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@github-actions github-actions released this 25 Apr 14:22
v0.20.0
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llucax Leandro Lucarella
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Learn about vigilant mode.
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Learn about vigilant mode.

Release Notes

Summary

The main feature in the release is the high-level interface. Now all base pipeline actors are created automatically when the SDK is initialized, and the wrapper classes can be accessed directly via frequenz.sdk.microgrid: logical_meter(), battery_pool() and ev_charger_pool().

Upgrading

  • Battery power is no longer available through the LogicalMeter, but through the BatteryPool (#338)

    battery_power_receiver = microgrid.battery_pool().power.new_receiver()

  • Formulas composition has changed (#327)

    • Receivers from formulas are no longer composable.
    • Formula composition is now done by composing FormulaEngine instances.
    • Automatic formulas from the logical meter and *pools, are now properties, and return FormulaEngine instances, which can be composed further, or can provide a receiver to fetch values.
    grid_power_receiver = microgrid.logical_meter().grid_power.new_receiver()

self._inverter_power = (
    microgrid.logical_meter().pv_power
    + microgrid.battery_pool().power
).build("inverter_power")

inverter_power_receiver = self._inverter_power.new_receiver()

  • Update BatteryStatus to mark battery with unknown capacity as not working (#263)

  • The channels dependency was updated to v0.14.0 (#292)

  • Some properties for PowerDistributingActor results were renamed to be more consistent between Success and PartialFailure:

    • The Success.used_batteries property was renamed to succeeded_batteries.
    • The PartialFailure.success_batteries property was renamed to succeeded_batteries.
    • The succeed_power property was renamed to succeeded_power for both Success and PartialFailure.

  • MovingWindow

    • The class is now publicly available in the frequenz.sdk.timeseries package.

    • Accept the size parameter as timedelta instead of int (#269).

      This change allows users to define the time span of the moving window more intuitively, representing the duration over which samples will be stored.

    • The input data will be resampled if a resampler_config is passed (#269).

      This allows controlling the granularity of the samples to be stored in the underlying buffer.

      Note that the parameter sampling_period has been renamed to input_sampling_period to better distinguish it from the sampling period parameter in the resampler_config.

    • Rename the constructor argument window_alignment to align_to and change the default to UNIX_EPOCH. This is to make it more consistent with the ResamplerConfig.

  • Resampler

    • The ResamplerConfig class is now publicly available in the frequenz.sdk.timeseries package.

    • The ResamplerConfig now takes the resampling period as a timedelta. The configuration was renamed from resampling_period_s to resampling_period accordingly.

    • The SourceProperties of the resampler now uses a timedelta for the input sampling period. The attribute was renamed from sampling_period_s to sampling_period accordingly.

    • The periods are now aligned to the UNIX_EPOCH by default.

      To use the old behaviour (aligning to the time the resampler was created), pass align_to=None to the ResamplerConfig.

New Features

  • The core data-pipeline actors are now created automatically (#270).

    This eliminates a lot of boiler plate code and makes it much simpler to deploy apps.

    For example:

    async def run():
    await microgrid.initialize(
        host=HOST, port=PORT, resampler_config=ResamplerConfig(resampling_period_s=1.0)
    )
    grid_power = microgrid.logical_meter().grid_power()

  • The Result class (and subclasses) for the PowerDistributingActor are now dataclasses, so logging them will produce a more detailed output.

  • The Resampler can now can align the resampling period to an arbitrary datetime.

    This can be configured via the new align_to option in the ResamplerConfig. By default the resampling period is aligned to the UNIX_EPOCH.

Bug Fixes

  • Change PowerDistributor to use all batteries when none are working (#258)

  • Update the ordered ring buffer used by the MovingWindow to fix the len() function so that it returns a value equal to or greater than zero, as expected (#274)

What's Changed

New Contributors

Full Changelog: v0.19.0...v0.20.0

Contributors

dependabot, shsms, and 5 other contributors
Assets 4
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