大型船舶电力系统分布式并行潮流计算方法

摘要

提出一种大型船舶电力系统分布式并行潮流算法,将电网划分为供电网络和辐射状配电网络两个潮流计算层次,定义了层次之间的接口方程及基于牛顿-拉夫逊法和前推回推法的两层网络交替迭代求解模型.为提高潮流求解的效率,将电网划分多个供电区域,并将全网的潮流计算任务分配给相应的计算单元,采用分布式并行计算方式求解全网潮流.对典型船舶电力系统的测试结果表明,该算法较传统潮流计算方法具有更好的收敛性和计算速度,适用于求解大型船舶电力系统潮流问题.%A distributed parallel load flow calculation method adapted for large ship power system is proposed. In this approach, the whole power network is divided into two calculation layers, namely main power-supply network and radial distribution subnets, and the interface equations between the two calculation layers and the alternatively iteration calculation model based on Newton-Laphson method and forward-backward method are defined. To improve the calculation efficiency, the network is divided into several power supply zones, and the load flow calculation task is distributed to corresponding calculating elements, so that the load flow of the whole network is solved in a distributed parallel way. The test results of several typical ship power systems demonstrate that the proposed load flow method has better performance of convergence and faster computing speed than the traditional method, and is suitable for calculating flow problem of large ship power system.