This paper is based on the concept of Region Of Stability Existence (ROSE). It is a hybrid
approach wherein PQ boundary forms the region of stability and the real time operating point
is plotted inside this stability region and updated at the rate of PMU whereas the stability
region is updated with SCADA data rate. (vrenergy.com)
In this paper authors propose model for PMU integration involving substations, concentrators
and control center are addressed for interacting with Hybrid state estimator. In the
developed model, online voltage stability applications are proposed. In order demonstrate
the concept and advantages of hybrid strategy digital simulations are performed. (https://ieeexplore.ieee.org/document/5762975)
This paper presents a comparison of corridor voltage stability approaches and Introduces a
Hybrid approach to consider the impact of Q-limits in Thevenin based corridor voltage
stability approach. (ResearchGate)
The method is based on iteration free estimation of Thevenin parameters and computation of
VSAI based on the estimated parameters. The main contribution of the proposed metod is that
it doesn’t make assumptions normally made in VIP based approaches. The proposed approach
also considers the impact of voltage dependent load models in evaluation of VSAI. (http://ieeexplore.ieee.org/document/6682584/)
