Study & Develop On Three-Phase Power Flow And State Estimation For Distribution

During the forming of the net topology information matrix based on the definition of the relationship model of primal data,the method of serial number for distribution net topology data is offered in this paper. The Three-phase distribution flow method on combining the back/forward sweep Algorithm and circuit calculation is studied. As a result,the transform model from the apparent power of low voltage side to the current of high voltage side is built. Based on the branch-current-based current method,this paper presented a three-phase state estimation method for Distribution where the load current is considered as the state variable. Finally,combined with the distribution topology analysis,the software of the three-phase power flow and state estimation are developed and applied in a practical distribution system.