Patent ID: 6212478
Filing Date: 2001-04-03
Classification: G01R

Abstract:
A method to determine voltage levels in a commercial electrical network, the method comprising the steps of:(i) collecting a series of measured electrical values at first locations in the network;(ii) store in a computer memory the series of measured electrical values at first locations in the network to provide a multi-row electrical measurement array z;(iii) storing in the computer memory a series of coefficients relating the measured electrical values to a plurality of unmeasured voltage values x of the electrical network, at second locations in the electrical network, such that Ax=z, the coefficients forming a coefficient matrix A having multiple rows and columns;(iv) scanning with a computer the rows of the coefficient matrix A for selected rows having greater than a predetermined minimum number of non-zero coefficients;(v) instructing the computer to break the selected rows into new rows to create an expanded matrix A equivalent to A;(vi) solving with the computer the expanded matrix A for the values of x;(vii) outputting the voltage values of x determined from the expanded matrix; and(viii) adjusting the network according to the determined voltage values.