A voltage regulation optimization system receives {HEAD ~ inputs} from a DCS or {TAIL ~ other distribution network control/monitoring system} 
from
A voltage regulation optimization system receives { HEAD ~ inputs } from a DCS or { TAIL ~ other distribution network control / monitoring system }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL