千安级宽频交流大电流校准系统研究  

Research on kA Level Wideband AC High Current Calibration System

作　　者：陈少华[1] 余和真 王书强[1] 金海彬[1] 黄晨 CHEN Shaohua;YU Hezhen;WANG Shuqiang;JIN Haibin;HUANG Chen(Beijing Orient Institute of Measurement and Test,Beijing 100086,China;National Institute of Metrology,Beijing 100029,China)

机构地区：[1]北京东方计量测试研究所,北京100086 [2]中国计量科学研究院,北京100029

出　　处：《计量学报》2025年第1期36-41,共6页Acta Metrologica Sinica

基　　金：国防技术基础科研项目(JSJL2019203A010)。

摘　　要：介绍了一种千安级宽频交流大电流的校准系统,可解决电流范围最大到2 kA、频率从50 Hz~1 kHz的交流大电流的校准问题。为了保证交流大电流溯源链的完整性,开展了补偿式交流电流比率校准方法研究,研制了一套可以覆盖比率到1000∶1、频率到1 kHz的交流电流比率校准系统,解决了关键的非工频电流比率标准溯源问题,并进行了相关测试,以验证交流电流比自校准系统的量传可靠性。通过该校准系统可对被测交流大电流源开展校准试验,验证结果表明系统的扩展不确定度约为2.4×10^(-4),满足大部分宽频交流大电流校准需求。The kA level wideband AC high current calibration system is introduced to stress the calibration of AC high current with a maximum range of 2 kA and frequency of 50 Hz~1 kHz.To ensure the integrity of the AC high current traceability chain,the calibration method of compensated AC current ratio standard has been studied.A set of AC current ratio calibration devices that can cover ratios up to 1000∶1 and frequencies up to 1 kHz has been developed,solving the key issue of non-power frequency current ratio standard traceability.Related tests have been conducted to verify the reliability of the quantity transmission of the AC current ratio self-calibration system.Through the establishment of wideband AC high current calibration system,calibration experiments were conducted on the tested AC high current source.It was verified that the expanded uncertainty of the system is about 2.4×10^(-4),which could meet the calibration requirements of most wideband AC high current devices.

关 键 词：电学计量 千安级宽频交流大电流 电流比率 校准系统 溯源 

分 类 号：TB971[一般工业技术—计量学]