短时过电流试验设备的校准方法研究  

Research on the calibration of short time over current experiment device

作　　者：王晨[1,2] 丁恒春[1,2] 姜振宇[1,2] 鲁观娜[1,2] 巨汉基[1,2] 李亭[1,2] Wang Chen Ding Hengchun Jiang Zhenyu Lu Guanna Ju Hanji Li Ting(Metering Center of Research Institute, State Grid Jibei Electric Power Co., Ltd., Beijing 102208, China North China Electric Power Research Institute Co., Ltd., Beijing 100045, China)

机构地区：[1]国网冀北电力有限公司电力科学研究院计量中心,北京102208 [2]华北电力科学研究院有限责任公司,北京100045

出　　处：《电测与仪表》2017年第15期107-112,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51577006)

摘　　要：短时过电流试验是评价电气设备耐受瞬时大电流能力的重要试验项目,对于评价电气设备实际运行中的安全性能具有重要的意义。通过具体实例,基于电流钳和数字示波器试验设备,提出一种校准短时过电流试验设备的方法,并详细地评定测量不确定度,为短时过电流试验的顺利开展提供技术依据。Short time over current effect experiment is significant on testing capability of tolerating instantaneous large current in electrical device, and both on calibrating working performance of smart meters. This paper proposes a novel approach of calibrating the short time over current experiment approach by using current clamp and digital oscillo- scope, and describes the method of evaluating measurement uncertainly. This approach, which the calibration preci- sion and uniformity are confirmed through result comparison, can provide important technology base for short time over current effect experiment.

关 键 词：短时过电流试验 校准 测量不确定度评定 

分 类 号：TM933[电气工程—电力电子与电力传动]