中文摘要：

针对以电压源换流器（VSC）为基础的新一代高压直流输电（HVDC）,对含VSC-HVDC的交直流混合系统进行静态状态估计。介绍了VSC-HVDC的稳态模型,通过确定交直流混合系统的量测函数、状态变量和雅可比矩阵,建立了含VSC-HVDC的交直流混合系统的状态估计模型;在基本加权最小二乘状态估计算法的基础上,提出了含VSC-HVDC的交直流混合状态估计同时迭代求解法;对经过修改的IEEE 14、IEEE30、IEEE 57节点系统算例进行仿真,从算法的估计误差、迭代次数和计算速度等方面验证了算法的有效性和实用性。

英文摘要：

The static state estimation of power system with VSC-HVDC is carried out for the HVDC（High Voltage Direct Current） transmission based on VSC（Voltage Source Converter）.The steady model of VSC-HVDC is introduced,the measurement equations,state variables and Jacobian matrix of hybrid AC/DC system are determined and the state estimation model of power system with VSC-HVDC is built.A uniform iterative algorithm based on the WLS（Weighted Least Square） is proposed to get the solution.Simulations are carried out for the modified IEEE 14-bus,IEEE 30-bus and IEEE 57-bus systems,which shows the effectiveness and practicality of the algorithm in terms of estimation error,iteration times and calculation speed.