Abstract
As the expansion of power systems continue, the challenge of real monitoring and control gets bigger. Important network parameters are measured at various points on the system and transferred to the control center, where the data is used for various energy management system (EMS) functions. State estimation forms one of the primary EMS functions at the control center. Accuracy of the state estimation is directly dependent on the accuracy of the measurements used. Hence, it is highly essential to use accurate measuring devices. Phasor measurement units (PMU), with their inherent high accuracy and the unique ability to measure the voltage angles, offers a great advantage in improving the overall accuracy of the state estimation. Few techniques have been proposed in the literature for using PMUs in static state estimation. It is also important to use PMU data in to dynamic state estimation (DSE), which predict the state of the system one step ahead. Hence, an attempt has been made in this paper to present a technique, which can incorporate the PMU measurements in to dynamic state estimation.
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