Ground capacitance measurment for Isolation monitoring device

[kavirunimsith]

I am designing an Insulation Monitoring Device for an electric vehicle. The battery voltage of the EV can go up to 1000V. I want to measure the ground capacitance of the electric vehicle to mitigate its effect in isolation monitoring. What method should I use to do this on the IMD PCB? Will AC current injection cause complexities? Can anyone suggest a method or a white paper/reference that I can use?

[uhi22]

There is an interesting description of isolation monitoring from TI.
https://www.ti.com/document-viewer/lit/html/SSZTCY5
From my point of view, calculating the capacitance is just a matter of software. When you close one of the switches, you will see an inrush-curve. At the end of the curve you can calculate the resistance, and the slope of the curve allows to calculate the capacitance.