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Structure code in logically separated submodules (#188)
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69
src/akkudoktoreos/devices/inverter.py
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69
src/akkudoktoreos/devices/inverter.py
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from pydantic import BaseModel, Field
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from akkudoktoreos.devices.battery import PVAkku
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class WechselrichterParameters(BaseModel):
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max_leistung_wh: float = Field(10000, gt=0)
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class Wechselrichter:
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def __init__(self, parameters: WechselrichterParameters, akku: PVAkku):
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self.max_leistung_wh = (
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parameters.max_leistung_wh # Maximum power that the inverter can handle
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)
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self.akku = akku # Connection to a battery object
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def energie_verarbeiten(self, erzeugung, verbrauch, hour):
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verluste = 0 # Losses during processing
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netzeinspeisung = 0 # Grid feed-in
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netzbezug = 0.0 # Grid draw
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eigenverbrauch = 0.0 # Self-consumption
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if erzeugung >= verbrauch:
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if verbrauch > self.max_leistung_wh:
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# If consumption exceeds maximum inverter power
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verluste += erzeugung - self.max_leistung_wh
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restleistung_nach_verbrauch = self.max_leistung_wh - verbrauch
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netzbezug = -restleistung_nach_verbrauch # Negative indicates feeding into the grid
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eigenverbrauch = self.max_leistung_wh
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else:
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# Remaining power after consumption
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restleistung_nach_verbrauch = erzeugung - verbrauch
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# Load battery with excess energy
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geladene_energie, verluste_laden_akku = self.akku.energie_laden(
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restleistung_nach_verbrauch, hour
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)
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rest_überschuss = restleistung_nach_verbrauch - (
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geladene_energie + verluste_laden_akku
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)
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# Feed-in to the grid based on remaining capacity
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if rest_überschuss > self.max_leistung_wh - verbrauch:
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netzeinspeisung = self.max_leistung_wh - verbrauch
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verluste += rest_überschuss - netzeinspeisung
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else:
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netzeinspeisung = rest_überschuss
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verluste += verluste_laden_akku
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eigenverbrauch = verbrauch # Self-consumption is equal to the load
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else:
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benötigte_energie = verbrauch - erzeugung # Energy needed from external sources
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max_akku_leistung = self.akku.max_ladeleistung_w # Maximum battery discharge power
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# Calculate remaining AC power available
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rest_ac_leistung = max(self.max_leistung_wh - erzeugung, 0)
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# Discharge energy from the battery based on need
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if benötigte_energie < rest_ac_leistung:
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aus_akku, akku_entladeverluste = self.akku.energie_abgeben(benötigte_energie, hour)
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else:
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aus_akku, akku_entladeverluste = self.akku.energie_abgeben(rest_ac_leistung, hour)
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verluste += akku_entladeverluste # Include losses from battery discharge
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netzbezug = benötigte_energie - aus_akku # Energy drawn from the grid
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eigenverbrauch = erzeugung + aus_akku # Total self-consumption
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return netzeinspeisung, netzbezug, verluste, eigenverbrauch
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