Research On High Reliability Area Power Distribution Technology Of Ship Power System

With the continuous improvement of science and technology,ships are developing towards intellectualization and large-scale,as well as the renewal and replacement of a large number of equipment,more and more electrical equipment are used on modern ships,and the requirement for power quality is becoming higher and higher,so the pressure on ship power stations is also increasing.As an important guarantee of ship safety,the reliability of ship power system is particularly important.The reliability of marine power system largely depends on whether the power grid structure is reasonable or not.Therefore,the structural design of marine power system is a problem worthy of study.In addition,a high reliability marine power system not only needs to consider the power grid structure in the design,but also how to locate the fault and restore the power supply quickly and effectively when the fault occurs.Therefore,the fault recovery of ship power system is also an important research direction.Firstly,referring to the reliability evaluation index of land power system,this paper analyses the reliability of several traditional ship power grid structures.Aiming at the defects of the existing ship power grid structure,this paper improves the ship power grid structure by using the idea of circular distribution and regional distribution,so that it can operate in an economic and safe mode.Secondly,several commonly used methods of power flow calculation in ship power system are introduced and compared,and the forward-backward method which is more suitable for power flow calculation in this paper is selected to improve.The local weak loop problem and multi-power problem existing in the traditional forward-backward method are improved,so that it can be better applied to ship regional distribution network.Finally,the network reconfiguration of ship power system is studied.Taking ship regional distribution system as the research object,the network reconfiguration model and conditional constraints are established.On the basis of traditional wolf algorithm,dynamic convergence factor and dynamic location updating strategy are introduced,and the performance of the improved algorithm is tested.At the same time,the improved algorithm is applied to the problem of network reconfiguration of ship regional distribution system,and compared with other algorithms to verify that the Improved Grey Wolf algorithm has outstanding performance in convergence speed and accuracy when dealing with this problem.