Three-phase interval state estimation of AC-DC distribution network considering SOP loss
As distributed power supply and Soft Open Points(SOP)and other new equipment are put into distribution network operation,it is necessary to accurately estimate the status of AC and DC distribution network.Firstly,the interval state estimation model of AC-DC distribution network is constructed consider-ing the coupling between AC-DC and three-phase asymmetry.Secondly,in order to account for the loss of SOP,the current at both sides of SOP is added as state variable to improve the Jacobian matrix in interval state estimation.Finally,linear programming method based on iterative operation is used to estimate inter-val state.The simulation results on modified IEEE33 node show that the proposed method can guarantee the accuracy of state estimation with SOP loss.
AC-DC hybrid distribution networkinterval state estimationthree-phases unbalancesoft open point(SOP)power transmission loss
万方数据
维普
