Patent ID: 7630863

Claim:
A system for power system automation, control or protection based on the state of the power system at a specific instant in time using power system data having a time component associated therewith, comprising: a remote IED associated with a remote location on a power line, the remote IED adapted to acquire remote power system signals at a specific instant in time, and which calculates remote power system data from the acquired remote power system signals, associates the remote power system data with a time stamp corresponding to the specific instant in time to produce time-stamped remote power system data, and transmits the time-stamped remote power system data; wherein a time delay is associated with any one of the acquisition of the power system signals, the calculation of remote power system data or the transmission of the time-stamped power system data; and a local IED associated with a location on a power line, the local IED adapted to acquire local power system signals at the specific instant in time, and which calculates local power system data from the acquired local power system signals, receives the time-stamped remote power system data, associates the local power system data with a time stamp corresponding to the specific instant in time to produce time-stamped local power system data, time-aligns the local power system data with the remote power system data by matching the time stamps of the local power system data with the time stamps of the remote power system data for the specific instant in time, and performs a real-time automation, control or protection operations based on the state of the power system at the specific instant in time using the time-aligned local power system data and remote power system data.