Research on Robust State Estimation Method for Integrated Transmission and Distribution Power Grid
To effectively solve the problems of poor measurement and bad data in the practical application of transmission and distribution power grid systems,four different state estimators,WLS,WLAV,MES,and MEAV,were compared and analyzed.An estimation method for deploying MEAV-MEAV state estimators simultaneously in TN and DN was proposed.When there are gross errors and bad data near or far from the boundary points,this algorithm is significantly superior to other algorithms,and the estimated values are completely the same as the true values with small absolute errors.It can achieve high efficiency and accuracy,and has good estimation performance.
integrated transmission and distribution power gridstate estimatorestimation performance