Electronic International Standard Serial Number (EISSN)
State estimation measurements within a substation are routinely considered Gaussian and independent. In this paper, the questionable independence assumption is dropped and a statistical procedure is proposed to estimate the measurement variance-covariance matrix. The well-known weighted least squares technique for estimation is then modified to take into account measurement dependencies. Two case studies are analyzed and conclusions duly drawn. (copyright) 2009 IEEE.
dependent gaussian measurements; power system state estimation; weighted least square