection():
# @author: AndersLi
net = pp.create_empty_network()
b1 = pp.create_bus(net, name="Bus 1", vn_kv=220, index=1)
b2 = pp.create_bus(net, name="Bus 2", vn_kv=220, index=2)
b3 = pp.create_bus(net, name="Bus 3", vn_kv=220, index=3)
b4 = pp.create_bus(net, name="Bus 4", vn_kv=220, index=4)
pp.create_ext_grid(net, 1) # set the slack bus to bus 1
factor = 48.4 * 2 * np.pi * 50 * 1e-9 # capacity factor
pp.create_line_from_parameters(net, 1, 2, 1, r_ohm_per_km=.0221*48.4,
x_ohm_per_km=.1603*48.4, c_nf_per_km=0.00274/factor, max_i_ka=1)
pp.create_line_from_parameters(net, 2, 3, 1, r_ohm_per_km=.0428*48.4,
x_ohm_per_km=.242*48.4, c_nf_per_km=0.00384/factor, max_i_ka=1)
l3 = pp.create_line_from_parameters(net, 2, 4, 1, r_ohm_per_km=.002*48.4,
x_ohm_per_km=.0111*48.4, c_nf_per_km=0.00018/factor, max_i_ka=1)
pp.create_measurement(net, "v", "bus", 1.063548, .001, b1) # V at bus 1
pp.create_measurement(net, "v", "bus", 1.068342, .001, b3) # V at bus 3
pp.create_measurement(net, "v", "bus", 1.069861, .001, b4) # V at bus 4
pp.create_measurement(net, "p", "bus", -40.0, 1, b1) # P at bus 1
pp.create_measurement(net, "q", "bus", -9.2, 1, b1) # Q at bus 1
# pp.create_measurement(net, "p", "bus", 0, 0.01, b2) # P at bus 2 - not required anymore
# pp.create_measurement(net, "q", "bus", 0, 0.01, b2) # Q at bus 2 - not required anymore
pp.create_measurement(net, "p", "bus", 10.0, 1, b3) # P at bus 3
pp.create_measurement(net, "q", "bus", 1.0, 1, b3) # Q at bus 3
pp.create_measurement(net, "p", "bus", 30.0, 1, b4) # P at bus 4
pp.create_measurement(net, "q", "bus", -0.100, 1, b4) # Q at bus 4
pp.create_measurement(net, "p", "line", 30.100, 1, l3, side="to") # Pline (bus 2 -> bus 4) at bus 4
pp.create_measurement(net, "q", "line", -0.099, 1, l3, side="to") # Qline (bus 2 -> bus 4) at bus 4
success = estimate(net, tolerance=1e-10, zero_injection='auto', algorithm='wls_with_zero_constraint')
assert success
assert np.abs(net.res_bus_est.at[1, 'p_mw']) < 1e-8
assert np.abs(net.res_bus_est.at[1, 'q_mvar']) < 1e-8
net_given_bus = deepcopy(net)
success = estimate(net, tolerance=1e-6, zero_injection="auto")
success_given_bus = estimate(net, tolerance=1e-6, zero_injection=[b2])
assert success and success_given_bus
assert np.allclose(net.res_bus_est.va_degree.values,net_given_bus.res_bus_est.va_degree.values, 1e-3)
assert np.allclose(net.res_bus_est.vm_pu.values,net_given_bus.res_bus_est.vm_pu.values, 1e-3)
def test_two_gens_at_one_bus():
net = pp.create_empty_network()
b1 = pp.create_bus(net, 380)
b2 = pp.create_bus(net, 380)
b3 = pp.create_bus(net, 380)
pp.create_ext_grid(net, b1, 1.02, max_p_kw=0.)
p1 = 800
p2 = 500
g1 = pp.create_gen(net, b3, vm_pu=1.018, p_kw=p1)
g2 = pp.create_gen(net, b3, vm_pu=1.018, p_kw=p2)
pp.create_line(net, b1, b2, 30, "490-AL1/64-ST1A 380.0")
pp.create_line(net, b2, b3, 20, "490-AL1/64-ST1A 380.0")
pp.runpp(net)
assert net.res_gen.p_kw.at[g1] == p1
assert net.res_gen.p_kw.at[g2] == p2
def two_ext_grids_at_one_bus():
net = pp.create_empty_network()
b1 = pp.create_bus(net, vn_kv=110, index=3)
b2 = pp.create_bus(net, vn_kv=110, index=5)
pp.create_ext_grid(net, b1, vm_pu=1.01, index=2)
pp.create_line(net, b1, b2, 1., std_type="305-AL1/39-ST1A 110.0")
pp.create_load(net, bus=b2, p_mw=3.5, q_mvar=1)
pp.create_gen(net, b1, vm_pu=1.01, p_mw=1)
runpp_with_consistency_checks(net)
assert net.converged
# connect second ext_grid to b1 with different angle but out of service
eg2 = pp.create_ext_grid(net,
b1,
vm_pu=1.01,
va_degree=20,
index=5,
in_service=False)
runpp_with_consistency_checks(
net) # power flow still converges since eg2 is out of service
assert net.converged
# error is raised after eg2 is set in service
net.ext_grid.in_service.at[eg2] = True
with pytest.raises(UserWarning):
pp.runpp(net)
# error is also raised when eg2 is connected to first ext_grid through bus-bus switch
b3 = pp.create_bus(net, vn_kv=110)
pp.create_switch(net, b1, b3, et="b")
net.ext_grid.bus.at[eg2] = b3
with pytest.raises(UserWarning):
pp.runpp(net)
# no error is raised when voltage angles are not calculated
runpp_with_consistency_checks(net, calculate_voltage_angles=False)
assert net.converged
# same angle but different voltage magnitude also raises an error
net.ext_grid.vm_pu.at[eg2] = 1.02
net.ext_grid.va_degree.at[eg2] = 0
with pytest.raises(UserWarning):
pp.runpp(net)
def simple_four_bus_system():
"""
This function creates a simple four bus system with two radial low voltage nodes connected to \
a medium valtage slack bus. At both low voltage nodes the a load and a static generator is \
connected.
OUTPUT:
**net** - Returns the required four bus system
EXAMPLE:
import pandapower.networks as pn
net_simple_four_bus = pn.simple_four_bus_system()
"""
net = pp.create_empty_network()
busnr1 = pp.create_bus(net, name="bus1ref", vn_kv=10)
pp.create_ext_grid(net, busnr1)
busnr2 = pp.create_bus(net, name="bus2", vn_kv=.4)
pp.create_transformer(net,
busnr1,
busnr2,
name="transformer",
std_type="0.25 MVA 10/0.4 kV")
busnr3 = pp.create_bus(net, name="bus3", vn_kv=.4)
pp.create_line(net,
busnr2,
busnr3,
name="line1",
length_km=0.50000,
std_type="NAYY 4x50 SE")
busnr4 = pp.create_bus(net, name="bus4", vn_kv=.4)
pp.create_line(net,
busnr3,
busnr4,
name="line2",
length_km=0.50000,
std_type="NAYY 4x50 SE")
pp.create_load(net, busnr3, 30, 10, name="load1")
pp.create_load(net, busnr4, 30, 10, name="load2")
pp.create_sgen(net, busnr3, p_kw=-20., q_kvar=-5., name="pv1", sn_kva=30)
pp.create_sgen(net, busnr4, p_kw=-15., q_kvar=-2., name="pv2", sn_kva=20)
return net
def test_drop_elements_at_buses():
net = pp.create_empty_network()
bus0 = pp.create_bus(net, vn_kv=110)
bus1 = pp.create_bus(net, vn_kv=20)
bus2 = pp.create_bus(net, vn_kv=10)
bus3 = pp.create_bus(net, vn_kv=0.4)
bus4 = pp.create_bus(net, vn_kv=0.4)
bus5 = pp.create_bus(net, vn_kv=20)
pp.create_ext_grid(net, 0)
trafo0 = pp.create_transformer3w(net, hv_bus=bus0, mv_bus=bus1, lv_bus=bus2, name='trafo0',
std_type='63/25/38 MVA 110/20/10 kV')
trafo1 = pp.create_transformer(net, hv_bus=bus2, lv_bus=bus3, std_type='0.4 MVA 10/0.4 kV')
line1 = pp.create_line(net, from_bus=bus3, to_bus=bus4, length_km=20.1,
std_type='24-AL1/4-ST1A 0.4', name='line1')
pp.create_sgen(net, 1, 0)
switch0a = pp.create_switch(net, bus=bus0, element=trafo0, et='t3')
switch0b = pp.create_switch(net, bus=bus1, element=trafo0, et='t3')
switch0c = pp.create_switch(net, bus=bus2, element=trafo0, et='t3')
switch1 = pp.create_switch(net, bus=bus1, element=bus5, et='b')
switch2a = pp.create_switch(net, bus=bus2, element=trafo1, et='t')
switch2b = pp.create_switch(net, bus=bus3, element=trafo1, et='t')
switch3a = pp.create_switch(net, bus=bus3, element=line1, et='l')
switch3b = pp.create_switch(net, bus=bus4, element=line1, et='l')
# bus id needs to be entered as iterable, not done in the function
for b in net.bus.index.values:
net1 = net.deepcopy()
cd = tb.get_connected_elements_dict(net1, b, connected_buses=False)
swt3w = set(net1.switch.loc[net1.switch.element.isin(cd.get('trafo3w', [1000])) & (net1.switch.et=='t3')].index)
swt = set(net1.switch.loc[net1.switch.element.isin(cd.get('trafo', [1000])) & (net1.switch.et=='t')].index)
swl = set(net1.switch.loc[net1.switch.element.isin(cd.get('line', [1000])) & (net1.switch.et=='l')].index)
sw = swt3w | swt | swl
tb.drop_elements_at_buses(net1, [b])
assert b not in net1.switch.bus.values
assert b not in net1.switch.query("et=='b'").element.values
assert sw.isdisjoint(set(net1.switch.index))
for elm, id in cd.items():
assert len(net1[elm].loc[net1[elm].index.isin(id)]) == 0
def test_unconstrained_line():
""" Testing a very simple network without transformer for voltage
constraints with OPF """
# boundaries:
vm_max = 1.05
vm_min = 0.95
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_gen(net,
1,
p_kw=-100,
controllable=True,
max_p_kw=-5,
min_p_kw=-150,
max_q_kvar=50,
min_q_kvar=-50)
pp.create_ext_grid(net, 0)
pp.create_load(net, 1, p_kw=20, controllable=False)
pp.create_line_from_parameters(net,
0,
1,
50,
name="line2",
r_ohm_per_km=0.876,
c_nf_per_km=260.0,
max_i_ka=0.123,
x_ohm_per_km=0.1159876)
pp.create_polynomial_cost(net, 0, "gen", array([-1, 0]))
# run OPF
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
# check and assert result
logger.debug("test_simplest_voltage")
logger.debug("res_gen:\n%s" % net.res_gen)
logger.debug("res_ext_grid:\n%s" % net.res_ext_grid)
logger.debug("res_bus.vm_pu: \n%s" % net.res_bus.vm_pu)
assert max(net.res_bus.vm_pu) < vm_max
assert min(net.res_bus.vm_pu) > vm_min
def test_3bus_with_bad_data():
net = pp.create_empty_network()
pp.create_bus(net, name="bus1", vn_kv=1.)
pp.create_bus(net, name="bus2", vn_kv=1.)
pp.create_bus(net, name="bus3", vn_kv=1.)
pp.create_ext_grid(net, 0)
pp.create_line_from_parameters(net, 0, 1, 1, r_ohm_per_km=0.7, x_ohm_per_km=0.2, c_nf_per_km=0,
max_i_ka=1)
pp.create_line_from_parameters(net, 0, 2, 1, r_ohm_per_km=0.8, x_ohm_per_km=0.8, c_nf_per_km=0,
max_i_ka=1)
pp.create_line_from_parameters(net, 1, 2, 1, r_ohm_per_km=1, x_ohm_per_km=0.6, c_nf_per_km=0,
max_i_ka=1)
pp.create_measurement(net, "p", "line", -0.0011, 0.01, 0, 0) # p12
pp.create_measurement(net, "q", "line", 0.024, 0.01, 0, 0) # q12
pp.create_measurement(net, "p", "bus", 0.018, 0.01, 2) # p3
pp.create_measurement(net, "q", "bus", -0.1, 0.01, 2) # q3
pp.create_measurement(net, "v", "bus", 1.08, 0.05, 0) # u1
pp.create_measurement(net, "v", "bus", 1.015, 0.05, 2) # u3
# 1. Create false voltage measurement for testing bad data detection (-> should be removed)
pp.create_measurement(net, "v", "bus", 1.3, 0.01, 1) # V at bus 2
# 2. Do chi2-test
bad_data_detected = chi2_analysis(net, init='flat')
# 3. Perform rn_max_test
success_rn_max = remove_bad_data(net, init='flat')
v_est_rn_max = net.res_bus_est.vm_pu.values
delta_est_rn_max = net.res_bus_est.va_degree.values
target_v = np.array([1.0627, 1.0589, 1.0317])
diff_v = target_v - v_est_rn_max
target_delta = np.array([0., 0.8677, 3.1381])
diff_delta = target_delta - delta_est_rn_max
assert bad_data_detected
assert success_rn_max
assert (np.nanmax(abs(diff_v)) < 1e-4)
assert (np.nanmax(abs(diff_delta)) < 1e-4)
def test_drop_inactive_elements():
net = pp.create_empty_network()
service = 0
bus0 = pp.create_bus(net, vn_kv=.4, in_service=service)
pp.create_ext_grid(net, bus0, in_service=service)
bus1 = pp.create_bus(net, vn_kv=.4, in_service=service)
pp.create_transformer(net,
bus0,
bus1,
in_service=service,
std_type='63 MVA 110/20 kV')
bus2 = pp.create_bus(net, vn_kv=.4, in_service=service)
pp.create_line(net,
bus1,
bus2,
length_km=1,
in_service=service,
std_type='149-AL1/24-ST1A 10.0')
pp.create_load(net, bus2, p_kw=0., in_service=service)
pp.create_sgen(net, bus2, p_kw=0., in_service=service)
# drop them
tb.drop_inactive_elements(net)
sum_of_elements = 0
for element in net.keys():
# skip this one since we expect items here
if element == "std_types" or element == "_pd2ppc_lookups" or element == "_ppc2pd_lookups":
continue
try:
sum_of_elements += len(net[element])
except TypeError:
# _ppc is initialized with None and clashes when checking
continue
assert sum_of_elements == 0
def test_net_unobserved_island():
net = pp.create_empty_network()
bus1 = pp.create_bus(net, name="bus1", vn_kv=10.)
bus2 = pp.create_bus(net, name="bus2", vn_kv=10.)
bus3 = pp.create_bus(net, name="bus3", vn_kv=10.)
bus4 = pp.create_bus(net, name="bus4", vn_kv=110.)
pp.create_line_from_parameters(net, bus1, bus2, 10, r_ohm_per_km=.59, x_ohm_per_km=.35, c_nf_per_km=10.1,
max_i_ka=1)
pp.create_line_from_parameters(net, bus2, bus3, 10, r_ohm_per_km=.59, x_ohm_per_km=.35, c_nf_per_km=10.1,
max_i_ka=1)
pp.create_transformer(net, bus4, bus1, std_type="40 MVA 110/10 kV")
pp.create_ext_grid(net, bus=bus4, vm_pu=1.0)
pp.create_load(net, bus1, p_mw=.350, q_mvar=.100)
pp.create_load(net, bus2, p_mw=.450, q_mvar=.100)
pp.create_load(net, bus3, p_mw=.250, q_mvar=.100)
# Created bb switch
pp.runpp(net, calculate_voltage_angles=True)
pp.create_measurement(net, "v", "bus", r2(net.res_bus.vm_pu.iloc[bus1], .002), .002, element=bus1)
pp.create_measurement(net, "v", "bus", r2(net.res_bus.vm_pu.iloc[bus4], .002), .002, element=bus4)
pp.create_measurement(net, "p", "bus", -r2(net.res_bus.p_mw.iloc[bus4], .002), .002, element=bus4)
pp.create_measurement(net, "q", "bus", -r2(net.res_bus.q_mvar.iloc[bus4], .002), .002, element=bus4)
# IF pq of bus2 is not available makes bus3 an unobserved island
# pp.create_measurement(net, "p", "bus", -r2(net.res_bus.p_mw.iloc[bus2], .001), .001, element=bus2)
# pp.create_measurement(net, "q", "bus", -r2(net.res_bus.q_mvar.iloc[bus2], .001), .001, element=bus2)
pp.create_measurement(net, "p", "bus", -r2(net.res_bus.p_mw.iloc[bus1], .001), .001, element=bus1)
pp.create_measurement(net, "q", "bus", -r2(net.res_bus.q_mvar.iloc[bus1], .001), .001, element=bus1)
pp.create_measurement(net, "p", "line", r2(net.res_line.p_from_mw.iloc[0], .002), .002, 0, side='from')
pp.create_measurement(net, "q", "line", r2(net.res_line.q_from_mvar.iloc[0], .002), .002, 0, side='from')
pp.create_measurement(net, "p", "trafo", r2(net.res_trafo.p_hv_mw.iloc[0], .001), .01,
side="hv", element=0)
pp.create_measurement(net, "q", "trafo", r2(net.res_trafo.q_hv_mvar.iloc[0], .001), .01,
side="hv", element=0)
success = estimate(net, tolerance=1e-6, zero_injection=None)
assert success
def test_opf_sgen_voltage():
""" Testing a simple network with transformer for voltage
constraints with OPF using a static generator """
# boundaries
vm_max = 1.04
vm_min = 0.96
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_transformer_from_parameters(net, 0, 1, vsc_percent=3.75,
tp_max=2, vn_lv_kv=0.4,
shift_degree=150, tp_mid=0,
vn_hv_kv=10.0, vscr_percent=2.8125,
tp_pos=0, tp_side="hv", tp_min=-2,
tp_st_percent=2.5, i0_percent=0.68751,
sn_kva=16.0, pfe_kw=0.11, name=None,
in_service=True, index=None, max_loading_percent=1000000)
pp.create_sgen(net, 3, p_kw=-10, controllable=True, max_p_kw=-
15, min_p_kw=-5, max_q_kvar=25, min_q_kvar=-25, cost_per_kw = -100)
pp.create_ext_grid(net, 0)
pp.create_line_from_parameters(net, 1, 2, 1, name="line2", r_ohm_per_km=0.876,
c_nf_per_km=260.0, imax_ka=0.123, x_ohm_per_km=0.1159876,
max_loading_percent=1000000)
pp.create_line_from_parameters(net, 2, 3, 1, name="line2", r_ohm_per_km=0.876,
c_nf_per_km=260.0, imax_ka=0.123, x_ohm_per_km=0.1159876,
max_loading_percent=1000000)
# run OPF
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
# assert and check result
logger.debug("test_opf_sgen_voltage")
logger.debug("res_sgen:\n%s" % net.res_sgen)
logger.debug("res_bus.vm_pu: \n%s" % net.res_bus.vm_pu)
assert max(net.res_bus.vm_pu) < vm_max
assert net.OPF_converged
def test_mixed_p_q_pol():
vm_max = 1.05
vm_min = 0.95
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_gen(net,
1,
p_kw=-100,
controllable=True,
max_p_kw=-5,
min_p_kw=-150,
max_q_kvar=50,
min_q_kvar=-50)
pp.create_ext_grid(net, 0)
pp.create_load(net,
1,
p_kw=20,
controllable=False,
max_q_kvar=50,
max_p_kw=100,
min_p_kw=50,
min_q_kvar=-50)
pp.create_line_from_parameters(net,
0,
1,
50,
name="line2",
r_ohm_per_km=0.876,
c_nf_per_km=260.0,
max_i_ka=0.123,
x_ohm_per_km=0.1159876,
max_loading_percent=100 * 690)
# testing some combinations
pp.create_polynomial_cost(net, 0, "gen", np.array([0, -1, 0]))
pp.create_polynomial_cost(net, 0, "gen", np.array([0, -1, 0]), type="q")
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
assert net.res_cost == -net.res_gen.p_kw.values + net.res_gen.q_kvar.values
def test_cost_piecewise_linear_sgen_q():
""" Testing a very simple network for the resulting cost value
constraints with OPF """
# boundaries:
vm_max = 1.05
vm_min = 0.95
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_sgen(net,
1,
p_kw=-100,
controllable=True,
max_p_kw=-5,
min_p_kw=-150,
max_q_kvar=50,
min_q_kvar=-50)
pp.create_ext_grid(net, 0)
pp.create_load(net, 1, p_kw=20, controllable=False)
pp.create_line_from_parameters(net,
0,
1,
50,
name="line2",
r_ohm_per_km=0.876,
c_nf_per_km=260.0,
max_i_ka=0.123,
x_ohm_per_km=0.1159876,
max_loading_percent=100 * 690)
pp.create_piecewise_linear_cost(net,
0,
"sgen",
np.array([[-50, 50], [50, -50]]),
type="q")
# run OPF
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
assert net.res_cost - net.res_sgen.q_kvar.values < 1e-3
def test_oos_buses_at_trafo3w():
net = pp.create_empty_network()
b1 = pp.create_bus(net, vn_kv=110.)
b2 = pp.create_bus(net, vn_kv=110.)
b3 = pp.create_bus(net, vn_kv=110., in_service=False)
b4 = pp.create_bus(net, vn_kv=20., in_service=False)
b5 = pp.create_bus(net, vn_kv=10., in_service=False)
pp.create_ext_grid(net, b1)
l1 = pp.create_line(net, b1, b2, 0.5, std_type="NAYY 4x50 SE", in_service=True)
l2 = pp.create_line(net, b2, b3, 0.5, std_type="NAYY 4x50 SE", in_service=False)
tidx = pp.create_transformer3w(
net, b3, b4, b5, std_type='63/25/38 MVA 110/20/10 kV', in_service=True)
pp.runpp(net, trafo3w_losses = 'star', trafo_model= 'pi', init='flat')
assert net.res_line.loading_percent.at[l1] > 0
assert np.isnan(net.res_trafo3w.i_hv_ka.at[tidx])
def test_equal_indices_res():
# tests if res_bus indices of are the same as the ones in bus.
# If this is not the case and you init from results, the PF will fail
net = pp.create_empty_network()
b1 = pp.create_bus(net, vn_kv=10., index=3)
b2 = pp.create_bus(net, vn_kv=0.4, index=1)
b3 = pp.create_bus(net, vn_kv=0.4, index=2)
pp.create_ext_grid(net, b1)
pp.create_transformer(net, b1, b2, std_type="0.63 MVA 20/0.4 kV")
pp.create_line(net, b2, b3, 0.5, std_type="NAYY 4x50 SE", index=4)
pp.create_load(net, b3, p_mw=0.010)
pp.runpp(net)
net["bus"] = net["bus"].sort_index()
try:
pp.runpp(net, init_vm_pu="results", init_va_degree="results")
assert True
except LoadflowNotConverged:
assert False
def test_result_index_unsorted():
net = pp.create_empty_network()
pp.set_user_pf_options(net, tolerance_mva=1e-9)
b1 = pp.create_bus(net, vn_kv=0.4, index=4)
b2 = pp.create_bus(net, vn_kv=0.4, index=2)
b3 = pp.create_bus(net, vn_kv=0.4, index=3)
pp.create_gen(net, b1, p_mw=0.01, vm_pu=0.4)
pp.create_load(net, b2, p_mw=0.01)
pp.create_ext_grid(net, b3)
pp.create_line(net, from_bus=b1, to_bus=b2, length_km=0.5, std_type="NAYY 4x120 SE")
pp.create_line(net, from_bus=b1, to_bus=b3, length_km=0.5, std_type="NAYY 4x120 SE")
net_recycle = copy.deepcopy(net)
pp.runpp(net_recycle)
pp.runpp(net_recycle, recycle=dict(trafo=True, bus_pq=True, gen=True))
pp.runpp(net)
assert nets_equal(net, net_recycle, atol=1e-12)
def simple_network():
net = pp.create_empty_network()
b1 = pp.create_bus(net, name="bus1", vn_kv=10.)
pp.create_ext_grid(net, b1)
b2 = pp.create_bus(net, name="bus2", geodata=(1, 2))
b3 = pp.create_bus(net, name="bus3", geodata=(1, 3))
b4 = pp.create_bus(net, name="bus4", vn_kv=10.)
pp.create_transformer(net, b4, b2,
std_type="0.25 MVA 10/0.4 kV",
name=None, in_service=True, index=None)
pp.create_line(net, b2, b3, 1, name="line1",
std_type="NAYY 4x150 SE",
geodata=np.array([[1, 2], [3, 4]]))
pp.create_line(net, b1, b4, 1, name="line2",
std_type="NAYY 4x150 SE")
pp.create_load(net, b2, p_mw=0.01, q_mvar=0, name="load1")
pp.create_load(net, b3, p_mw=0.04, q_mvar=0.002, name="load2")
pp.create_gen(net, 3, q_mvar=0.020, vm_pu=1.0)
pp.create_sgen(net, 2, p_mw=0.050, sn_mva=0.1)
return net
def test_in_service_controllables():
""" Testing controllable but out of service elements behaviour """
# boundaries
vm_max = 1.1
vm_min = 0.9
max_line_loading_percent = 100
# create network
net = pp.create_empty_network()
b1 = pp.create_bus(net, vn_kv=0.4, max_vm_pu=vm_max, min_vm_pu=vm_min)
b2 = pp.create_bus(net, vn_kv=0.4, max_vm_pu=vm_max, min_vm_pu=vm_min)
pp.create_line(net, b1, b2, length_km=5, std_type="NAYY 4x50 SE",
max_loading_percent=max_line_loading_percent)
# test elements static
pp.create_ext_grid(net, b2)
pp.create_load(net, b1, p_mw=7.5, controllable=True, max_p_mw=0.010, min_p_mw=0,
max_q_mvar=2.5, min_q_mvar=-2.5)
pp.create_sgen(net, b1, p_mw=0.025, controllable=True, min_p_mw=0.01, max_p_mw=0.025,
max_q_mvar=0.025, min_q_mvar=-0.025)
# test elements
pp.create_sgen(net, b1, p_mw=0.025, controllable=True, min_p_mw=0, max_p_mw=0.025,
max_q_mvar=0.025, min_q_mvar=-0.025)
pp.create_load(net, b1, p_mw=0.025, controllable=True, max_p_mw=0.0025, min_p_mw=0,
max_q_mvar=2.5, min_q_mvar=-2.5)
# costs
pp.create_poly_cost(net, 0, "ext_grid",cp1_eur_per_mw= 3)
pp.create_poly_cost(net, 0, "load",cp1_eur_per_mw= -1)
pp.create_poly_cost(net, 0, "sgen",cp1_eur_per_mw= 2)
pp.create_poly_cost(net, 1, "sgen",cp1_eur_per_mw= 1)
pp.create_poly_cost(net, 1, "load",cp1_eur_per_mw= -1)
net["sgen"].in_service.iloc[1] = False
net["load"].in_service.iloc[1] = False
pp.runopp(net, )
assert net["OPF_converged"]
def test_network_with_trafo3w_with_disabled_branch():
net = pp.create_empty_network()
bus_slack = pp.create_bus(net, vn_kv=110)
pp.create_ext_grid(net, bus=bus_slack)
bus_20_1 = pp.create_bus(net, vn_kv=20,name="b")
pp.create_sgen(net, bus=bus_20_1, p_mw=0.03, q_mvar=0.02)
bus_10_1 = pp.create_bus(net, vn_kv=10)
pp.create_sgen(net, bus=bus_10_1, p_mw=0.02, q_mvar=0.02)
bus_10_2 = pp.create_bus(net, vn_kv=10)
pp.create_load(net, bus=bus_10_2, p_mw=0.06, q_mvar=0.01)
pp.create_line(net, from_bus=bus_10_1, to_bus=bus_10_2, std_type="149-AL1/24-ST1A 10.0", length_km=2)
disabled_line = pp.create_line(net, from_bus=bus_10_1, to_bus=bus_10_2, std_type="149-AL1/24-ST1A 10.0", length_km=2)
net.line.at[disabled_line, 'in_service'] = False
pp.create_transformer3w(net, bus_slack, bus_20_1, bus_10_1, std_type="63/25/38 MVA 110/20/10 kV")
pp.runpp(net)
pp.create_measurement(net, "p", "line", net.res_line.p_from_mw[0], 0.001, 0, 'from')
pp.create_measurement(net, "q", "line", net.res_line.q_from_mvar[0], 0.001, 0, 'from')
pp.create_measurement(net, "p", "line", net.res_line.p_to_mw[0], 0.001, 0, 'to')
pp.create_measurement(net, "q", "line", net.res_line.q_to_mvar[0], 0.001, 0, 'to')
pp.create_measurement(net, "p", "trafo3w", net.res_trafo3w.p_hv_mw[0], 0.001, 0, 'hv')
pp.create_measurement(net, "q", "trafo3w", net.res_trafo3w.q_hv_mvar[0], 0.001, 0, 'hv')
pp.create_measurement(net, "p", "trafo3w", net.res_trafo3w.p_mv_mw[0], 0.002, 0, 'mv')
pp.create_measurement(net, "q", "trafo3w", net.res_trafo3w.q_mv_mvar[0], 0.002, 0, 'mv')
pp.create_measurement(net, "p", "trafo3w", net.res_trafo3w.p_lv_mw[0], 0.001, 0, 'lv')
pp.create_measurement(net, "q", "trafo3w", net.res_trafo3w.q_lv_mvar[0], 0.001, 0, 'lv')
pp.create_measurement(net, "v", "bus", net.res_bus.vm_pu[0], 0.01, 0)
pp.create_measurement(net, "v", "bus", net.res_bus.vm_pu[1], 0.01, 1)
success = estimate(net)
assert success
assert (np.nanmax(np.abs(net.res_bus.vm_pu.values - net.res_bus_est.vm_pu.values)) < 0.006)
assert (np.nanmax(np.abs(net.res_bus.va_degree.values- net.res_bus_est.va_degree.values)) < 0.006)
def test_3bus_with_2_slacks():
# load the net which already contains 3 buses
net = load_3bus_network()
# add the same net with different slack (no galvanic connection)
# skip bus index 4 as further stability test
pp.create_bus(net, name="bus5", vn_kv=1., index=5)
pp.create_bus(net, name="bus6", vn_kv=1., index=6)
pp.create_bus(net, name="bus7", vn_kv=1., index=7)
pp.create_ext_grid(net, 5)
pp.create_line_from_parameters(net, 5, 6, 1, r_ohm_per_km=.01, x_ohm_per_km=.03, c_nf_per_km=0.,
max_i_ka=1)
pp.create_line_from_parameters(net, 5, 7, 1, r_ohm_per_km=.02, x_ohm_per_km=.05, c_nf_per_km=0.,
max_i_ka=1)
pp.create_line_from_parameters(net, 6, 7, 1, r_ohm_per_km=.03, x_ohm_per_km=.08, c_nf_per_km=0.,
max_i_ka=1)
pp.create_measurement(net, "v", "bus", 1.006, .004, element=5) # V at bus 5
pp.create_measurement(net, "v", "bus", .968, .004, element=6) # V at bus 6
pp.create_measurement(net, "p", "bus", -.501, .010, element=6) # P at bus 6
pp.create_measurement(net, "q", "bus", -.286, .010, element=6) # Q at bus 6
pp.create_measurement(net, "p", "line", .888, .008, 3, 5) # Pline (bus 5 -> bus 6) at bus 5
pp.create_measurement(net, "p", "line", 1.173, .008, 4, 5) # Pline (bus 5 -> bus 7) at bus 5
pp.create_measurement(net, "q", "line", .568, .008, 3, 5) # Qline (bus 5 -> bus 6) at bus 5
pp.create_measurement(net, "q", "line", .663, .008, 4, 5) # Qline (bus 5 -> bus 7) at bus 5
# 2. Do state estimation
success = estimate(net, init='flat', maximum_iterations=10)
v_result = net.res_bus_est.vm_pu.values
delta_result = net.res_bus_est.va_degree.values
target_v = np.array([0.9996, 0.9741, 0.9438, np.nan, 0.9996, 0.9741, 0.9438])
diff_v = target_v - v_result
target_delta = np.array([0.0, -1.2475469989322963, -2.7457167371166862, np.nan, 0.0,
-1.2475469989322963, -2.7457167371166862])
diff_delta = target_delta - delta_result
assert success
assert (np.nanmax(abs(diff_v)) < 1e-4)
assert (np.nanmax(abs(diff_delta)) < 1e-4)
def test_cost_pwl_q_3point():
# We have a problem with the cost value after optimization of 3 point q cost functions! It returns the amount of q at the EG, but not the costs!
# Also, the q result is not the optimum!
vm_max = 1.05
vm_min = 0.95
# create net
net = pp.create_empty_network()
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=10.)
pp.create_bus(net, max_vm_pu=vm_max, min_vm_pu=vm_min, vn_kv=.4)
pp.create_sgen(net,
1,
p_kw=-100,
controllable=True,
max_p_kw=-5,
min_p_kw=-150,
max_q_kvar=50,
min_q_kvar=-50)
pp.create_ext_grid(net, 0)
pp.create_load(net, 1, p_kw=20, controllable=False)
pp.create_line_from_parameters(net,
0,
1,
50,
name="line2",
r_ohm_per_km=0.876,
c_nf_per_km=260.0,
max_i_ka=0.123,
x_ohm_per_km=0.1159876,
max_loading_percent=100 * 690)
pp.create_piecewise_linear_cost(net,
0,
"sgen",
np.array([[-50, 50], [0, 0], [50, 50]]),
type="q")
# run OPF
pp.runopp(net, verbose=False)
assert net["OPF_converged"]
def test_overloaded_lines():
net = pp.create_empty_network()
bus0 = pp.create_bus(net, vn_kv=.4)
bus1 = pp.create_bus(net, vn_kv=.4)
pp.create_ext_grid(net, bus0)
line0 = pp.create_line(net,
bus0,
bus1,
length_km=1,
std_type="NAYY 4x50 SE")
line1 = pp.create_line(net,
bus0,
bus1,
length_km=1,
std_type="NA2XS2Y 1x95 RM/25 12/20 kV")
line2 = pp.create_line(net,
bus0,
bus1,
length_km=1,
std_type="15-AL1/3-ST1A 0.4")
line3 = pp.create_line(net,
bus0,
bus1,
length_km=10,
std_type="149-AL1/24-ST1A 10.0")
pp.create_load(net, bus1, p_kw=200, q_kvar=50)
pp.runpp(net)
# test the overloaded lines by default value of max_load=100
overloaded_lines = tb.overloaded_lines(net, max_load=100)
assert set(overloaded_lines) == set([line0, line1])
# test the overloaded lines by a self defined value of max_load=50
overloaded_lines = tb.overloaded_lines(net, max_load=50)
assert set(overloaded_lines) == set([line0, line1, line2])
def test_continuous_tap_control_vectorized_hv():
# --- load system and run power flow
net = pp.create_empty_network()
pp.create_buses(net, 6, 110)
pp.create_buses(net, 5, 20)
pp.create_ext_grid(net, 0)
pp.create_lines(net, np.zeros(5), np.arange(1, 6), 10,
"243-AL1/39-ST1A 110.0")
for hv, lv in zip(np.arange(1, 6), np.arange(6, 11)):
pp.create_transformer(net, hv, lv, "63 MVA 110/20 kV")
pp.create_load(net, lv, 25 * (lv - 8), 25 * (lv - 8) * 0.4)
pp.set_user_pf_options(net, init='dc', calculate_voltage_angles=True)
# --- run loadflow
pp.runpp(net)
net_ref = net.deepcopy()
# create with individual controllers for comparison
tol = 1e-4
for tid in net.trafo.index.values:
ContinuousTapControl(net_ref,
tid=tid,
side='hv',
vm_set_pu=1.02,
tol=tol)
# run control reference
pp.runpp(net_ref, run_control=True)
# now create the vectorized version
ContinuousTapControl(net,
tid=net.trafo.index.values,
side='hv',
vm_set_pu=1.02,
tol=tol)
pp.runpp(net, run_control=True)
assert np.allclose(net_ref.trafo.tap_pos,
net.trafo.tap_pos,
atol=1e-2,
rtol=0)
def test_pandapower_case():
#more complicated examples like
#net = pandapower.networks.example_simple()
#can be used once the import of e.g. switches is perfected
#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")
#because of phase angles, need to init with DC
pp.runpp(net,calculate_voltage_angles=True,init="dc")
n = pypsa.Network()
n.import_from_pandapower_net(net)
#seed PF with LPF solution because of phase angle jumps
n.lpf()
n.pf(use_seed=True)
#use same index for everything
net.res_bus.index = net.bus.name.values
net.res_line.index = net.line.name.values
#compare bus angles
np.testing.assert_array_almost_equal(n.buses_t.v_ang.loc["now"]*180/np.pi,net.res_bus.va_degree)
#compare bus voltage magnitudes
np.testing.assert_array_almost_equal(n.buses_t.v_mag_pu.loc["now"],net.res_bus.vm_pu)
#compare bus active power (NB: pandapower uses load signs)
np.testing.assert_array_almost_equal(n.buses_t.p.loc["now"],-net.res_bus.p_kw/1e3)
#compare bus active power (NB: pandapower uses load signs)
np.testing.assert_array_almost_equal(n.buses_t.q.loc["now"],-net.res_bus.q_kvar/1e3)
#compare branch flows
np.testing.assert_array_almost_equal(n.lines_t.p0.loc["now"],net.res_line.p_from_kw/1e3)
np.testing.assert_array_almost_equal(n.lines_t.p1.loc["now"],net.res_line.p_to_kw/1e3)
np.testing.assert_array_almost_equal(n.lines_t.q0.loc["now"],net.res_line.q_from_kvar/1e3)
np.testing.assert_array_almost_equal(n.lines_t.q1.loc["now"],net.res_line.q_to_kvar/1e3)
np.testing.assert_array_almost_equal(n.transformers_t.p0.loc["now"],net.res_trafo.p_hv_kw/1e3)
np.testing.assert_array_almost_equal(n.transformers_t.p1.loc["now"],net.res_trafo.p_lv_kw/1e3)
np.testing.assert_array_almost_equal(n.transformers_t.q0.loc["now"],net.res_trafo.q_hv_kvar/1e3)
np.testing.assert_array_almost_equal(n.transformers_t.q1.loc["now"],net.res_trafo.q_lv_kvar/1e3)