摘要：电力推进技术是目前关于船舶项目研究的世界性的热点，电力推进系统已经被一些发达国家广泛应用在了船舶当中，与之相比，我国对于此项技术的研究才刚开始不久。海上作业在现如今的社会当中越来越多，很多贸易以及资源的开采都离不开船舶，所以为了保障船舶安全，避免一些危害的发生，对于船舶电力系统的稳定性的研究是必要的。正因为如此，促进我国对于船舶系统的仿真分析工作的研究具有非常重要且深远的历史意义。

本文在简化了船舶电力系统的根本上，运用电力系统的仿真软件PSCAD对电力系统进行了分割式的模块化建模，包括发电机组和异步电动机系统等的建模，然后根据仿真模型及仿真结果分析船舶电网在大功率的异步电动机的起动冲击下会有什么样的影响。同时分析了当异步电动机在采取包括直接起动、定子串电阻降压起动、自耦降压起动等不同的起动方式下，对船舶电网会产生的影响，并根据仿真结果比较分析哪一种起动方式最适合船舶电力系统的使用。

为了便于对系统的研究，本文所建立的模型都是在保证其准确性的前提下进行了简化的，其结论的有效性是可以得到保证的。

关键词：电力系统；PSCAD；发电机组；异步电动机；降压起动

ABSTRACT：Electric propulsion technology is a hot topic in the world of ship project research. The electric propulsion system has been widely used by some developed countries in the ship. Compared with this, the research on this technology has just started. Maritime operations are now more and more in today's society, many of the trade and the exploitation of resources are inseparable from the ship, so in order to protect the safety of ships, to avoid the occurrence of some hazards, the stability of the ship's power system is necessary. Because of this, it is of great and far-reaching historical significance to promote  the research of the simulation analysis of ship system in China.

In this paper, the power system is simplified and the modular simulation of the power system is carried out by using the simulation software PSCAD of the power system. Including the generator and asynchronous motor system modeling, and then according to the simulation model and simulation results analysis of the ship power grid in the high-power asynchronous motor under the impact of the impact will be what kind of impact. At the same time, the influence of the asynchronous motor on the ship power system is analyzed under different starting modes, including direct starting, stator series resistance step-down starting and autotransformer starting, etc., which is the most suitable for the ship power system according to the simulation results.

In order to facilitate the study of the system, the model established in this paper is to ensure its accuracy under the premise of a simplified, the validity of its conclusions can be guaranteed.

Keywords: Power Systems; PSCAD; Generator set; Induction motor; Step-down start.

目录

第一章 绪 论 1

1.1课题研究的背景及意义 1

1.2国内外发展现状 1

1.3本文所做的工作 2

第二章 现代船舶电力系统的简介及建模准备 4

2.1船舶电力系统的组成部分 4

2.1.1供电系统 6

2.1.2配电系统 7

2.1.3推进系统 7