Implementation of a modified state estimator for topology error identification

This paper describes the implementation of a modified state estimation program and its associated user interface. The state estimator is improved by adding the capability of detecting and identifying topology errors, which are caused by the incorrect status information for the circuit breakers at the substations. The developed program is tested using a library of topology error scenarios. A user friendly interface is also implemented in order to facilitate testing of these cases. Some representative cases that are simulated, are presented along with the detailed models for the system and substations.