Real time power system model validation using archived data

This paper presents the experiences in enhancement of Energy Management System (EMS) real time model, development and implementation of an application and methodologies to validate the EMS model at Vermont Electric Power Company (VELCO), a `transmission only' company in Vermont and a Local Control Center (LCC) for Independent System Operator in New England (ISO-NE). Methodology is developed for comprehensive model enhancement with integrated and iterative validation processes based on data from Common Information Model (CIM) of ISO-NE, neighboring areas, engineering and planning model data. An application is developed based on a scheme to validate the model and its results using archived data and historical events. Test cases are developed to validate the model and model results, indicating the improvement achieved with the model validation practice and in determining model accuracy. In addition resourcefulness of validation as an aid for system tuning and studies is also presented.