刘晓义,宋佳音,蒋辉雄.基于PMU/SCADA混合量测的电力系统状态估计[J].电测与仪表,2012,49(7):11-15. LIU Xiao-yi , SONG Jia-yin , JIANG Hui-xiong.A State Estimation Method Based on PMU and SCADA Hybrid Measurement in Power System[J].Electrical Measurement & Instrumentation,2012,49(7):11-15.
基于PMU/SCADA混合量测的电力系统状态估计
A State Estimation Method Based on PMU and SCADA Hybrid Measurement in Power System
In order to improve the accuracy of state estimation in power system,this paper proposes a PMU/SCADA hybrid measurement on the bases of the existing theory.The model divides power system into linear areas and nonlinear areas,and computes voltage vectors of nodes associated with the node with the installation of PMU device in the area of linear areas,and the calculated results is introduced into nonlinear areas as indirect measurement data in the state estimation,thus increase the accuracy of state estimation.Emulation experiment shows this algorithm put forward in this article have a fast computer speed,and can improve systematic redundancy degree in IEEE-14 system.The algorithm has certain practical value.
