Hi gaubuali
This is what I propose, if you plan to use ADE7913. In fact, you can consider ADE7912 instead if you don't need the third ADC. It is still high-side sensing like you requested. The main idea is that you make a separate ground for the input (sensing) side of the ADE7913 and keep that ground at 30V (your power supply positive potential). As this is an isolated ADC, the other ground of the ADE7913 IC can be tied to your system ground.
I have chosen example resistor values to keep the signals entering the IC within acceptable levels. I haven't shown filtering and other pin connections here to keep it simple.
Let me know if you have any questions!
Regards
hmani