多方面改进的自动搜索断面研究

断面是电网的脆弱环节,而断面的识别通常依靠专家经验,针对此局限,提出了多方面改进的自动搜索断面法。首先基于电网分区原则对Louvain算法进行改进,进而采用改进后的算法对电网进行分区,将各区域之间的联络线作为初始断面,再根据支路开断分布系数、安全裕度等约束递进识别输电断面、关键断面。为高效计算断面热稳定极限,建立断面热稳定极限的数学模型,通过改进鸡群优化算法对该模型进行求解,得到断面传输极限,从而得到关键断面。在IEEE39节点系统验证了所提方法的有效性。

Research on automatic search cross section with various improvements

The cross section is the weak link of the power grid, and the recognition of the cross section usually relies on the expert"s experience. Based on the principle of power division to improve the Louvain algorithm, and then use the improved algorithm to partition the grid, the contact line between regions as the initial section, according to the OTDF distribution coefficient, safety margin constraints such as progressive identification key transmission section, section. In order to calculate the thermal stability limit of the cross section, the mathematical model of the thermal stability limit of the section is established, and the model is solved by the improved algorithm. The effectiveness of the proposed method is verified in a IEEE39 node system.