As per the ADE7880 datasheet pg. 43, in three phase three wire delta configuration, Phase B active, reactive and apparent powers are 0.
So, I would like to know if there is a way to find out the Phase B power data in three wire delta configuration.
The phase B is taken as the reference while connecting the meter and hence its value is shown as zero by the IC. As you will need just line-to-line voltages in the application, you can use Vab and Vcb line-to-line voltages.
For a 3 phase 3 wire delta configuration, connect the meter like this: