def power_flow_worker(variation: int, nbus, nbr, n_tr, bus_names, branch_names,
transformer_names, bus_types,
calculation_inputs: List[SnapshotData],
options: PowerFlowOptions, dP, return_dict):
"""
Run asynchronous power flow
:param variation: variation id
:param nbus: number of buses
:param nbr: number of branches
:param n_tr:
:param bus_names:
:param branch_names:
:param transformer_names:
:param bus_types:
:param calculation_inputs: list of CalculationInputs' instances
:param options: PowerFlowOptions instance
:param dP: delta of active power (array of values of size nbus)
:param return_dict: dictionary to return values
:return: Nothing because it is a worker, the return is done via the return_dict variable
"""
# create new results
pf_results = PowerFlowResults(n=nbus,
m=nbr,
n_tr=n_tr,
n_hvdc=0,
bus_names=bus_names,
branch_names=branch_names,
transformer_names=transformer_names,
hvdc_names=(),
bus_types=bus_types)
logger = Logger()
# simulate each island and merge the results
for i, calculation_input in enumerate(calculation_inputs):
if len(calculation_input.vd) > 0:
# run circuit power flow
res = single_island_pf(circuit=calculation_input,
Vbus=calculation_input.Vbus,
Sbus=calculation_input.Sbus -
dP[calculation_input.original_bus_idx],
Ibus=calculation_input.Ibus,
branch_rates=calculation_input.branch_rates,
options=options,
logger=Logger())
# merge the results from this island
pf_results.apply_from_island(
results=res,
b_idx=calculation_input.original_bus_idx,
br_idx=calculation_input.original_branch_idx,
tr_idx=calculation_input.original_tr_idx)
else:
logger.add_info('No slack nodes in the island', str(i))
return_dict[variation] = (pf_results, logger)
def power_flow_worker(variation: int, nbus, nbr,
calculation_inputs: List[CalculationInputs],
options: PowerFlowOptions, dP, return_dict):
"""
Run asynchronous power flow
:param variation: variation id
:param nbus: number of buses
:param nbr: number of branches
:param calculation_inputs: list of CalculationInputs' instances
:param options: PowerFlowOptions instance
:param dP: delta of active power (array of values of size nbus)
:param return_dict: dictionary to return values
:return: Nothing because it is a worker, the return is done via the return_dict variable
"""
# create new results
pf_results = PowerFlowResults()
pf_results.initialize(nbus, nbr)
logger = Logger()
# simulate each island and merge the results
for i, calculation_input in enumerate(calculation_inputs):
if len(calculation_input.ref) > 0:
# run circuit power flow
res = single_island_pf(circuit=calculation_input,
Vbus=calculation_input.Vbus,
Sbus=calculation_input.Sbus -
dP[calculation_input.original_bus_idx],
Ibus=calculation_input.Ibus,
branch_rates=calculation_input.branch_rates,
options=options,
logger=Logger())
bus_original_idx = calculation_input.original_bus_idx
branch_original_idx = calculation_input.original_branch_idx
# merge the results from this island
pf_results.apply_from_island(res, bus_original_idx,
branch_original_idx)
else:
logger.append('There are no slack nodes in the island ' + str(i))
return_dict[variation] = (pf_results, logger)