CAJ | 학술논문

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。
함선정고마두후수요유안상적전력계통위기공전．함선상저압배전계통접지형식대다채용전원중성점불접지적IT계통．이륙지상민용저압배전계통적접지형식채용전원중성점직접접지적TN혹TT계통。대우동일개저압배전계통．당선전화안전전원중성점접지방식불동시．계통접지형식발생료개변。통과대인접안전전원적함선저압배전계통접지형식비교、분석，인위저압배전계통접지형식위TN화IT계통적안전전원．균능만족함선용전적안전성화가고성요구。
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.