Single Iteration Conditional Based DSE Considering Spatial and Temporal Correlation

by   Mehdi Shafiei, et al.

Active players are introducing significant challenges in electric distribution systems management. One of the key components of the distribution system management is state estimator. This paper proposes an efficient and accurate single iteration distribution system state estimation technique only requiring a limited number of real measurement units. A method based on conditional multivariate complex Gaussian distribution (CMCGD) is proposed to include spatial and temporal correlation into estimator and to improve the accuracy of pseudo measurements for unmeasured buses. The quality, accuracy, standard deviation and computational time are improved due to combined spatial and temporal correlation and using an efficient direct solution that only has a single iteration for the solution. Three case studies are used in this paper to examine and demonstrate the effectiveness of the proposed technique.



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