考虑故障关联区域划分的电力系统线路过载自动校正方法

Automatic Correction Method of Power System Line Overload Considering Fault Correlation Area Division

为了提高电力系统线路过载的校正精度,提出考虑故障关联区域划分的电力系统线路过载自动校正方法。通过对电力系统中的直流潮流进行分析,构建支路功率越限的标识矩阵,划分电力系统故障关联区域。通过构建过载线路的配对灵敏度向量,调整过载线路的功率,引入控制节点,将最小的功率调整量作为允许的调整量,计算电力系统的最终调整量。调节发动机的动力,减少参与修正的发电机数目,构建目标函数。通过消除线路过载的约束和发电机功率调整的上下限约束,构建电力系统线路过载自动校正模型,实现电力系统线路过载的自动校正。实验结果表明,本文方法对IEEE39节点系统线路过载的校正精度可以达到90%以上。

In order to improve the correction accuracy of power system line overload,an automatic correction method of power system line overload considering the fault correlation area division is proposed.Through the analysis of DC power flow in power system,the identification matrix of branch power overrun is constructed,and the fault correlation area of power system is divided.By constructing the paired sensitivity vector of the overloaded line,this paper adjusts the power adjustment of the overloaded line,introduce the control node,take the minimum power adjustment as the allowable adjustment,and calculate the final adjustment of the power system.this paper adjusts the power of the engine,reduce the number of generators participating in the correction,and build the objective function.By eliminating the constraint of line overload and the upper and lower limit of generator power adjustment,this paper constructs the automatic correction model of power system line overload,and realize the automatic correction of power system line overload.The experimental results show that the correction accuracy of the proposed method can reach more than 90%for IEEE39 bus system line overload.