船舶电网中性点接地方式研究

Analyses of Neutral Point Grounding Modes of Ship Power Grid

在船舶和海洋平台上,随着电网规模大型化的快速发展,为了保证电网供电的连续性,在电力系统设计之初便需要综合多方面因素对系统中性点接地方式做出选择,通过合理、有效地控制单相接地故障电流来达到预防和控制故障以及事故的目的。本文比较了各中性点接地方式的特性,并以某挖泥船为例,进行单相接地故障仿真分析,对如何选取中性点接地方式提供参考。

With the rapid development of large-scale power grid,in order to ensure the continuous power supply,it is necessary to integrate various factors to select the neutral grounding mode of the system at the primary design phase of the power system.Through reasonable and effective control of single-phase grounding fault current to achieve the purpose of preventing and controlling faults and accidents.In this paper,the characteristics of several neutral point grounding modes are compared,and the simulation of single phase grounding faults is carried out taking a dredger as an example to provide a reference for selecting of the neutral point grounding mode.