Mixed quadratic programming in the form of an integrated power system state estimation method

The present invention discloses a hybrid form of a quadratic programming integrated power system condition estimating method, comprising the steps of: forming a network model, the node admittance matrix is ​​calculated and branch - the node incidence matrix; of the state vector and the measurement vector is converted, to obtain the intermediate vector and the measurement vector intermediate state; measurement vector based on the intermediate vector and an intermediate state, to form a precise measurement of linear equations; linear measurement equation based on the previously obtained, presented in the form of a mixed quadratic programming state electric power system estimation model, and then use software to solve CPLEX give intermediate state vector estimated value, while in the process identification of bad data, topological errors and error parameters; and was subjected to intermediate state vector obtained by inverse transformation of the voltage amplitude of all nodes and the estimated phase angle values. The method is accurate and reliable, high solving efficiency advantages.