避雷器配置对核电厂升压站直击雷防护范围的影响研究  

Influence of Arrester Configuration on the Protection Range of Direct Lightning in Step-up Substation for Nuclear Power Plant

作　　者：关寓丹 房崇豪 白玉卓 陈喆 李朋飞 郭洁[2] 全恒立 GUAN Yudan;FANG Chonghao;BAI Yuzhuo;CHEN Zhe;LI Pengfei;GUO Jie;QUAN Hengli(State Nuclear Electric Power Planning and Design Institute Co.,Ltd.,Beijing 100089,China;School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]国核电力规划设计研究院有限公司,北京100089 [2]西安交通大学电气工程学院,西安710049

出　　处：《电瓷避雷器》2021年第6期1-6,12,共7页Insulators and Surge Arresters

基　　金：国家电力投资集团有限公司科技项目(编号:2019ZX06004011-001)。

摘　　要：核电厂升压站直击雷防护范围确定方法主要有折线法和基于电气几何模型(EGM)的滚球法(以下简称EGM滚球法)。本研究在EGM滚球法基础上,利用电磁暂态仿真程序提出了一种改进滚球法。该方法给出的滚球半径考虑了被保护设备附近避雷器配置、避雷器残压与设备绝缘水平的配合系数,更符合实际工况,与EGM滚球法计算结算结果相比:滚球半径更大,防护范围更大。比传统的折线法更合理地考虑了系统的绝缘水平和雷电侧击的情况,为变电站直击雷防护提供了新的设计思路。The main methods to determine the protection range of booster station for nuclear power plant direct lightning are broken line method and the rolling ball method based on electrical geometry model(EGM)(hereinafter referred to as EGM rolling ball method).Based on the EGM rolling ball method, the author presents an improved rolling ball method using electromagnetic transient simulation program.The radius of the rolling ball given by this method takes into account the arrester configuration near the protected equipment and the coordination coefficient between the residual pressure of the arrester and the insulation level of the equipment, which is more in line with the actual working conditions. Compared with the calculation result of EGM rolling ball method, the radius of the rolling ball is larger and the protection range is larger.Compared with the traditional broken line method, the insulation level of the system and the situation of lightning side strike are considered more reasonably, which provides a new design idea for the substation direct lightning protection.

关 键 词：直击雷 EGM滚球法 折线法 绝缘水平 避雷针 避雷器 

分 类 号：TM862[电气工程—高电压与绝缘技术] TM623