基于PSCAD/EMTDC的核电厂辅助变压器空载分闸瞬态仿真分析  

PSCAD/EMTDC-based Transient Simulation Analysis of No-load Opening of Nuclear Plant Auxiliary Transformers

作　　者：段琰璞 倪爽 DUAN Yanpu;NI Shuang(State Nuclear Power Demonstration Plant Co.,Ltd.,Rongcheng 264300,China)

机构地区：[1]国核示范电站有限责任公司,山东荣成264300

出　　处：《电工技术》2024年第15期137-139,142,共4页Electric Engineering

摘　　要：某核电厂辅助变压器在空载分闸瞬间内部发出短促的金属挫动声。为进一步分析分闸异响原因,基于PSCAD/EMTDC平台,建立了220 kV辅助电源系统仿真模型,分别对高压电缆、架空线、改变接地方式、改变中性点接地方式、增加低抗、增加快速接地刀闸等情况进行了计算分析,从而解释了异响原因。The purpose of this study was to analyze the cause of abnormal metal rattling sound generated inside the auxiliary transformer of an actual nuclear power plant and observed at the moment of no-load switch opening.A simulative model for 220 kV auxiliary supply system was established based on PSCAD/EMTDC,and computational analyses on the conditions such as high-voltage cables,overhead lines,grounding mode changes,neutral point grounding mode changes,addition of low-voltage reactors,and addition of fast grounding switches,were performed to determine the causes of abnormal noise.

关 键 词：PSCAD/EMTDC 空载分闸 异响 仿真分析 

分 类 号：TL48[核科学技术—核技术及应用]