Interval State Estimation Based on an Approximate Model of Distribution Network

As renewable energy integration becomes more prevalent, the modern distribution network faces safety challenges while operating under numerous uncertain factors. As a result, interval state estimation has emerged as an essential component of the distribution network dispatching system. To address the challenges posed by nonlinear problems in distribution network models, this paper introduces an interval analysis method applied to an approximate model for distribution network state estimation. The ultimate goal is to enhance the accuracy and reliability of the estimation process. The results indicate the effectiveness and flexibility of the interval analysis method when applied to the approximate model for distribution network state estimation. © 2023 IEEE.