Improvements for the multi-phase/line for devices:

[xservers-si]

Improvements to the UX for the multi-phase/line functionality for devices:

Layout:

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There are requests for support for as many devices as possible on any HACS power graph card almost everywhere on the Home Assistant forum.
This proposal:

• Relies on previous UX proposals to move the circled information closer to the centre of the graph to save vertical space Improvements to the UX for the grid indicator. #45 , Improvements to the UX for the PV indicator #46 , Improvements to the UX for the Home indicator. #47 .
• It addresses the use case of displaying a large number of devices while taking into account how multiphase systems work.
• With a width of 21:
  • up to 3x8 devices and 3x associated totals can be accommodated; or
  • up to 3x9 devices without associated totals.
• In my opinion, this would represent the ultimate power flow graph card.

The proposal:

• Accommodate a card with a maximum of three (1,2 or 3) lines of devices.
• Current YAML syntax:
  • Additional settings would be inserted between the device and entity levels: 'line' or 'phase'.
  • It may be something equivalent.
  • The YAML definition would be:

- device:
    - phase:             # <- indicate first line
      name: L1           # <- name for circle
      max_power: 7500    # <- max power in watts for arc calculation(s)
      colour: #AABBCC    # <- circle / text / icon color
      show_total: true   # <- show total or one device more
      enable_device_power_lines: false
      - entity:          # <- device definition
         (existing entity definition)

• Configuration toggles on each phase for:

  • Total on the 'Phase' level (if not selected, show one more device);
  • Enable device power lines' at the phase level (as it is now).

• Arcs for PV/battery power at the phase level, provided that the "max_power" in W per phase is defined.

• Vertical sum lines (blue, green and violet on example image) always shown.

• Home already supports the total at its level.

• Consideration:

  • If the device is connected in a three-phase delta configuration (three phases with 440 V connections between phases in Europe):
  • There should be three device definitions -> one for each phase.
  • Three associated entities for power are required for each phase.
  • If the total power for a delta-connected device is required:
    • This should be displayed as secondary information on each device phase.
    • This is a user configuration-level decision.
    • It is not limited by card design.
  • The problem is solved by design.

• My assumption is based on a three-phase system, but:

  • It may be sufficient to simply increase the number of devices shown, either with or without a group (phase) sum.
  • Group devices into three groups, with or without a group (phase) sum.
  • Use the three-phase system as mentioned, with or without a group (phase) sum.
  • Do anything else.

The example shows an artificial three-phase system.

• Three-phase system named L1, L2 and L3 (in Europe).
• With sum for each phase.
• No 'Device power lines'.
• The T.C. (heat pump) is connected to a three-phase system with a total power sum on phase L2 only.
• Arcs are presented as a percentage of the power from the PV/battery system.
• All other devices are connected to single phase.

If anything in this description is unclear, please ask.

P.S..
Yes, it is a tough requirement.
To maximise the success of any system, respect its users.