A Sensitivity Analysis Method for Unbalanced Distribution Network based on Linearized Power Flow Model

Unbalanced structure of distribution network brings difficulties into its analysis and computation. With increasing integration of renewable distributed generation (DG) in distribution network, more accurate and efficient sensitivity analysis method is required to facilitate following control and optimization procedures. In this paper, a sensitivity analysis method for unbalanced distribution network is developed. The proposed method utilizes existing measurement data to construct linearized power flow model and sensitivity data is obtained directly via solving linear equations. The numerical tests show that the proposed method achieves higher accuracy than traditional methods.