面向过程的交流潮流模型新息图法状态估计

Process-oriented innovation graph state estimation in the AC load flow model

提出了一种处理相量测量单元(PMU)量测值的新方法。基于交流潮流模型下的新息图法状态估计,提出了一种过程的划分方法和面向过程的状态估计分析方法,它能提供一个时间过程内的特征运行状态。首先,根据是否有拓扑结构的变化将一个运行过程进行细分,完成过程的划分之后,可以得到表征过程内系统一般运行情况的期望运行状态、最大负荷和最小负荷时的极端运行状态。期望运行状态通过期望新息网络图来获得。IEEE-5节点系统用来说明本文所提方法的有效性。

The paper provides a method dealing with the measurements of the new advent device of PMU. Based on the innovation network graph in the AC load flow model approach, the division of a process and the process-originated state estimation is proposed, which can provide characteristic states within a process of time. In order to develop the new method, the operating process is divided into several sub-processes according to the topology change. In each process or sub-process, several characteristic state can be derived which can represent the average status of this process, the extreme status in the largest load flow and lightest load flow condition. In order to compute the expected state, an expected innovation network graph is derived. The IEEE-5 bus system is used to illustrate the effectiveness of the new method.