发电机消弧线圈整定计算及档位选择  

Setting Calculation and Tap Selection of Generator Arc Suppression Coil

作　　者：陈啟豪 钱厚军 陈子明 易非凡 李景亳 张芸 刘欢 刘鹏 李书平 CHEN Qi-hao;QIAN Hou-jun;CHEN Zi-ming;YI Fei-fan;LI Jing-bo;ZHANG Yun;LIU Huan;LIU Peng;LI Shu-ping(China Nuclear Power Operation Management Co.,Ltd.,Haiyan,Zhejiang Prov.314300,China)

机构地区：[1]中核核电运行管理有限公司,浙江海盐314300

出　　处：《中国核电》2021年第4期497-499,共3页China Nuclear Power

摘　　要：秦一厂30万千瓦级发电机扩容改造后,发电机定子三相绕组的对地电容增加,需对发电机中性点消弧线圈重新整定计算,选择合适档位。通过对发电机一次系统主接线进行系统分析,提出等效电路模型,针对发电机发生机端单相接地这种最大故障工况进行分析计算,核算消弧线圈电感参数,选择合适档位,保证故障电流满足相关标准要求。本文对中性点经消弧线圈接地的同类型发电机具有一定参考意义。After the expansion and upgrading of the 300 MW generator in Qinshan NPP,the ground capacitance of the three-phase winding of the generator stator is increased,so it is necessary to recalculate and calculate the arc suppression coil at the neutral point of the generator and select the appropriate gear.Through the system analysis of the main wiring of the primary system of the generator,the equivalent mathematical model is proposed.The maximum fault condition of single-phase grounding of the generator is analyzed and calculated.The inductance parameters of the arc suppression coil are calculated and the appropriate gear is selected to ensure that the fault current meets relevant standard requirements.This paper has a certain reference significance to the same type of generator whose neutral point is grounded by arc suppression coil.

关 键 词：发电机 中性点经消弧线圈接地 单相接地故障 参数核算 

分 类 号：TM623[电气工程—电力系统及自动化]