Research On Universal Algorithm For Shipboard Power System Network Reconfiguration

Nowadays,the network structure of the shipboard power system becomes more and more complex, and the capacity increases rapidly. The electrical equipments demand continuous and reliable power supply. The malfunctions of the generators, buses, or some important component, may cause some important loads losing electricity power, which would affect the security of the power system and the navigational safety of the whole ship. Therefore, shipboard power system needs rapid network reconfiguration to recover the load losing power. At present, work at home and abroad focused on the reconstruction method and the study of optimization theory. The proposed methods are designed for the simple network structure, so the algorithms are not general applicable. This research mainly proposes a general algorithm, which is suitable for all kinds of network structure, and enhances the automation and intellect of the power system.A simplified power flow calculation based on tabulation method is proposed. This method simplifies the shipboard power system as a DC circuits consisted of voltage sources, current sources and resistances. The branch currents are easily obtainable via tabulation method, which provides precise enough data of the power flow for the network reconfiguration. This method is not only applicable to the radioactive network structure, also suitable for complicated nested structure. Applying the improved tabulation method, a network reconfiguration algorithm is proposed based on particle swarm Optimization algorithm (PSO). Finally, this paper studies to shorten the running time of the reconstruction algorithm, and a closed cycle transient simulation on a typical shipboard power system is proposed to prove the availability of the method.