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    A novel multi-area distribution state estimation approach for active networks

    , Article Energies ; Volume 14, Issue 6 , 2021 ; 19961073 (ISSN) Gholami, M ; Abbaspour Tehrani Fard, A ; Lehtonen, M ; Moeini-Aghtaie, M ; Fotuhi Firuzabad, M ; Sharif University of Technology
    MDPI AG  2021
    This paper presents a hierarchically distributed algorithm for the execution of distribution state estimation function in active networks equipped with some phasor measurement units. The proposed algorithm employs voltage-based state estimation in rectangular form and is well-designed for large-scale active distribution networks. For this purpose, as the first step, the distribution network is supposed to be divided into some overlapped zones and local state estimations are executed in parallel for extracting operating states of these zones. Then, using coordinators in the feeders and the substation, the estimated local voltage profiles of all zones are coordinated with the local state... 

    Optimal allocation of PMUs in active distribution network considering reliability of state estimation results

    , Article IET Generation, Transmission and Distribution ; Volume 14, Issue 18 , 2020 , Pages 3641-3651 Gholami, M ; Abbaspour, A ; Fattaheian Dehkordi, S ; Lehtonen, M ; Moeini Aghtaie, M ; Fotuhi, M ; Sharif University of Technology
    Institution of Engineering and Technology  2020
    Due to the lack of data in active distribution networks, employing new accurate measurement devices like phasor measurement units (PMUs) and micro-PMUs with a high reporting rate becomes an inevitable choice for the future vision of distribution systems. As a result, different algorithms have been presented to optimally place PMUs cost-effectively based on the estimation errors of the distribution state estimation (DSE) results. However, any component failure in measurement devices or communication links between sending ends and monitoring system of the distribution management system can significantly affect the DSE results. In response, this study introduces the reliability of satisfying...