370 lines
14 KiB
Python
370 lines
14 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# SPDX-FileCopyrightText: : 2017-2023 The PyPSA-Eur Authors
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#
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# SPDX-License-Identifier: MIT
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"""
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Calculates for each network node the (i) installable capacity (based on land-
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use), (ii) the available generation time series (based on weather data), and
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(iii) the average distance from the node for onshore wind, AC-connected
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offshore wind, DC-connected offshore wind and solar PV generators. In addition
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for offshore wind it calculates the fraction of the grid connection which is
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under water.
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.. note:: Hydroelectric profiles are built in script :mod:`build_hydro_profiles`.
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Relevant settings
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-----------------
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.. code:: yaml
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snapshots:
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atlite:
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nprocesses:
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renewable:
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{technology}:
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cutout: corine: grid_codes: distance: natura: max_depth:
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max_shore_distance: min_shore_distance: capacity_per_sqkm:
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correction_factor: min_p_max_pu: clip_p_max_pu: resource:
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.. seealso::
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Documentation of the configuration file ``config/config.yaml`` at
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:ref:`snapshots_cf`, :ref:`atlite_cf`, :ref:`renewable_cf`
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Inputs
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------
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- ``data/bundle/corine/g250_clc06_V18_5.tif``: `CORINE Land Cover (CLC)
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<https://land.copernicus.eu/pan-european/corine-land-cover>`_ inventory on `44
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classes <https://wiki.openstreetmap.org/wiki/Corine_Land_Cover#Tagging>`_ of
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land use (e.g. forests, arable land, industrial, urban areas).
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.. image:: img/corine.png
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:scale: 33 %
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- ``data/bundle/GEBCO_2014_2D.nc``: A `bathymetric
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<https://en.wikipedia.org/wiki/Bathymetry>`_ data set with a global terrain
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model for ocean and land at 15 arc-second intervals by the `General
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Bathymetric Chart of the Oceans (GEBCO)
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<https://www.gebco.net/data_and_products/gridded_bathymetry_data/>`_.
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.. image:: img/gebco_2019_grid_image.jpg
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:scale: 50 %
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**Source:** `GEBCO
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<https://www.gebco.net/data_and_products/images/gebco_2019_grid_image.jpg>`_
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- ``resources/natura.tiff``: confer :ref:`natura`
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- ``resources/offshore_shapes.geojson``: confer :ref:`shapes`
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- ``resources/regions_onshore.geojson``: (if not offshore wind), confer
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:ref:`busregions`
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- ``resources/regions_offshore.geojson``: (if offshore wind), :ref:`busregions`
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- ``"cutouts/" + params["renewable"][{technology}]['cutout']``: :ref:`cutout`
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- ``networks/base.nc``: :ref:`base`
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Outputs
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-------
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- ``resources/profile_{technology}.nc`` with the following structure
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=================== ========== =========================================================
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Field Dimensions Description
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=================== ========== =========================================================
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profile bus, time the per unit hourly availability factors for each node
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------------------- ---------- ---------------------------------------------------------
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weight bus sum of the layout weighting for each node
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------------------- ---------- ---------------------------------------------------------
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p_nom_max bus maximal installable capacity at the node (in MW)
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------------------- ---------- ---------------------------------------------------------
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potential y, x layout of generator units at cutout grid cells inside the
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Voronoi cell (maximal installable capacity at each grid
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cell multiplied by capacity factor)
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------------------- ---------- ---------------------------------------------------------
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average_distance bus average distance of units in the Voronoi cell to the
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grid node (in km)
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------------------- ---------- ---------------------------------------------------------
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underwater_fraction bus fraction of the average connection distance which is
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under water (only for offshore)
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=================== ========== =========================================================
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- **profile**
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.. image:: img/profile_ts.png
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:scale: 33 %
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:align: center
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- **p_nom_max**
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.. image:: img/p_nom_max_hist.png
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:scale: 33 %
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:align: center
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- **potential**
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.. image:: img/potential_heatmap.png
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:scale: 33 %
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:align: center
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- **average_distance**
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.. image:: img/distance_hist.png
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:scale: 33 %
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:align: center
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- **underwater_fraction**
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.. image:: img/underwater_hist.png
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:scale: 33 %
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:align: center
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Description
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-----------
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This script functions at two main spatial resolutions: the resolution of the
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network nodes and their `Voronoi cells
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<https://en.wikipedia.org/wiki/Voronoi_diagram>`_, and the resolution of the
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cutout grid cells for the weather data. Typically the weather data grid is finer
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than the network nodes, so we have to work out the distribution of generators
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across the grid cells within each Voronoi cell. This is done by taking account
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of a combination of the available land at each grid cell and the capacity factor
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there.
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First the script computes how much of the technology can be installed at each
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cutout grid cell and each node using the `GLAES
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<https://github.com/FZJ-IEK3-VSA/glaes>`_ library. This uses the CORINE land use
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data, Natura2000 nature reserves and GEBCO bathymetry data.
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.. image:: img/eligibility.png
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:scale: 50 %
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:align: center
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To compute the layout of generators in each node's Voronoi cell, the installable
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potential in each grid cell is multiplied with the capacity factor at each grid
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cell. This is done since we assume more generators are installed at cells with a
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higher capacity factor.
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.. image:: img/offwinddc-gridcell.png
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:scale: 50 %
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:align: center
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.. image:: img/offwindac-gridcell.png
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:scale: 50 %
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:align: center
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.. image:: img/onwind-gridcell.png
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:scale: 50 %
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:align: center
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.. image:: img/solar-gridcell.png
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:scale: 50 %
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:align: center
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This layout is then used to compute the generation availability time series from
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the weather data cutout from ``atlite``.
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The maximal installable potential for the node (`p_nom_max`) is computed by
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adding up the installable potentials of the individual grid cells.
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If the model comes close to this limit, then the time series may slightly
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overestimate production since it is assumed the geographical distribution is
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proportional to capacity factor.
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"""
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import functools
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import logging
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import time
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import atlite
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import geopandas as gpd
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import numpy as np
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import pandas as pd
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import xarray as xr
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from _helpers import configure_logging
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from dask.distributed import Client
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from pypsa.geo import haversine
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from shapely.geometry import LineString
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logger = logging.getLogger(__name__)
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if __name__ == "__main__":
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if "snakemake" not in globals():
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from _helpers import mock_snakemake
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snakemake = mock_snakemake("build_renewable_profiles", technology="solar")
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configure_logging(snakemake)
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nprocesses = int(snakemake.threads)
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noprogress = snakemake.config["run"].get("disable_progressbar", True)
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noprogress = noprogress or not snakemake.config["atlite"]["show_progress"]
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params = snakemake.params.renewable[snakemake.wildcards.technology]
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resource = params["resource"] # pv panel params / wind turbine params
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correction_factor = params.get("correction_factor", 1.0)
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capacity_per_sqkm = params["capacity_per_sqkm"]
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if isinstance(params.get("corine", {}), list):
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params["corine"] = {"grid_codes": params["corine"]}
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if correction_factor != 1.0:
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logger.info(f"correction_factor is set as {correction_factor}")
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if nprocesses > 1:
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client = Client(n_workers=nprocesses, threads_per_worker=1)
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else:
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client = None
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sns = pd.date_range(freq="h", **snakemake.config["snapshots"])
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cutout = atlite.Cutout(snakemake.input.cutout).sel(time=sns)
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regions = gpd.read_file(snakemake.input.regions)
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assert not regions.empty, (
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f"List of regions in {snakemake.input.regions} is empty, please "
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"disable the corresponding renewable technology"
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)
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# do not pull up, set_index does not work if geo dataframe is empty
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regions = regions.set_index("name").rename_axis("bus")
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buses = regions.index
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res = params.get("excluder_resolution", 100)
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excluder = atlite.ExclusionContainer(crs=3035, res=res)
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if params["natura"]:
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excluder.add_raster(snakemake.input.natura, nodata=0, allow_no_overlap=True)
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corine = params.get("corine", {})
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if "grid_codes" in corine:
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codes = corine["grid_codes"]
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excluder.add_raster(snakemake.input.corine, codes=codes, invert=True, crs=3035)
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if corine.get("distance", 0.0) > 0.0:
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codes = corine["distance_grid_codes"]
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buffer = corine["distance"]
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excluder.add_raster(
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snakemake.input.corine, codes=codes, buffer=buffer, crs=3035
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)
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if params.get("ship_threshold"):
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shipping_threshold = (
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params["ship_threshold"] * 8760 * 6
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) # approximation because 6 years of data which is hourly collected
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func = functools.partial(np.less, shipping_threshold)
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excluder.add_raster(
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snakemake.input.ship_density, codes=func, crs=4326, allow_no_overlap=True
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)
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if params.get("max_depth"):
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# lambda not supported for atlite + multiprocessing
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# use named function np.greater with partially frozen argument instead
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# and exclude areas where: -max_depth > grid cell depth
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func = functools.partial(np.greater, -params["max_depth"])
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excluder.add_raster(snakemake.input.gebco, codes=func, crs=4326, nodata=-1000)
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if "min_shore_distance" in params:
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buffer = params["min_shore_distance"]
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excluder.add_geometry(snakemake.input.country_shapes, buffer=buffer)
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if "max_shore_distance" in params:
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buffer = params["max_shore_distance"]
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excluder.add_geometry(
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snakemake.input.country_shapes, buffer=buffer, invert=True
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)
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kwargs = dict(nprocesses=nprocesses, disable_progressbar=noprogress)
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if noprogress:
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logger.info("Calculate landuse availabilities...")
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start = time.time()
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availability = cutout.availabilitymatrix(regions, excluder, **kwargs)
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duration = time.time() - start
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logger.info(f"Completed availability calculation ({duration:2.2f}s)")
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else:
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availability = cutout.availabilitymatrix(regions, excluder, **kwargs)
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# For Moldova and Ukraine: Overwrite parts not covered by Corine with
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# externally determined available areas
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if "availability_matrix_MD_UA" in snakemake.input.keys():
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availability_MDUA = xr.open_dataarray(
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snakemake.input["availability_matrix_MD_UA"]
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)
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availability.loc[availability_MDUA.coords] = availability_MDUA
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area = cutout.grid.to_crs(3035).area / 1e6
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area = xr.DataArray(
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area.values.reshape(cutout.shape), [cutout.coords["y"], cutout.coords["x"]]
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)
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potential = capacity_per_sqkm * availability.sum("bus") * area
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func = getattr(cutout, resource.pop("method"))
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if client is not None:
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resource["dask_kwargs"] = {"scheduler": client}
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capacity_factor = correction_factor * func(capacity_factor=True, **resource)
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layout = capacity_factor * area * capacity_per_sqkm
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profile, capacities = func(
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matrix=availability.stack(spatial=["y", "x"]),
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layout=layout,
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index=buses,
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per_unit=True,
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return_capacity=True,
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**resource,
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)
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logger.info(f"Calculating maximal capacity per bus")
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p_nom_max = capacity_per_sqkm * availability @ area
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logger.info("Calculate average distances.")
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layoutmatrix = (layout * availability).stack(spatial=["y", "x"])
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coords = cutout.grid[["x", "y"]]
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bus_coords = regions[["x", "y"]]
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average_distance = []
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centre_of_mass = []
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for bus in buses:
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row = layoutmatrix.sel(bus=bus).data
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nz_b = row != 0
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row = row[nz_b]
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co = coords[nz_b]
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distances = haversine(bus_coords.loc[bus], co)
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average_distance.append((distances * (row / row.sum())).sum())
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centre_of_mass.append(co.values.T @ (row / row.sum()))
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average_distance = xr.DataArray(average_distance, [buses])
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centre_of_mass = xr.DataArray(centre_of_mass, [buses, ("spatial", ["x", "y"])])
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ds = xr.merge(
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[
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(correction_factor * profile).rename("profile"),
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capacities.rename("weight"),
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p_nom_max.rename("p_nom_max"),
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potential.rename("potential"),
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average_distance.rename("average_distance"),
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]
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)
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if snakemake.wildcards.technology.startswith("offwind"):
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logger.info("Calculate underwater fraction of connections.")
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offshore_shape = gpd.read_file(snakemake.input["offshore_shapes"]).unary_union
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underwater_fraction = []
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for bus in buses:
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p = centre_of_mass.sel(bus=bus).data
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line = LineString([p, regions.loc[bus, ["x", "y"]]])
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frac = line.intersection(offshore_shape).length / line.length
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underwater_fraction.append(frac)
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ds["underwater_fraction"] = xr.DataArray(underwater_fraction, [buses])
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# select only buses with some capacity and minimal capacity factor
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ds = ds.sel(
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bus=(
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(ds["profile"].mean("time") > params.get("min_p_max_pu", 0.0))
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& (ds["p_nom_max"] > params.get("min_p_nom_max", 0.0))
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)
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)
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if "clip_p_max_pu" in params:
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min_p_max_pu = params["clip_p_max_pu"]
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ds["profile"] = ds["profile"].where(ds["profile"] >= min_p_max_pu, 0)
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ds.to_netcdf(snakemake.output.profile)
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if client is not None:
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client.shutdown()
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