Authors: Qing-quan Jia; Ning Wang; Chun-xia Dou; Zhi-qian Bo
Addresses: Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China. ' Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China. ' Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China. ' AREVA T&D Automation Co. Ltd., Stafford ST17 4LX, UK
Abstract: GPS based Phasor Measurement Units (PMUs) are prevailing in power systems. This paper introduces a dynamic state estimation method for power systems. As installation of PMUs at all buses is impractical, this method employs SCADA data that covers the whole system and PMU data that covers part of the system. The PMU samples are interpolated into the SCADA data to increase the measuring density. An iterative state estimation algorithm is established with the coordination of PMU and SCADA measurements. Example shows that the method can increase the estimating precision and provide more information on power system dynamics.
Keywords: power systems; dynamic state estimation; PMU; phasor measurement units; SCADA systems; pseudo-measurement; power system dynamics.
International Journal of Computer Applications in Technology, 2011 Vol.42 No.2/3, pp.233 - 238
Published online: 11 Feb 2012 *Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article