基于多源量测的主配网一体化状态估计方法OA北大核心CSTPCD

Aimed at the problem that the structure of a transmission-distribution power system is complex and the mea-surement devices cannot cover all buses,a state estimation algorithm for the integrated transmission-distribution power system is proposed based on the multi-source measurement data.For different measurement conditions,the correspond-ing state estimation models are designed,and a nonlinear dynamical system is constructed to ensure the global conver-gence of the state estimation algorithm.At the same time,considering the coordination of state estimation of transmis-sion and distribution networks,the supervisory control and data acquisition(SCADA)and phasor measurement unit(PMU)measurements with high update frequency and the advanced metering infrastructure(AMI)measurements with low update frequency are integrated to carry out the design of the state estimation scheme for the integrated transmission-distribution power system.The proposed method is tested on a transmission-distribution power system which is modified based on an IEEE standard test example,and simulation results verify its effectiveness.