含工频续流的冲击低压联合试验回路  

A low-voltage united test circuit containing continuous power frequency current

作　　者：冷小聪 许军[2] 郭婷[1] 黄海鲲[2] 齐小军 喻剑辉[1] 周文俊[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]国网福建省电力有限公司电力科学研究院,福建福州350000 [3]武汉新电电气技术有限公司,湖北武汉430073

出　　处：《武汉大学学报（工学版）》2016年第2期242-246,共5页Engineering Journal of Wuhan University

摘　　要：为评估380V/220V电气设备在雷电冲击波与工频电源共同作用下的动作特性,设计了冲击试验与工频续流试验同步进行的联合试验回路.通过对RLC串并联谐振回路谐振特性的研究,利用ATP-EMTP对联合试验回路各元件的参数进行了仿真计算,设计出了一种含工频续流的可靠冲击联合试验回路,采用同步控制回路解决了冲击试验与工频续流试验同步的问题.试验表明:该联合回路能在产生1.2/50μs冲击波形的同时产生频率约为50Hz的正弦电流波形,满足检测低压设备在雷电冲击波与工频电源共同作用下动作特性的要求.A united test circuit combined lightning impulse test with continuous power frequency current test has been designed in order to study the action characteristics of the 380V/220 Velectrical equipment under the combined action of lightning impulse and power frequency electrical source.Through studying the resonant characteristics in RLC circuit,the parameters of each element in the united test circuit have been calculated by using ATP-EMTP;at least a low-voltage united test circuit has been designed.And the synchronization problem of lightning impulse test and continuous power frequency current test has been solved by the synchronous control circuit.The test results show that the united test circuit can generate a1.2/50μs impulse current and a power frequency current at the same time;that can meet the requirements of testing the action characteristics of the low-voltage electrical equipment under the combined action of lightning impulse and power frequency.

关 键 词：雷电冲击波 工频续流 联合试验 RLC串并联谐振 

分 类 号：TM712[电气工程—电力系统及自动化]