基于不同结构分类的金属氧化物避雷器电气特性对比分析  

Comparative Study and Analysis of Electrical Characteristics for Metal-oxide Surge Arresters Based on Various Structural Classifications

作　　者：张力[1] 杨焜 何丽梅 

机构地区：[1]西华大学电气信息学院,四川成都610039 [2]中国石油工程设计有限公司西南分公司,四川成都610041

出　　处：《西华大学学报（自然科学版）》2014年第6期16-19,41,共5页Journal of Xihua University:Natural Science Edition

基　　金：教育部重点实验室学术成果培育项目"流体及动力机械"(SBZDPY-11-15);四川省教育厅自然科学重点项目(11ZA280)

摘　　要：总结金属氧化物避雷器电气特性的考核指标体系:额定电压Ur、持续运行电压Uc、标称放电电流In、保护水平与绝缘配合系数Ks等,并基于不同的结构特征分别进行了说明。以10 k V配电系统为例,测算与校验了2种结构特征(无间隙与带串联间隙)金属氧化物避雷器的主要特性参数;结合测算结果与实际工程案例,针对金属氧化物避雷器工作中发生爆炸等安全事故的原因进行分析,并提出了合理化建议,促进中压电力系统中金属氧化物避雷器的正确使用,并进一步提高对电气设备过电压的有效保护。In the paper, an index system for electrical characteristics of metal-oxide surge arresters is systematically summarized, which contains rated voltage （ Ur ）, continuous operating voltage （ Uc ）, nominal discharge current （ In ）, overvoltage protection and insulation coordination coefficient （Ks ） , which are described based on various structural functions. Also, taking 10 kV power distribution system as an example, the main parameters of metal-oxide surge arresters without gaps and metal-oxide surge arresters containing series gapped structures are measured and checked. Combined the results with actual engineering cases, aiming at the safety accidents （ such as explosion and etc. ） in the use of metal-oxide surge arresters, the paper analyzes the causes and puts forward reasonable suggestions to promote the correct use of metal-oxide surge arresters in MV power system, and further to improve its effective utilization of electrical equipment overvoltage protection.

关 键 词：无间隙金属氧化物避雷器 带串联间隙金属氧化物避雷器 电气特性 结构分类 对比分析 

分 类 号：TM862[电气工程—高电压与绝缘技术]