Non-Divergent State Estimator
-- work as an offline tool when the customers' state estimator fails to provide a solution
Weighted Least Square (WLS) state estimation works well under normal system load levels and error-free measurements. However, measurements containing gross errors usually lead to a bias WLS solution or even unavailability of state estimation solution. NDSE is designed to work as a supplemental procedure to obtain a feasible solution when WLS state estimator becomes unavailable.
1） NDSE is capable of obtaining a feasible voltage solution
under any circumtances.
2） Human involvement (like adding weights for specific
measurements to obtain a solution, etc.) is not utilized.
3） The solution 100% depends on the given measurements,
system topology and parameters.