Patent ID: 8024390

Claim:
A method of automatically aligning data measured by a number, n, of monitoring devices in a power monitoring system, comprising: receiving from each of said monitoring devices respective signal data representing at least frequency variations measured by respective ones of said monitoring devices, said monitoring devices including a reference monitoring device and a second monitoring device; correlating said signal data from said reference monitoring device with said signal data from said second monitoring device to determine a reference cycle count, M i , associated with said reference monitoring device corresponding to a maximum correlation coefficient and a second cycle count, M j , associated with said second monitoring device corresponding to said maximum correlation coefficient; automatically calculating a direct cycle count offset, M ij , as a function of a difference between said reference cycle count, M i , and said second cycle count, M j , and storing said direct cycle count offset in a direct cycle count offset matrix; and automatically calculating an indirect cycle count offset as a function of at least M k , where k≠i≠j and 1≦k≦n, said M k being a cycle count associated with a monitoring device of said n monitoring devices other than said reference monitoring device and other than said second monitoring device.