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from time import time
from datetime import datetime, timedelta
from typing import Optional
from collections import namedtuple
from .clickhouse import ClickhouseDatabase
IntervalList = list[list[Optional[datetime]]]
class InverterDatabase(ClickhouseDatabase):
def __init__(self):
super().__init__('solarmon')
def add_generation(self, home_id: int, client_time: int, watts: int) -> None:
self.db.execute(
'INSERT INTO generation (ClientTime, ReceivedTime, HomeID, Watts) VALUES',
[[client_time, round(time()), home_id, watts]]
)
def add_status(self, home_id: int,
client_time: int,
grid_voltage: int,
grid_freq: int,
ac_output_voltage: int,
ac_output_freq: int,
ac_output_apparent_power: int,
ac_output_active_power: int,
output_load_percent: int,
battery_voltage: int,
battery_voltage_scc: int,
battery_voltage_scc2: int,
battery_discharge_current: int,
battery_charge_current: int,
battery_capacity: int,
inverter_heat_sink_temp: int,
mppt1_charger_temp: int,
mppt2_charger_temp: int,
pv1_input_power: int,
pv2_input_power: int,
pv1_input_voltage: int,
pv2_input_voltage: int,
mppt1_charger_status: int,
mppt2_charger_status: int,
battery_power_direction: int,
dc_ac_power_direction: int,
line_power_direction: int,
load_connected: int) -> None:
self.db.execute("""INSERT INTO status (
ClientTime,
ReceivedTime,
HomeID,
GridVoltage,
GridFrequency,
ACOutputVoltage,
ACOutputFrequency,
ACOutputApparentPower,
ACOutputActivePower,
OutputLoadPercent,
BatteryVoltage,
BatteryVoltageSCC,
BatteryVoltageSCC2,
BatteryDischargingCurrent,
BatteryChargingCurrent,
BatteryCapacity,
HeatSinkTemp,
MPPT1ChargerTemp,
MPPT2ChargerTemp,
PV1InputPower,
PV2InputPower,
PV1InputVoltage,
PV2InputVoltage,
MPPT1ChargerStatus,
MPPT2ChargerStatus,
BatteryPowerDirection,
DCACPowerDirection,
LinePowerDirection,
LoadConnected) VALUES""", [[
client_time,
round(time()),
home_id,
grid_voltage,
grid_freq,
ac_output_voltage,
ac_output_freq,
ac_output_apparent_power,
ac_output_active_power,
output_load_percent,
battery_voltage,
battery_voltage_scc,
battery_voltage_scc2,
battery_discharge_current,
battery_charge_current,
battery_capacity,
inverter_heat_sink_temp,
mppt1_charger_temp,
mppt2_charger_temp,
pv1_input_power,
pv2_input_power,
pv1_input_voltage,
pv2_input_voltage,
mppt1_charger_status,
mppt2_charger_status,
battery_power_direction,
dc_ac_power_direction,
line_power_direction,
load_connected
]])
def get_consumed_energy(self, dt_from: datetime, dt_to: datetime) -> float:
rows = self.query('SELECT ClientTime, ACOutputActivePower FROM status'
' WHERE ClientTime >= %(from)s AND ClientTime <= %(to)s'
' ORDER BY ClientTime', {'from': dt_from, 'to': dt_to})
prev_time = None
prev_wh = 0
ws = 0 # watt-seconds
for t, wh in rows:
if prev_time is not None:
n = (t - prev_time).total_seconds()
ws += prev_wh * n
prev_time = t
prev_wh = wh
return ws / 3600 # convert to watt-hours
def get_intervals_by_condition(self,
dt_from: datetime,
dt_to: datetime,
cond_start: str,
cond_end: str) -> IntervalList:
rows = None
ranges = [[None, None]]
while rows is None or len(rows) > 0:
if ranges[len(ranges)-1][0] is None:
condition = cond_start
range_idx = 0
else:
condition = cond_end
range_idx = 1
rows = self.query('SELECT ClientTime FROM status '
f'WHERE ClientTime > %(from)s AND ClientTime <= %(to)s AND {condition}'
' ORDER BY ClientTime LIMIT 1',
{'from': dt_from, 'to': dt_to})
if not rows:
break
row = rows[0]
ranges[len(ranges) - 1][range_idx] = row[0]
if range_idx == 1:
ranges.append([None, None])
dt_from = row[0]
if ranges[len(ranges)-1][0] is None:
ranges.pop()
elif ranges[len(ranges)-1][1] is None:
ranges[len(ranges)-1][1] = dt_to - timedelta(seconds=1)
return ranges
def get_grid_connected_intervals(self, dt_from: datetime, dt_to: datetime) -> IntervalList:
return self.get_intervals_by_condition(dt_from, dt_to, 'GridFrequency > 0', 'GridFrequency = 0')
def get_grid_used_intervals(self, dt_from: datetime, dt_to: datetime) -> IntervalList:
return self.get_intervals_by_condition(dt_from,
dt_to,
"LinePowerDirection = 'Input'",
"LinePowerDirection != 'Input'")
def get_grid_consumed_energy(self, dt_from: datetime, dt_to: datetime) -> float:
PrevData = namedtuple('PrevData', 'time, pd, bat_chg, bat_dis, wh')
ws = 0 # watt-seconds
amps = 0 # amper-seconds
intervals = self.get_grid_used_intervals(dt_from, dt_to)
for dt_start, dt_end in intervals:
fields = ', '.join([
'ClientTime',
'DCACPowerDirection',
'BatteryChargingCurrent',
'BatteryDischargingCurrent',
'ACOutputActivePower'
])
rows = self.query(f'SELECT {fields} FROM status'
' WHERE ClientTime >= %(from)s AND ClientTime < %(to)s ORDER BY ClientTime',
{'from': dt_start, 'to': dt_end})
prev = PrevData(time=None, pd=None, bat_chg=None, bat_dis=None, wh=None)
for ct, pd, bat_chg, bat_dis, wh in rows:
if prev.time is not None:
n = (ct-prev.time).total_seconds()
ws += prev.wh * n
if pd == 'DC/AC':
amps -= prev.bat_dis * n
elif pd == 'AC/DC':
amps += prev.bat_chg * n
prev = PrevData(time=ct, pd=pd, bat_chg=bat_chg, bat_dis=bat_dis, wh=wh)
amps /= 3600
wh = ws / 3600
wh += amps*48
return wh
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