船舶直流区域配电网的故障恢复研究

Research on fault restoration of shipboard DC zone distribution systems

船舶电力系统故障恢复过程是通过改变电网的供电路径来实现重要负载的连续供电,对提高船舶的生命力和供电可靠性具有重要意义。以负荷供电量最大和开关动作次数最小作为目标函数,建立一种用于船舶直流区域配电系统的多目标故障恢复模型。然后将不同量纲的目标函数进行单位化,再通过层次分析法(The analytic hierarchy process,AHP)把这些已单位化的函数进行综合。最后利用整数规划(Integer Programming,IP)方法,对综合目标函数进行优化求解,得到最优开关动作序列,最大程度的保证系统的供电连续性。一个典型的船舶直流区域配电系统的故障恢复仿真结果验证了所提方法的可行性和有效性,对直流配电网的研究具有一定的借鉴作用。

The reconfiguration process for shipboard power system （SPS） reroutes the electric power to restore the power supply for vital loads, and is important to improve the shipboard＇s survivability and power supply reliability. A multi-objective model for fault restoration of DC zone distribution system is established to maximize numbers of load power supply and minimize times of switch operation. The objective functions of different dimensions are normalized, and these objective functions are integrated by using the analytic hierarchy process （AHP）, then the integer programming （IP） method is used to optimize the integrated objective function, and the optimal switch operation sequence is obtained, and the continuance of electricity supply could be ensured as far as possible. Finally, numerical results based on a typical shipboard power system are used to demonstrate the feasibility and effectiveness of the proposed method, and this method and strategy is a Kood reference for the studv on DC power distribution networks.