摘要
舰船停靠码头后需要由岸上的电力系统为其供电。舰船上低压配电系统接地型式大多采用电源中性点不接地的IT系统,而陆地上民用低压配电系统的接地型式采用电源中性点直接接地的TN或TT系统。对于同一个低压配电系统,当船电和岸电电源中性点接地方式不同时,系统接地型式发生了改变。通过对引接岸电电源的舰船低压配电系统接地型式比较、分析,认为低压配电系统接地型式为TN和IT系统的岸电电源,均能满足舰船用电的安全性和可靠性要求。
After ships dock at the shore, ashore power systems are needed for power supply of these ships. The grounding of low-voltage power distribution systems on ships mostly adopts ungrounded power neutral-point IT systems, while the grounding of lowvoltage distribution systems on the land adopts TN or TT systems with power neutral points directly grounded. As f or the same low-voltage distribution system, when the grounding methods for neutral points of power distribution systems on ships and on the land are different, that means the system grounding type has changed. Through comparison and analysis of the grounding types of low- voltage distribution systems on ships that are connected to ashore power sources, the authors believe that ashore power distribution systems which adopt the grounding methods by using TN and IT systems can meet the safety and reliability requirements for ships.
出处
《建筑电气》
2011年第10期30-36,共7页
Building Electricity
关键词
舰船低压配电系统
岸电低压配电系统接地型式
绝缘监测
Low-voltage distribution system of shipAshore
low-voltage power
distribution systemGrounding type
Insulation monitoring
