State Estimation provides the foundation for control center operations such as monitoring, analysis, optimization, and control functions. The conventional method, Weighted-Least Squares (WLS), has been used for over half a century with little change. However, with state estimation now needed in distribution networks or using PMU data where measurement availability is limited, there is a need for alternative state estimation methods.
BSI QGS State Estimation provides reliability through backup or the enhancement of control center state estimation. QGS stands for Quasi-Gradient Systems, which takes a dynamic approach to solving the non-linear state estimation problem, accommodating scenarios where measurement redundancy is limited. This application can operate as stand-alone or when integrated with the Energy Management System (EMS) or Advanced Distribution Management Systems (ADMS).
The QGS State Estimation can enhance conventional state estimators or serve as a backup to state estimators when they diverge.
QGS State Estimation can be used for: