双波形冲击电流试验平台及其应用.pdf

研究与开发
双波形冲击电流试验平台及其应用
陈勇斌’傅正财2王培
(1.浙江省嘉兴市气象局,浙江嘉兴314050;2.上海交通大学电气工程系,上海200030)
摘要大型冲击电流试验平台是防雷器件测试和质量检验的关键设备。本文介绍一种可以通过
简单的回路转换即可方便地实现100kA的8/20s波形和20kA的10/350s波形输出的冲击电流试验
平台。介绍回路本体设计、控制、测量和调波等关键技术,以及实验室建设中的屏蔽、接地和隔离
等保障措施。并讨论了试验平合在SPD质量检验应用中的测试比对,试品对回路的影响以及一些实
测中积累的测试经验。该试验平台能满足本地区防雷器件质量检验的基本要求,其运行操作可靠方
便,可供系统内检测实验室建设时参考
关键词:冲击电流发生器;波形调节;浪涌保护器;防雷设施;质量检验
Impulse Current Generator With Dual Waveform Output and Its Application
Chem Yongbin Fu Zhengcai Wang Per
1 Jiaxing Meteorological Bureau of Zhengjiang Province, Jiaxing, Zheiiang 314050
2 Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200030
Abstract Large-scale impulse current test platform is the key equipment for lightning protection
production tests and its quality inspection. Ihis paper introduced an impulse current test platform which can
conveniently realizes the output of 100KA 8/20us waveform and 20KA 10/350us waveform through simple
circuit connection switchover. Some important technologies of the main body designing, measuring and
controling, and wave-adjusting were introduced. Furthermore, some laboratory safeguard mechanisms were
explained, including shielding, rounding and isolation. Test comparasion of the test platform in lightning
arrester quality checking, the influence of EUT to the circuit output, as well as some actual accumulated test
experiences were also discussed. The test platform can satisfy the essential requirements of quality inspection
for the local lightning protection center. The operation of the plateform is reliable and convenient. The
experiences can be refered in the construction of lightning protection device test laboratories
Key words: impulse current generator: waveform adjustment: SPD test; lightning protection device
Inspection
引言
结合浙江防雷工作实际,电涌保护器(SPD)的漏电
流、压敏电压、标称电流、残压、最大电流等性能参
宙灾已成为联合国“减灾十年”公布的十种自数都需要检测,为此我局雷电实验室建设了100kA
然灾害之一,雷电防护工作引起社会各界重视,防雷的8/20s波形和20kA的103508波形输出的冲击
产品被广泛应用。防雷产品的性能关系到整个防雷工电流试验平台。本文介绍该测试平台的研制、建设和
程的质量,是雷电防护工程是否成功的关键因素之应用中的关键技术和经验
一,因此有必要对防雷产品进行全面的和日常的检
测。大型冲击电流试验平台是防雷器件质量检验的关2双波形冲击电流测试平台原理
键设备,根据国际和我国防雷器件测试的主要标准2.1测试平台的本体回路及其设计
IEC61643-12005、IEC61643-21:2005]和GB/T
充电装置和发生器本体包括可控硅、原边充电
18802.1:2004?、GB/T18802.21:2004的测试要求,电阻、充电变压器、高压硅整流器、直流电阻分压
2010年第9期电气技朮9