A highly efficient algorithm in treating current measurements for the branch-current-based distribution state estimation

A highly-linear branch-current-based state estimation model for distributio n system is proposed in this paper. This algorithm is based on the concepts presented in Baran and Kelley (1995), Baran and Kelley (1995) proposed a n ovel branch-current-based approach to solve distribution state estimation. However, the treatment of current magnitude measurements and the complicate d gain matrix in Baran and Kelley (1995) greatly degrade its value in real- world applications, The approach presented in this paper substantially revi sed the original method. A new algorithm with constant gain matrix and a de coupled form was developed, Tests have shown that the proposed method is ro bust, efficient and needs minimal storage requirement. The new algorithm pr ovides a very good theoretical foundation for developing more applications and researches in this area.