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CENACE.py
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CENACE.py
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#!/usr/bin/env python3
import urllib
from datetime import datetime, timedelta
from io import StringIO
from logging import Logger, getLogger
from zoneinfo import ZoneInfo
import pandas as pd
from bs4 import BeautifulSoup
from dateutil import tz
from requests import Response, Session
from electricitymap.contrib.config import ZONES_CONFIG
from electricitymap.contrib.lib.models.event_lists import (
ExchangeList,
ProductionBreakdownList,
TotalConsumptionList,
)
from electricitymap.contrib.lib.models.events import ProductionMix
from electricitymap.contrib.lib.types import ZoneKey
from parsers.lib.config import refetch_frequency
from parsers.lib.exceptions import ParserException
MX_PRODUCTION_URL = (
"https://www.cenace.gob.mx/SIM/VISTA/REPORTES/EnergiaGenLiqAgregada.aspx"
)
MX_EXCHANGE_URL = "https://www.cenace.gob.mx/Paginas/Publicas/Info/DemandaRegional.aspx"
EXCHANGES = {
"MX-NO->MX-NW": "IntercambioNTE-NOR",
"MX-NE->MX-NO": "IntercambioNES-NTE",
"MX-NE->MX-OR": "IntercambioNES-ORI",
"MX-OR->MX-PN": "IntercambioORI-PEN",
"MX-CE->MX-OR": "IntercambioORI-CEL",
"MX-OC->MX-OR": "IntercambioOCC-ORI",
"MX-CE->MX-OC": "IntercambioOCC-CEL",
"MX-NE->MX-OC": "IntercambioNES-OCC",
"MX-NO->MX-OC": "IntercambioNTE-OCC",
"MX-NW->MX-OC": "IntercambioNOR-OCC",
"MX-BC->US-CAL-CISO": "IntercambioUSA-BCA",
"MX-NO->US-TEX-ERCO": "IntercambioUSA-NTE",
"MX-NE->US-TEX-ERCO": "IntercambioUSA-NES",
"BZ->MX-PN": "IntercambioPEN-BEL",
}
REGION_MAPPING = {
"MX-BC": "BCA",
"MX-BCS": "BCS",
"MX-NW": "NOR",
"MX-NO": "NTE",
"MX-NE": "NES",
"MX-OC": "OCC",
"MX-CE": "CEL",
"MX-OR": "ORI",
"MX-PN": "PEN",
}
MAPPING = {
"Eolica": "wind",
"Fotovoltaica": "solar",
"Biomasa": "biomass",
"Carboelectrica": "coal",
"Ciclo Combinado": "gas",
"Geotermoelectrica": "geothermal",
"Hidroelectrica": "hydro",
"Nucleoelectrica": "nuclear",
"Combustion Interna": "unknown",
"Termica Convencional": "unknown",
"Turbo Gas": "gas",
}
SOURCE = "cenace.gob.mx"
TIMEZONE = ZoneInfo("America/Tijuana")
# cache where the data for whole months is stored as soon as it has been fetched once
DATA_CACHE = {}
def parse_date(date, hour):
tzoffset = tz.tzoffset("CST", -3600 * 6)
dt = datetime.strptime(date, "%d/%m/%Y")
dt = dt.replace(hour=int(hour) - 1, tzinfo=tzoffset)
return dt
def fetch_csv_for_date(dt, session: Session | None = None):
"""
Fetches the whole month of the give datetime.
returns the data as a DataFrame.
throws an exception data is not available.
"""
session = session or Session()
# build the parameters and fill in the requested date
# TODO find something prettier than string concatenation which works
# TODO find out whether VIEWSTATE stays valid or needs to be fetched before making the post request
datestr = dt.strftime("%m/%d/%Y")
parameters = {
"__EVENTTARGET": "",
"__EVENTARGUMENT": "",
"__VIEWSTATE": "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"__VIEWSTATEGENERATOR": "5B6503FA",
"__EVENTVALIDATION": "/wEdABPIFpMnlAgkSZvMhE+vOQYa0gsvRcXibJrviW3Dmsx0G+jYKkdCU41GOhiZPOlFyBecIegvepvm5r48BtByTWSkIC/PSPgmtogq3vXUp+YNvsMPaGT0F8ZMY05tsTP7KXY5p77wXhhk2nxxmhBw8yYO6yoq09PpCPpnHhKGI5XXqN0NAXFS9Kcv7U1TgXuCACxTET4yjIt6nVt9qCHIyzbla16U6SvCvrhBDl88f4l+A2AwM+Efhx0eY7z5UUNUDwDoCL/OENuuNNFPCRAmSpT1/nxKmb/ucFs0tCWRV4G4iLScixGy8IhVeNkOJJPR8q4msGM8DGO6o6g/gMszmMRrbD50rXo0f8u6b2IB+RzVpsHxVceaRLBN56ddyVdqKV1RL0jZlTtb1Prpo6YdA7cH301O2Ez19CJOtDoyAWUZ982dVJTM6fLOsQokHcEDIxQ=",
"ctl00_ContentPlaceHolder1_FechaConsulta_ClientState": '{"minDateStr":"'
+ datestr
+ '+0:0:0","maxDateStr":"'
+ datestr
+ '+0:0:0"}',
"ctl00$ContentPlaceHolder1$GridRadResultado$ctl00$ctl04$gbccolumn.x": "10",
"ctl00$ContentPlaceHolder1$GridRadResultado$ctl00$ctl04$gbccolumn.y": "9",
}
# urlencode the data in the weird form which is expected by the API
# plus signs MUST be contained in the date strings but MAY NOT be contained in the VIEWSTATE...
data = urllib.parse.urlencode(parameters, quote_via=urllib.parse.quote).replace(
"%2B0", "+0"
)
response = session.post(
MX_PRODUCTION_URL,
data=data,
headers={
"Content-Type": "application/x-www-form-urlencoded",
},
)
response.raise_for_status()
# API returns normally status 200 but content type text/html when data is missing
if (
"Content-Type" not in response.headers
or response.headers["Content-Type"] != "application/octet-stream"
):
raise Exception(
f"Error while fetching csv for date {datestr}: No CSV was returned by the API. Probably the data for this date has not yet been published."
)
# skip non-csv data, the header starts with "Sistema"
csv_str = response.text
csv_str = csv_str[csv_str.find('"Sistema"') :]
return pd.read_csv(
StringIO(csv_str), parse_dates={"instante": [1, 2]}, date_parser=parse_date
)
def convert_production(series: pd.Series) -> ProductionMix:
mix = ProductionMix()
for name, val in series.iteritems():
name = name.strip()
if isinstance(val, float | int):
mix.add_value(MAPPING.get(name, "unknown"), val)
return mix
def fetch_production(
zone_key: ZoneKey,
session: Session | None = None,
target_datetime: datetime | None = None,
logger: Logger = getLogger(__name__),
) -> list:
if zone_key != "MX":
raise ValueError(f"MX parser cannot fetch production for zone {zone_key}")
if target_datetime is None:
raise ValueError(
"Parser only supports fetching historical production data, please specify a terget_datetime in the past"
)
# retrieve data for the month either from the cache or fetch it
cache_key = target_datetime.strftime("%Y-%m")
if cache_key in DATA_CACHE:
df = DATA_CACHE[cache_key]
else:
df = fetch_csv_for_date(target_datetime, session=session)
DATA_CACHE[cache_key] = df
production = ProductionBreakdownList(logger)
for _idx, series in df.iterrows():
production.append(
zoneKey=zone_key,
datetime=series["instante"].to_pydatetime(),
production=convert_production(series),
source=SOURCE,
)
return production.to_list()
def fetch_MX_exchange(sorted_zone_keys: ZoneKey, s: Session) -> float:
"""Finds current flow between two Mexican control areas."""
req = s.get(MX_EXCHANGE_URL, headers={"User-Agent": "Mozilla/5.0"})
soup = BeautifulSoup(req.text, "html.parser")
exchange_div = soup.find("div", attrs={"id": EXCHANGES[sorted_zone_keys]})
val = exchange_div.text
# cenace html uses unicode hyphens instead of minus signs and , as thousand separator
trantab = str.maketrans({chr(8208): chr(45), ",": ""})
val = val.translate(trantab)
flow = float(val)
if sorted_zone_keys in ["BZ->MX-PN", "MX-CE->MX-OR", "MX-CE->MX-OC"]:
# reversal needed for these zones due to EM ordering
flow = -1 * flow
return flow
def fetch_exchange(
zone_key1: ZoneKey,
zone_key2: ZoneKey,
session: Session | None = None,
target_datetime: datetime | None = None,
logger: Logger = getLogger(__name__),
) -> list:
"""Requests the last known power exchange (in MW) between two zones."""
sorted_zone_keys = ZoneKey("->".join(sorted([zone_key1, zone_key2])))
if sorted_zone_keys not in EXCHANGES:
raise NotImplementedError(f"Exchange pair not supported: {sorted_zone_keys}")
s = session or Session()
netflow = fetch_MX_exchange(sorted_zone_keys, s)
exchange = ExchangeList(logger)
exchange.append(
zoneKey=sorted_zone_keys,
datetime=datetime.now(tz=TIMEZONE),
netFlow=netflow,
source=SOURCE,
)
return exchange.to_list()
@refetch_frequency(timedelta(hours=1))
def fetch_consumption(
zone_key: ZoneKey,
session: Session | None = None,
target_datetime: datetime | None = None,
logger: Logger = getLogger(__name__),
) -> list:
"""Gets the consumption data for a region using the live dashboard."""
# TODO the calls could be improved since we can get all the data in one call.
if session is None:
session = Session()
if target_datetime is not None:
raise NotImplementedError("This parser is not yet able to parse past dates")
response: Response = session.get(
MX_EXCHANGE_URL, headers={"User-Agent": "Mozilla/5.0"}
)
if not response.ok:
raise ParserException(
"CENACE.py",
f"[{response.status_code}] Demand dashboard could not be reached: {response.text}",
zone_key,
)
soup = BeautifulSoup(response.text, "html.parser")
demand_td = soup.find(
"td", attrs={"id": f"Demanda{REGION_MAPPING[zone_key]}", "class": "num"}
)
if demand_td is None:
raise ParserException("CENACE.py", "Could not find demand cell", zone_key)
demand = float(demand_td.text.replace(",", ""))
timezone = ZONES_CONFIG[zone_key].get("timezone")
if timezone is None:
timezone = "America/Mexico_City"
consumption_list = TotalConsumptionList(logger)
consumption_list.append(
zoneKey=zone_key,
datetime=datetime.now(tz=ZoneInfo(timezone)),
consumption=demand,
source="cenace.gob.mx",
)
return consumption_list.to_list()
if __name__ == "__main__":
print(fetch_production("MX", target_datetime=datetime(year=2019, month=7, day=1)))
print("fetch_exchange(MX-NO, MX-NW)")
print(fetch_exchange("MX-NO", "MX-NW"))
print("fetch_exchange(MX-OR, MX-PN)")
print(fetch_exchange("MX-OR", "MX-PN"))
print("fetch_exchange(MX-NE, MX-OC)")
print(fetch_exchange("MX-NE", "MX-OC"))
print("fetch_exchange(MX-NE, MX-NO)")
print(fetch_exchange("MX-NE", "MX-NO"))
print("fetch_exchange(MX-OC, MX-OR)")
print(fetch_exchange("MX-OC", "MX-OR"))
print("fetch_exchange(MX-NE, US-TEX-ERCO)")
print(fetch_exchange("MX-NE", "US-TEX-ERCO"))
print("fetch_exchange(MX-CE, MX-OC)")
print(fetch_exchange("MX-CE", "MX-OC"))
print("fetch_exchange(MX-PN, BZ)")
print(fetch_exchange("MX-PN", "BZ"))
print("fetch_exchange(MX-NO, MX-OC)")
print(fetch_exchange("MX-NO", "MX-OC"))
print("fetch_exchange(MX-NO, US-TEX-ERCO)")
print(fetch_exchange("MX-NO", "US-TEX-ERCO"))
print("fetch_exchange(MX-NE, MX-OR)")
print(fetch_exchange("MX-NE", "MX-OR"))
print("fetch_exchange(MX-CE, MX-OR)")
print(fetch_exchange("MX-CE", "MX-OR"))