How I can design current monitor for power transmission line using Arduino or Raspberry pi which can

Hi awesome engineers i like to understand and learn how i can design current monitor for power ransmission line using arduino or raspberry pi and this current monitor device can transfer real time data to server via GSM network and by which method i can power up that device 


Following are mandatory data points which need to be transferred:-
- temperature 
- Current (AMP)
-Voltage
-electromagnatic field 


please guys its imp for my project