Faculty Publications

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    Latest Trends in Electromechanical Dynamic State Estimation for Electric Power Grid
    (Institute of Electrical and Electronics Engineers Inc., 2022) Johnson, T.; Moger, T.
    Dynamic state estimation is the starting point for the further control and and protection strategies implementation for a secure electric grid. This basically provides the real-time operating status using the electromechanical state variables. This is essential especially after small or large disturbance events in the system. A critical review is presented in this paper to open up the research opportunities and scope for new researchers in this field. © 2022 IEEE.
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    Review of Advancements in Forecasting-aided State Estimation based on Kalman Filter Approach for Voltage Profile of Power Systems
    (Institute of Electrical and Electronics Engineers Inc., 2022) Johnson, T.; Moger, T.
    Forecasting-aided state estimation (FASE) is per-formed for power system to help in monitoring and control of the system. The estimation is carried out employing the data from remote terminal units along with that from phasor measurement units. So far for FASE, it is assumed that the variations in the system variables, for instance load demand variations at a bus are slow. Quick variations in the states of an electric grid are hence not included for the study. To predict the states at a time instant in between receiving the two measurement datasets from the measurement system, a state forecasting approach is being used. The filtering step is carried out with the help of a Kalman filter approach. This aids in the estimation of power system states during periods when field data are unavailable. © 2022 IEEE.
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    Latest Trends in Event Detection Techniques in Power Systems
    (Institute of Electrical and Electronics Engineers Inc., 2022) Johnson, T.; Moger, T.
    Numerous issues come up in an electrical power networks. The magnitudes of these disturbances may however be a deciding factor for them to be critical or not. Disturbance is the variation of any of the electrical quantities monitored from its normal operating range. Some disturbances that may cause electric grid interruption or degradation have been categorized as Events, under the focus of this study. These occurrences must be dealt with as soon as reasonably practicable, as they could bring huge losses to power generation organizations. The literature survey carried out in this paper highlights the challenges and deficiencies of the existing methods. Thus, giving directions for future scope of improvements needed in this research topic to help new researchers. © 2022 IEEE.