基于改进凝聚算法的电磁环网解环方法

提出了一种电磁环网解环方法。首先利用电气距离矩阵对电网进行预分裂,再利用所提出的基于复杂网络加权模块度的改进凝聚算法对预分裂得到的分区进行凝聚,最后得到解环方案。该方法考虑了500 kV变电站分母运行方式,得到的解环方案中各分区内形成了以2～3座500 kV变电站为核心的供电方式,限制了各分区主变容量,从而能够限制分区内短路电流,提高了电网安全性。将所提出的电磁环网解环方法应用于某地区电网,结果表明该方法是有效的。

Electromagnetic ring network decoupling method based on improved aggregation algorithm

An automatic loop unwrapping method for electromagnetic loop network is proposed in this paper. Firstly, the electrical distance matrix is used to pre-splitting the power grid, and then the improved coherent algorithm based on the complex network weighted modularity proposed is used to condense the pre-split partitions and get the solution finally. The denominator operation mode of 500 kV substation is considered. The power supply mode with two to three 500 kV substations as the core is formed in each partition of the obtained solution, which limits the main transformer capacity of each zone, thus limiting the short-circuit current in the zone and improving the security of grid. The proposed electromagnetic ring network unwinding method is applied to a regional power grid, and the results show that the method is effective. This work is supported by National High-tech R & D Program of China (863 Program) (No. 2015 AA050101).