GlenDimplex SGReady Heatpump >>> Lock/ID1/ID2 Support

[stevoboy]

I would like to request EVCC to work with our SG Ready Heatpump.

Currently already working Loadpoint>Status> Enable (No. 1):

• Lock/Unlock the heatpump for cheap net tarifs and PV surplus using EVCC to trigger EVU lock/unlock.
• When PV surplus exceeds defined PV surplus enable threshold (e.g. -1000) for a enable delay EVU lock is disengaged. Heatpump starts running in "Standard" Modus > Yellow" for the duration defined in disable delay/disable threshold.

Feature request:

1. Loadpoint>Status> Enable (No. 2): Being able to define an enable threshold (e.g. -4000). If this threshold is exceed for the enable delay time, a boolean datapoint is set to true. This datapoint I would connect to the ID1 datapoint of the heatpump to go into "Anhebungs Modus > Green". In case the PV surplus is falling below the disable threshold the boolean value shall be set to false after the defined time in the disable delay. The "Anhebungs Modus > Green" is switched off.
2. Loadpoint>Status> Enable (No. 3): Being able to define a disable threshold (e.g. -2000). If this threshold is fallen short for the disable delay time, a boolean datapoint is set to true. This datapoint I would connect to the ID2 datapoint of the heatpump to go into "Absenkungs Modus > Red". In case the PV surplus is going above the enable threshold the boolean value shall be set to false after the defined time in the enable delay. The "Absenkungs Modu > Red" is switched off.

To be checked:
3. Since the heatpump decides itself, if and when it wants to run, when EVU lock is disengaged, EVCC should stop after a while waiting for the heatpump to turn on. Instead it should switch priority to other loadpoints to avoid wasting PV surplus. Example: Loadpoint>Status> Enable (No. 1) (Heatpump) is set to true at 9:30 AM when -1000 PV surplus is reached. The heatpump does not turn on because the house is warm enough. At 10:00 AM EVCC should recognize (loadpoint does not turn on) >>> Switch other loadpoint (e.g. BEV) on. Possibly heatpump loadpump could be turned off or left on until the heatpump wants to turn on or the PV surplus is gone.

Explaination of Dimplex SGReady Logic:
https://www.photovoltaikforum.com/core/attachment/122921-pv-funktion-smart-grid-kompatibilit%C3%A4tsmodus-i-d1-id2-pdf/

YAML code and node red code of currently working EVU lock/unlock

Charger:

• name: charger_wp
  type: custom
  status:
  source: mqtt
  topic: evccwp/state
  enable:
  source: mqtt
  topic: evccwp/chargerenable
  maxcurrent:
  source: mqtt
  topic: evccwp/current
  enabled:
  source: mqtt
  topic: evccwp/charging

Vehicles:

• name: vehicle_Waermepumpe
  type: template
  template: offline
  title: Wärmepumpe Betriebsfreigabe
  icon: heatpump
  mode: pv

Loadpoints

• title: Wärmepumpe
  charger: charger_wp
  meter: meter_wp
  mode: pv
  vehicle: vehicle_Waermepumpe
  priority: 4
  enable:
  threshold: -1000
  delay: 10m
  disable:
  threshold: 0
  delay: 360m

[andig]

to trigger EVU lock/unlock.

That sounds like dimm, not boost? The other SG ready chargers boost the heatpump when PV is available and return to normal when not. Locking sounds like your home would get cold which is not what you'd normally want?

That said, you can build this yourself using #17735.

2/3: that's part of the loadpoint config.

EVCC should stop after a while waiting for the heatpump to turn on.

evcc doesn't wait. As long as power is available, other loadpoints will be serviced.

/cc @VolkerK62

[stevoboy]

The SGReady Logic has three states:

ID1=on ID2=off > Boost=Anhebung=Green

ID1=off ID2=off > Normal=Normal=Yellow

ID=off ID2=on > Dim=Absenkung=Red

There is also
ID1=On ID2=On > Superboost=Anhebung mit zusätzlich Heizstab=Dark Green.
I would ignore this as nobody wants to use the expensive Heizstab.

I in addition lock the Heatpump via EVU lock when there is little PV Überschuss and Energy prices are high. I unlock via script if the room temperature falls below a certain threshold (eg 19 degrees). Then the heatpump can work regardless the conditions above until the minimum temperature is reached. I would not need this logic in EVCC.

Regarding the other loadpoints, this is good news. The SMA Sunny home manager works differently. It would try to turn on the heat pump every minute and never step. It does not activate other load points in parallel. This is really a great advantage in EVCC.