This paper focuses on the design and steady-state analysis of medium voltage DC propulsive power system (MVDC System) on ships.There are two steps in the design of the power system.Firstly,the power supply is designed based on the combination of the demand coefficient method and determining principle of the generator capacity and quantity.Secondly,a basic design principle for the system is proposed based on the standard of IEEE 1709 and other related design standards.A mathematical model for calculation of power flow is established.Based on the DC Newton-Raphson method,calculation of AC/DC hybrid power flow is performed,and a steady-state analysis of the system is implemented.The results show that the proposed design method and calculation of AC/DC hybrid power flow are applicable to MVDC System on ships.%论文针对目前备受关注的舰船中压直流综合电力推进系统(简称舰船MVDC系统)进行设计及稳态分析研究.舰船MVDC系统设计分为两步:其一,结合需要系数法及发电机容量、台数确定原则,进行系统电源设计;其二,通过研究IEEE 1709标准以及船舶电力系统相关设计标准,提出舰船MVDC系统基本设计原则,并结合系统电源设计结果,完成系统结构设计.在系统设计的基础上,建立系统潮流计算数学模型;并基于直流牛顿拉夫逊法进行改进,提出舰船MVDC系统的交直流混合潮流计算方法,进行系统稳态分析研究.研究结果表明,论文所提出的系统设计方法及交直流混合潮流计算方法,适用于舰船MVDC系统.
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