Performance Assessment of Current Based Distribution System State Estimator

State estimation methods need to be tailored for real-time monitoring at distribution level to address the computational burden. One of the promising approaches converts the measurements to equivalent current measurements. This paper focuses on a comprehensive assessment of the performance of this method. The metrics adopted aims to assess the main performance issues of bias, consistency, and quality. This paper also examines the dependency of the method's performance on the measurements available for estimation. Test results on a sample test feeder have also been provided to illustrate the importance of the proposed performance assessment approach, as the results show that the performance metrics used provide valuable insights about the limitations of the use of the equivalent current injections when there is only a limited number of measurements available at distribution level.