IEC 61851-23: 2023 CableCheck changes

[corneliusclaussen]

Describe the problem

A new version of IEC61851-23: 2023 was released and will replace the 2014 version. A few things have been changed that touches EVerest in the cable check phase:

CableCheck:

• It is now mandatory to do IMD self testing in CableCheck Phase, doing it periodically in between charging sessions is no longer allowed
• Voltage used during cablecheck is no longer a constant but depends on the max voltage requested by vehicle
• At the end of cable check, voltage needs to drop below 60V

These changes will make user experience significantly worse as cablecheck phase will take quite long on many popular hardware. Anyway, we will need to implement this.

EVerest Domain

Charge Control

Affected EVerest Module

EvseManager, IMDSimulator, isolation monitor interface

Describe your solution

We should extend the isolation monitor interface with e.g. a self test command to be able to trigger self testing at a dedicated point in time. Changes in EvseManager cablecheck logic are required to fulfill the other changes.

Additional context

No response

[corneliusclaussen]

Closing as PR has been merged