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秦三厂低压厂用配电系统接地保护配置问题分析与改进

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秦三厂运行期间,400 V低压厂用配电(54000)系统出现动力中心(PCC)接地保护越级跳闸问题,导致配电系统和工艺系统可靠性降低.在案例分析的基础上,结合国内设计标准和同行经验,就接地保护定值的整定给出解决方案,并为后续机组装置选型提出合理建议.
Analysis and Improvement of Ground Protection Problems of Internal Secondary Distribution System in Qinshan CANDU Plant
During the operation of Qinshan CANDU Nuclear Power Plant,internal secondary distribution system encoun-tered override trip of power control center(PCC)ground protection,resulting in reduced reliability of the distribution sys-tem and the process system.On the basis of case analysis,combined with domestic design standards and peer experience,this paper gives solutions from the perspective of for the tuning of ground protection,and puts forward rational sugges-tions for the posterior type selection of unit equipment.

internal secondary distribution systempower control centermotor control centerground protection

张健、刘徽、许佳杰

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中核核电运行管理有限公司技术三处,浙江 嘉兴 314300

低压厂用配电系统 动力中心 电机控制中心 接地保护

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(21)