CHP

Optimize CHP (combined heat & power) to generate electricity, high & low temperature heat from natural gas using epl.CHP:

The epl.CHP model can be configured with electric, high and low temperature thermal efficiencies.

This allows modelling both gas engines and gas turbines.

When optimizing, we can use interval data for the high and low temperature loads. These thermal loads will be met by gas boilers if the CHP chooses not to generate, or cannot meet thermal demands. High temperature heat can be let-down into low temperature heat.

The epl.CHP is allowed to dump both high temperature and low temperature heat.

The high and low temperature heat demands are supplied alongside the electricity prices when optimizing:

import energypylinear as epl

#  100 MWe gas turbine
asset = epl.CHP(
    electric_power_max_mw=100,
    electric_power_min_mw=50,
    electric_efficiency_pct=0.3,
    high_temperature_efficiency_pct=0.5,
)

#  100 MWe gas engine
asset = epl.CHP(
    electric_power_max_mw=100,
    electric_power_min_mw=10,
    electric_efficiency_pct=0.4,
    high_temperature_efficiency_pct=0.2,
    low_temperature_efficiency_pct=0.2,
    electricity_prices=[100, 50, 200, -100, 0, 200, 100, -100],
    high_temperature_load_mwh=[100, 50, 200, 40, 0, 200, 100, 100],
    low_temperature_load_mwh=20,
)

simulation = asset.optimize()

assert all(
    simulation.results.columns
    == [
        "site-import_power_mwh",
        "site-export_power_mwh",
        "site-electricity_prices",
        "site-electricity_carbon_intensities",
        "site-high_temperature_load_mwh",
        "site-low_temperature_load_mwh",
        "site-low_temperature_generation_mwh",
        "site-gas_prices",
        "site-electric_load_mwh",
        "spill-electric_generation_mwh",
        "spill-electric_load_mwh",
        "spill-high_temperature_generation_mwh",
        "spill-low_temperature_generation_mwh",
        "spill-high_temperature_load_mwh",
        "spill-low_temperature_load_mwh",
        "spill-gas_consumption_mwh",
        "chp-electric_generation_mwh",
        "chp-gas_consumption_mwh",
        "chp-high_temperature_generation_mwh",
        "chp-low_temperature_generation_mwh",
        "boiler-high_temperature_generation_mwh",
        "boiler-gas_consumption_mwh",
        "valve-high_temperature_load_mwh",
        "valve-low_temperature_generation_mwh",
        "total-electric_generation_mwh",
        "total-electric_load_mwh",
        "total-high_temperature_generation_mwh",
        "total-low_temperature_generation_mwh",
        "total-high_temperature_load_mwh",
        "total-low_temperature_load_mwh",
        "total-gas_consumption_mwh",
        "total-electric_charge_mwh",
        "total-electric_discharge_mwh",
        "total-spills_mwh",
        "total-electric_loss_mwh",
        "site-electricity_balance_mwh",
    ]
)