BBO Algorithm for Line Flow Based WLS State Estimation

Abstract

State estimation techniques are extensively used by all the utilities to make the best possible estimate of the present system state from the available set of redundant measurements. Conventional estimates most commonly emerge as generating bus voltage magnitudes and angles which should be converted later into line loadings to entire security analysis. BBO algorithm has been applied for line flow based state estimation technique which offers the output in terms of real and reactive power flows and bus voltage magnitudes. The proposed method when applied on standard test systems in the presence of various percentages of bad measurements has been found to give better outcome over those conventional WLS technique in terms of normalized error values and net computation time.