Live LTM - minimal version

This notebook creates a model by using only the Python interface without any input files.

import os
from pyltmapi import LtmSession
from pyltm import util, Area, DCLine, Load, AggregatedHydroModule, Inflow, MarketStep
from pathlib import Path

# import logging
# logging.basicConfig(level=logging.DEBUG)

ltm_core_path = os.environ.get(
    "LTM_CORE_PATH", str(Path("~").expanduser().joinpath("ltm/release/bin/"))
)
license_file = os.environ.get(
    "LTM_CORE_LICENSE_FILE", str(Path("~").expanduser().joinpath("ltm/ltm-license.dat"))
)

sim_period = ("2026-W01", "2027-W01")
hist_period = ("1980-01-01T00:00:00Z", "1990-01-01T00:00:00Z")

with LtmSession("live_ltm_minimal", ltm_core_path, overwrite_session=True) as session:
    area1 = Area(name="area1")
    area2 = Area("area2")
    session.model.add(area1)
    session.model.add(area2)

    dcline = DCLine("dcline1")
    dcline.forward_capacity = util.make_constant_txy(200)
    dcline.backward_capacity = util.make_constant_txy(200)
    session.model.add(dcline)

    session.connect(area1, dcline)
    session.connect(dcline, area2)

    load1 = Load("load1")
    load2 = Load("load2")
    load1.capacity = util.make_constant_txy(100)
    load2.capacity = util.make_constant_txy(50)
    session.model.add(load1)
    session.model.add(load2)

    session.connect(load1, area1)
    session.connect(load2, area2)

    constant = Inflow("constant")
    constant.series = util.make_constant_txy(1.0)
    session.model.add(constant)

    aggregated = AggregatedHydroModule("aggregated_hydro")
    aggregated.lower_production_limits = util.make_constant_txy(1.0)
    aggregated.upper_production_limits = util.make_constant_txy(100.0)
    aggregated.lower_reservoir_limits = util.make_constant_txy(0.1)
    aggregated.upper_reservoir_limits = util.make_constant_txy(10000.0)
    aggregated.regulated_power_inflow = util.make_constant_txy(350.0, 10)
    aggregated.unregulated_power_inflow = util.make_constant_txy(50.0, 10)
    aggregated.reservoir_energy = 10000
    aggregated.start_reservoir_energy = 100
    aggregated.station_power = 100
    session.model.add(aggregated)
    session.connect(aggregated, area2)

    ms = MarketStep("market_step")
    ms.price = util.make_constant_txy(260.0)
    ms.capacity = util.make_constant_txy(150.0)
    session.model.add(ms)
    session.connect(ms, area1)

    session.model.global_settings.output_path = "live_minimal_run"
    session.model.global_settings.ltm_license_file_path = license_file

    session.model.global_settings.simulation_period = util.make_txy_period(*sim_period)
    session.model.global_settings.historical_period = util.make_txy_period(*hist_period)
    session.model.global_settings.timesteps_per_week = 56

    last_return_code, program_results = session.run()

    if last_return_code == 0:
        print("Success")
    else:
        print("Failure")

Success