基于局部序参数的电网同步性能优化

采用类Kuramoto模型对电网中的节点进行建模，利用局部序参数描述节点的局部同步能力.研究发现相比小功率节点，大功率节点到其直接邻居节点更难达到同步.提出一种网络耦合强度的非均匀分配方法，在网络总耦合强度不变的情况下，增大大功率节点到其直接邻居节点的耦合强度以及相关节点对之间的连边耦合强度，减少其余节点对间的耦合强度.研究表明，这种方法可以在一定范围内降低电网的同步临界耦合强度，改善网络的同步性能；但当这种耦合强度的非均匀性过大时，网络的同步性能开始恶化.

Optimization of Synchronization Performance in Power Grids with Local Order Parameters

We use Kuramoto-like model as node model of power grids, and use local order parameters to describe local synchroniz ability. It shows that nodes with high power are difficult to locally synchronize to their direct neighbors. We propose a heterogeneous distribution method for network coupling strength. Keeping the total coupling strength, we increase coupling strength of links between high power nodes and their direct neighbor nodes, as well as links between other related nodes, and reduce coupling strength of links between the rest nodes. It shows that the method reduces critical synchronous coupling strength and improve synchronization performance in a certain range. As heterogeneity of the coupling strength is too great, synchronization performance of the network begins to deteriorate.