Research Of The Topology Analysis And Power Flow Calculation For Shipboard Power System

It requires analysis of ship power system network and other analysis to determine the feasibility of reconfiguration proposal after reconfiguration of shipboard power system. These need to be established in topology, based on power flow calculation. Ship power system is different from land-based power systems, such as special grid structure, the larger load, the larger fluctuations in load and power-sharing between the generators in accordance with the capacity. According to the characters of shipboard power system, it is necessary to carry out topology analysis and select a suitable method of power flow calculation. Around this problem, this paper has done some study of the following:First of all, the topology model and topology analysis of the electrical components in the ship are researched. The topology model not only need to describe the ship and the relationship between electrical components, but also need to satisfy these applications, such as the power flow calculation, network reconfiguration. In response to these requests, the paper adopts the method of undirected graph to model the ship power system. The model is simple, intuitive and can be set the electrical parameters of all types of components. Because the network is radial, this paper adopts the tree_search method for topology analysis, node number and the design of the relevant program. Some examples show that the methods and program are right.Secondly, considering the characters of ship power system, such as radial structure, larger load, large fluctuations in load and power-sharing between the generators in accordance with the capacity, this paper learns from the methods of distribution power flow calculation and gives a method of power flow: Dynamic Power Flow based on Back/Forward Sweep that all generators and loads share the imbalance of power which is more realistic. Load model which not only takes into account the voltage characteristics, but also considers the frequency characteristics is more accurate. In addition, the paper completes the design and preparation of related programs.Finally, the interface between the program of power flow and topology analysis is researched. To achieve the transmission of data between the power flow and topology analysis, the paper uses the method of breadth-first search to re-enable the slip number and stratification. The paper accomplishes the preparation of the interface program and verifies the correctness.