The Effect of Phasor Measurement Units on the Accuracy of the Network Estimated Variables

• Published in: 2009 Second International Conference on Developments in eSystems Engineering pp. 66 - 71
• Main Authors: Sangrody, H.A., Ameli, M.T., Meshkatoddini, M.R.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.12.2009
• Subjects: conventional state estimation; Fluid flow measurement; Global Positioning System; hybrid state estimation; linear formulation; Nonlinear equations; phasor measurement unit; Phasor measurement units; Power measurement; Power system measurements; Power system security; State estimation; System testing; Voltage
• ISBN: 1424454018; 9781424454013
• DOI: 10.1109/DeSE.2009.45

The most commonly used weighted least square state estimator in power industry is nonlinear and formulated by using conventional measurements such as line flow and injection measurements. PMUs (Phasor Measurement Units) are gradually adding them to improve the state estimation process. In this paper the way of corporation the PMU data to the conventional measurements and a linear formulation of the state estimation using only PMU measured data are investigated. Six cases are tested while gradually increasing the number of PMUs which are added to the measurement set and the effect of PMUs on the accuracy of variables are illustrated and compared by applying them on IEEE 14, 30 test systems.