External Modeling for State Estimation and Network Applications at BC Hydro

To fulfill some of its obligations as a Reliability Co-ordinator, BC Hydro adopted the reduced external model approach to meet real-time requirements for its state estimator and network security assessment tools. This approach requires extensive initial studies to define appropriate boundaries for the external network and ongoing validation to ensure adequate performance in real-time operations. This chapter presents BC Hydro’s model reduction method and model comparison results. A repeatable model merge process as well as ongoing model maintenance and validation are also discussed.