干船坞低压配电接地系统设计探讨

丁建兴 冯   伟（海军研究院，北京市 100070）

朱永彬（91144部队，山东省青岛市 266012）

Research on Design of Low‑voltage Distribution Earthing System of Dry Dock

DING Jianxing FENG Wei(Naval Research Institute,Beijing 100070，China)

ZHU Yongbin(The No.91144 Troop of PLA,Qingdao 266012，Shandong Province，China)

Abstract：In combination with the electrical use scenario and characteristics of dry dock,and from the perspective of electrical safety and continuity,this paper conducts the research on various low‑voltage distribution earthing systems,and concludes as follows through the comprehensive analysis:it is appropriate for electrical distribution of dry dock to adopt the ITN system.

Key words：IT system; distribution of neutral conductor;ITN system;earth fault;over‑voltage;equipotential bonding;residual current operated protection;four‑pole switch

摘　要：结合干船坞电气使用场景和特点，从电气安全、连续的角度，对各种低压配电接地系统展开讨论，综合分析得出结论：干船坞配电采用ITN系统是合适的。

关键词：IT系统；配出中性导体；ITN系统；接地故障；过电压；等电位联结；剩余电流动作保护；四极开关

中图分类号：TU852  　　  　      文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2022.04.007