摘要
船舶中压电力系统不可忽视的问题是系统对地分布电容较大,发生接地故障时会产生较大的容性故障电流。针对这一情况,本文开展理论研究,首先合理选择了发电机高阻接地方式。然后依据现有标准规范要求,通过参数计算得到了某船中压电力系统接地电阻值。最后,从限制系统过电压、保证人员安全、保证继保装置灵敏度等方面校验了接地电阻参数的合理性。
It could not be ignore that the distribution capacitance of shipboard medium voltage power system is relatively high, and there would be high fault current when grounding fault occurs in the system. Aimed at this problem, this paper conducts a theoretical research on choosing high resistance ground mode. Then the grounding resistance numerical value of one shipboard medium voltage power system is calculated based on standard specification. Finally, the rationality of the grounding resistance value is verified for the purpose of limiting system over voltage, ensuring personnel safety and guaranteeing sensitivity of relay protection.
出处
《船电技术》
2015年第4期9-12,共4页
Marine Electric & Electronic Engineering
关键词
中性点接地
船舶中压电力系统
发电机
参数计算
neutral grounded
shipboard medium voltage power system
generator
parameter calculation
