摘要
船舶电网集成度高、线路密集、供配电网络结构复杂,使得船舶电力系统中故障类型更为复杂多样,大型特种船舶因其使用的特殊性,对于电气设备工作的稳定性提出了较高要求。文章针对一起大型特种船舶微型断路器多次脱扣故障现象,通过依次使用船舶便携设备常规检测、实验室电气物理性能试验和失效试验3种逐步深入检测方式,发现脱扣断路器因质量存在个体差异,导致其触头表面导电金属银含量较低,使得触头电阻热功率较高,在长时间的工作下产热致过载热脱扣结构误动作,导致此次断路器非典型脱扣故障的发生。同时还提出了同批次断路器使用前进行失效试验抽检的建议,为后续船舶建造时断路器等电气设备的选择提供了参考依据。
The high integration,dense wiring,and complex structure of ship power grids make fault types in ship power systems more diverse and complicated.Large specialized vessels,due to their unique operational requirements,place higher demands on the stability of electrical equipment.This paper addressed a case of repeated tripping of miniature circuit breakers on a large specialized vessel.Through a step-by-step approach involving routine testing with portable shipboard equipment,laboratory electrical performance tests,and failure tests,it was discovered that the tripping breakers exhibited individual quality variations.Specifically,the low silver content in the conductive metal on the contact surfaces led to higher resistive heating power,causing the overload thermal trip mechanism to malfunction under prolonged operation and resulting in atypical tripping.Additionally,the paper proposed conducting failure tests on a sample of breakers from the same batch before installation,providing a reference for the selection of electrical equipment,such as circuit breakers,in future shipbuilding projects.
作者
王鲸
刘俊
肖耀辉
WANG Jing;LIU Jun;XIAO Yaohui
出处
《中国修船》
2025年第4期5-9,共5页
China Shiprepair
关键词
船舶电网
特种船舶
微型断路器
触头
ship power grid
specialized ships
miniature circuit breaker
electrical contact
