含不良数据预处理的辐射网前推回代抗差状态估计方法

本发明公开含不良数据预处理的辐射网前推回代抗差状态估计方法，包括以下步骤：1)获取电网基础数据；2)以底层电网为起点、顶层电网为终点，对电网状态进行估计，得到电网状态初始估计结果；3)以顶层电网为起点、底层电网为终点，对电网状态进行估计，得到电网状态修正结果；4)计算电网状态初始估计结果和电网状态修正结果的差值，若差值小于预设偏差阈值，则进入步骤5)，否则返回步骤3)；5)建立指数加权最小二乘状态估计模型；6)将电网状态修正结果和电网基础数据输入到指数加权最小二乘状态估计模型中，对量测量中的不良数据进行识别。本发明通过对所有"局部"进行状态估计，从而完成"全局"的状态估计。 The invention discloses a radiation network forward-backward substitution robust state estimation method containing bad data preprocessing. The radiation network forward-backward substitution robust state estimation method comprises the following steps of: 1) acquiring basic data of a power grid; 2) estimating a state of the power grid by taking a bottom-layer power grid as a starting point and a top-layer power grid as an ending point to obtain an initial estimation result of the state of the power grid; 3) estimating a state of the power grid by taking the top-layer power grid as a starting point and the bottom-layer power grid as an ending point to obtain a power grid state correction result; 4) calculating a difference