基于分解协调的分布式动态潮流计算方法研究

考虑负荷和发电机调节特性的动态潮流是EMS和DTS系统的基础功能之一.采用分解协调方式的多调度中心间分布式动态潮流计算是全网在线一体化潮流分析的一种新的途径.本文以隐函数形式的边界协调方程对全网动态潮流方程协调求解问题建模.该模型可统一考虑边界节点功率平衡和不平衡功率在分区电网间的合理分配问题.进一步,本文采用Jacobian Free NewtonGMRES方法实现协调求解过程.广域网络通信环境中的测试结果表明所提算法通信接口简单、通信次数较少,能够满足在线应用的需求.

Distributed dynamic power flow calculation based on decomposition and coordination

With the considerations of the dynamic characteristics of loads and generators,the dynamic power flow is one of the most important functions of EMS and DTS.To achieve the on-line power flow analysis of the multi-area interconnected power systems,a new algorithm of the distributed dynamic power flow is proposed in this work.By setting up the implicit boundary equations,the unified power flow of the whole power system is modeled in the decomposition and coordination manner,which can handle the power balance and distribution of imbalance power at the same time.Then,a Jacobian-Free Newton-GMRES method is used to solve the boundary equations,which requires the simple interfaces of the data exchanges during the coordination procedures.Test results in wide area network communication environment show that the proposed algorithm can archive such high-performances both on the computation and communication aspects that it is practical and feasible for the online power flow analysis applications.