  Utilizing highly synchronized measurements from synchrophasors, dynamic state
estimation (DSE) can be applied for real-time monitoring of smart grids.
Concurrent DSE studies for power systems are intolerant to unknown inputs and
potential attack vectors --- a research gap we will fill in this work.
Particularly, we (a) present an overview of concurrent estimation techniques,
highlighting key deficiencies, (b) develop DSE methods based on cubature Kalman
filter and dynamic observers, (c) rigorously examine the strengths and
weaknesses of the proposed methods under attack-vectors and unknown inputs, and
(d) provide comprehensive recommendations for DSE. Numerical results and
in-depth remarks are also presented.

Systems and Control;Optimization and Control