高电压技术2011，Vol.37Issue(12)：3053-3058,6.
±800kV直流输电系统换流站直流电流互感器现场校准技术
On-site Calibration Technology of DC Current Measurement Device in Converter Station of ±800 kV UHVDC Transmission Project
摘要
Abstract
The on-site calibrations of the DC current measurement devices in HVDC projects have not been carried out due to the lacking of the calibration equipments.This situation will potentially threaten the safe running of the DC transmission system and will restrict the promotion of the control and protect system to some extent,as the application of HVDC has become more and more widely in power system,it is necessary to involve the on-site calibration of the DC current measurement device as a routing test to prevent the system failure.An on-site calibration system for DC current measurement devices has been developed,consisting of a ratio standard of DC current measurement,a lightweight 5000 A current source of high output stability and a data collection system using the GPS wireless synchronization technology.Furthermore,the on-site calibration test of the pole optical current transducer（OCT） in Fulong convert station of Xiang-Shang ±800 kV UHVDC Transmission Project has been successfully carried out with testing current of 4000 A.The measurement errors of the OCTs were better than 0.3% with the testing current above 800 A.The performances of the OCTs under test were analyzed according to the experiment results.It is suggested to push the technique in the hand over inspections and routine tests of the DC current measurement device.关键词
换流站/光电流互感器/误差/现场校准/GPS/无线同步测量Key words
converter station/optical current transducer（OCT）/error/on-site calibration/GPS/wireless synchronization measurement分类
信息技术与安全科学引用本文复制引用
李前,李鹤,周一飞,李登云,胡浩亮,章述汉..±800kV直流输电系统换流站直流电流互感器现场校准技术[J].高电压技术,2011,37(12):3053-3058,6.基金项目
国家电网公司科技项目（SG0919）~~ （）
