###### Abstract
In order to adapt to the latest distributed control structure, [PERSON] proposes a strategy with two levels of reconfiguration--regional reconfiguration and global reconfiguration--to achieve safe and reliable operation of the regional shipboard power system (SPS) [4]. In order to complete reconfiguration quickly, [PERSON] presents an optimization strategy based on an adjustable space operator (ASO) and the discrete state transition algorithm (DSTA), known as the ASODSTA, which improves the quality of the global optimal solution and shortens the running time of the algorithm [5]. Failure reconfiguration of the shipboard power system refers to the method of re-planning and constructing a new power supply network to maintain the power supply of important loads by quickly locating the current fault area and regulating, scheduling, and controlling the switching state of the power system after the failure of the shipboard integrated power systems (IPSs) [6]. By re-planning and adjusting the power system, the ship's power system can still operate normally under fault conditions. The causes of ship power system failure can be divided into internal faults and external faults. Internal faults are generally smaller in scope, less destructive to the ship, and can be handled by the ship's control system; external faults such as collision, battle damage [7], etc., will cause hull breakage and easily produce a wide range of electrical faults. The faults of the electrical system can be categorized into the following: equipment failures, e.g., generator failures [8]; cable failures, e.g., short-circuit and disconnection failures [9]; and measurement failures, e.g., sensor failures or local faults; measurement failures, e.g., sensor failures [10] or local network transmission failures. Through power system reconfiguration, the reliability, stability, and security of the ship's power system can be improved to reduce the impact of failures on the ship and ensure the safe operation of the ship [11]. At the same time, power system reconfiguration can also optimize the energy efficiency of the power system, reduce the operating cost of the power system, and improve the overall performance of the ship [12]. In this paper, a typical ring-type power distribution network of a large destroyer ship, as shown in Figure 1, is the subject of study. The Main Switchboard (MSB) serves as the primary distribution board, to which four generators are connected via link cables [13]. Under normal usage, the system operates in an open-loop configuration, allowing for a partitioned power supply while also providing redundancy between adjacent generators. The power grid consists of eight regional distribution panels (LCP1-LCP8, Load Center Panels), representing 20 loads. For critical and essential loads, alternate power supply paths are set up through ABTs (Automatic Transfer Switches) and MBTs (Manual Transfer Switches), which enable switching between normal and standby power supply paths. When a fault occurs in the grid and is isolated, the operation of the automatic and manual switchesallows for the maximum power supply to fault-free areas within constraint limits [14]. In the diagram, solid lines indicate the normal power supply path for loads, where the solid line indicates the normal power supply path of the load and the dotted line indicates the standby.