def Vgrms_calc(self): """Grid side terminal voltage - RMS""" return utility_functions.Urms_calc(self.vag, self.vbg, self.vcg)
def Vtrms_calc(self): """Inverter terminal voltage - RMS""" return utility_functions.Urms_calc(self.vta,self.vtb,self.vtc)
def Vrms_calc(self): """PCC LV side voltage - RMS""" return utility_functions.Urms_calc(self.va,self.vb,self.vc)
def Irms_calc(self): """Inverter current - RMS""" return utility_functions.Urms_calc(self.ia,self.ib,self.ic)
def setup(self, nodeid, V0): try: VpuInitial = 1.0 SinglePhase = False if 'myconfig' in OpenDSSData.config and 'DERParameters' in OpenDSSData.config[ 'myconfig']: #pvderConfig = copy.deepcopy(OpenDSSData.config['myconfig']['DERParameters']) DERFilePath = OpenDSSData.config['myconfig']['DERFilePath'] DERModelType = OpenDSSData.config['myconfig']['DERModelType'] DERSetting = OpenDSSData.config['myconfig']['DERSetting'] DERParameters = OpenDSSData.config['myconfig']['DERParameters'] if DERSetting == 'default': pvderConfig = self.get_derconfig(DERParameters['default']) DERArguments = self.get_derarguments( DERParameters['default']) elif DERSetting == 'PVPlacement': # for manual feeder config based on PVPlacement if nodeid in DERParameters['PVPlacement']: pvderConfig = self.get_derconfig( DERParameters['PVPlacement'][nodeid]) DERArguments = self.get_derarguments( DERParameters['PVPlacement'][nodeid]) else: raise ValueError( 'Distribution node {} not found in config file!'. format(nodeid)) else: raise ValueError( '{} is not a valid DER setting in config file!'.format( DERSetting)) if 'nodenumber' in OpenDSSData.config['myconfig']: DERLocation = str(os.getpid()) + '-' + 'bus_' + str( OpenDSSData.config['myconfig'] ['nodenumber']) + '-' + 'node_' + nodeid else: DERLocation = str(os.getpid()) + '-' + 'node_' + nodeid else: print( 'DERParameters not found in `OpenDSSData` object - using default ratings and parameters!' ) DERArguments = {} pvderConfig = {} SteadyState = True if SinglePhase: powerRating = 10.0e3 else: powerRating = 50.0e3 DERLocation = 'node_' + nodeid DERArguments.update({'pvderConfig': pvderConfig}) DERArguments.update({'powerRating': powerRating}) DERArguments.update({'SteadyState': SteadyState}) #Va = cmath.rect(DERArguments['VrmsRating']*math.sqrt(2),0.0) #Vb = utility_functions.Ub_calc(Va) #Vc = utility_functions.Uc_calc(Va) a = utility_functions.Urms_calc( V0['a'], V0['b'], V0['c']) / DERArguments['VrmsRating'] Va = (V0['a'] / a) #Convert node voltage at HV side to LV Vb = (V0['b'] / a) Vc = (V0['c'] / a) DERArguments.update({'identifier': DERLocation}) DERArguments.update({'derConfig': pvderConfig}) DERArguments.update({'standAlone': False}) DERArguments.update({'gridFrequency': 2 * math.pi * 60.0}) DERArguments.update({'gridVoltagePhaseA': Va}) DERArguments.update({'gridVoltagePhaseB': Vb}) DERArguments.update({'gridVoltagePhaseC': Vc}) logging.debug( 'Creating DER instance of {} model for {} node.'.format( DERModelType, DERLocation)) print('Creating DER instance of {} model for {} node.'.format( DERModelType, DERLocation)) events = SimulationEvents() PVDER_model = DERModel(modelType=DERModelType, events=events, configFile=DERFilePath, **DERArguments) self.PV_model = PVDER_model.DER_model self.PV_model.LVRT_ENABLE = True #Disconnects PV-DER based on ride through settings in case of voltage anomaly self.sim = DynamicSimulation(PV_model=self.PV_model, events=events, LOOP_MODE=True, COLLECT_SOLUTION=True) if DERModelType in self.sim.jac_list: self.sim.jacFlag = True #Provide analytical Jacobian to ODE solver else: self.sim.jacFlag = False self.sim.DEBUG_SOLVER = False #Check whether solver is failing to converge at any step self.results = SimulationResults(simulation=self.sim, PER_UNIT=True) self.lastSol = copy.deepcopy(self.sim.y0) # mutable,make copy self.lastT = 0 except Exception as e: OpenDSSData.log("Failed Setup PVDER at node:{}!".format(nodeid))