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- This paper presents a power system state vector reconstruction approach based on weighted
least squares. The main objective of reconstruction is to approximates the unobservable
states of power system. The reconstructed state vector is used to show it performs
acceptable with Wide area voltage stability monitoring algorithm developed by same authors.
(https://sci-hub.tw/https://ieeexplore.ieee.org/document/6345154)
- This approach is based on voltage stability assessment by computation of Thevenin based
impedance. The method relies on information of PMU measurements at load buses and system
topology and load powers from SCADA/EMS. Authors demonstrate that for implementation of
their proposed algorithm only PMU installations at concerned buses is needed. Authors also
demonstrate that for system instability monitoring it is sufficient to take into account
part of system vulnerable to voltage instability. (https://ieeexplore.ieee.org/document/7038432)
