Fast decoupled state estimation for distribution networks considering branch ampere measurements

Yuntao Ju, Wenchuan Wu, Fuchao Ge, Kang Ma, Yi Lin, Lin Ye

Research output: Contribution to journalArticle

5 Citations (Scopus)
145 Downloads (Pure)


Fast decoupled state estimation (FDSE) is proposed for distribution networks, with fast convergence and high efficiency. Conventionally, branch current magnitude measurements cannot be incorporated into FDSE models; however, in this paper, branch ampere measurements are reformulated as active and reactive branch loss measurements and directly formulated in the proposed FDSE model. Using the complex per unit normalization technique and special chosen state variables, the performance of this FDSE can be guaranteed when it is applied to distribution networks. Numerical tests on seven different distribution networks show that this method outperforms Newton type solutions and is a promising method for practical application.
Original languageEnglish
Pages (from-to)6338-6347
Number of pages10
JournalIEEE Transactions on Smart Grids
Issue number6
Early online date1 Jun 2017
Publication statusPublished - 1 Nov 2018


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