124 lines
4.0 KiB
Python
124 lines
4.0 KiB
Python
import numpy as np
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import yaml
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from Utilities.Time import get_start_time
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from Utilities.LoadProfile import get_load_profiles
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from Utilities.BESS import (
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initialise_SoC,
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initial_site_assignment,
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discharge_bess,
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predict_swap_time,
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update_cycle_SoC,
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)
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import matplotlib.pyplot as pl
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import pandas as pd
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from concurrent.futures import ThreadPoolExecutor
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# read config file
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c = yaml.safe_load(open("YAMLs/config.yml"))
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# read BESS data
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bess_data = yaml.safe_load(open(c["paths"]["bess"]))
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## simulation time setup
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# get current time
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c["sim_start_time"] = get_start_time()
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# get time step in minutes, then convert to seconds
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dt = c["sim_time"]["time_step_minutes"] * 60
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# compute end time based on duration in days
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duration = c["sim_time"]["duration_days"] * 24 * 60 * 60
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c["sim_end_time"] = c["sim_start_time"] + duration
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timestamps = np.arange(c["sim_start_time"], c["sim_end_time"] + 1, dt)
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# batch process hours in seconds
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c["sim_time"]["batch_process_seconds"] = c["sim_time"]["batch_process_hours"] * 60 * 60
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# load site info
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c["site_info"] = yaml.safe_load(open(c["paths"]["site_info"]))
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def generate_and_cache_profiles(c, dt):
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"""Generates load profiles for all sites and caches them."""
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return get_load_profiles(
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c, dt, c["sim_start_time"], c["sim_time"]["batch_process_seconds"]
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)
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# initialise BESS
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bess_data = initialise_SoC(bess_data)
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bess_data = initial_site_assignment(c, bess_data)
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# bess SoC dataframe
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bess_soc_since_start = pd.DataFrame(
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columns=[unit["name"] for unit in bess_data["units"]]
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)
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# bess SoC dictionary, meant to track SoC progress over each cycle.
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# resets after each charging cycle. This is for predicting swap times.
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init_df = pd.DataFrame(columns=["Timestamp", "SoC"])
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bess_soc_for_cycle = {unit["name"]: init_df for unit in bess_data["units"]}
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# get initial load profiles
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cumulative_load_profiles = get_load_profiles(
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c, dt, c["sim_start_time"], c["sim_time"]["batch_process_seconds"]
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)
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# async function is running
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is_running_in_async = False
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# loop through
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with ThreadPoolExecutor() as executor:
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for i in range(0, len(timestamps)):
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# start generating load profiles 200 seconds before data required
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if len(cumulative_load_profiles) <= len(timestamps):
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if is_running_in_async is False:
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# generate load profiles
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future = executor.submit(generate_and_cache_profiles, c, dt)
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is_running_in_async = True
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else:
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is_running_in_async = False
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# discharge BESS for each site
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for site in c["site_info"]["sites"]:
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site_name = site["name"]
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discharge_power = cumulative_load_profiles[site_name].iloc[i]
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bess_data = discharge_bess(bess_data, site_name, dt, discharge_power)
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temp_soc = [unit["SoC"] for unit in bess_data["units"]]
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# append SoC to dataframe
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bess_soc_since_start = pd.concat(
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[
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bess_soc_since_start,
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pd.DataFrame(
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[temp_soc],
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columns=bess_soc_since_start.columns,
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index=[timestamps[i]],
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),
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],
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axis=0,
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)
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# update cycle SoC
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# this is for predicting swap times
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bess_soc_for_cycle = update_cycle_SoC(bess_data, bess_soc_for_cycle, timestamps)
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# predict swap times
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swap_times = predict_swap_time(bess_soc_for_cycle)
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# add to cumulative load profiles
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# check if future exists and is done
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if is_running_in_async:
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if future.done():
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load_profiles = future.result()
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cumulative_load_profiles = pd.concat(
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[
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cumulative_load_profiles,
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load_profiles,
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],
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axis=0,
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)
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print(len(cumulative_load_profiles), "load profiles generated")
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is_running_in_async = False
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pl.plot(cumulative_load_profiles)
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pl.show()
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pl.plot(bess_soc_since_start)
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