高电压技术2011，Vol.37Issue(9)：2119-2125,7.
±800kV换流站直流电压互感器现场校准试验
On-site Calibration Test of ±800 kV Convertor Station DC Potential Transformer
摘要
Abstract
DC potential transformer（DCTV） plays an important role in HVDC transmission system for its safety and steady operation.Taking the pole bus DCTV in ±800 kV Fulong converter station as an example,we researched the principle of DCTV,and developed a set of HVDC standard setup used in converter station for calibration test on site.The setup was made up of a standard divider and a measurement device with synchronous data acquisition system.Moreover,we constructed an appropriate circuit for calibration test on site,and performed the calibration test on site at rated voltage for the pole bus DCTV in Fulong converter station.Test results reveal that,when voltage range is from 0 to 500 kV,the relatively error of the scale factor of standard resistor DC voltage divider is less than 0.05%,and the linearity is 0.03%;when voltage range is from 0 to 800 kV,the linearity of the scale factor of standard resistor DC voltage divider is less than 0.05%;the scale factor accuracy of DCTV at pole bus Ⅰ in Fulong converter station meets the demands of 0.2 class,the linearity is 0.27%,and the scale factor decreases gradually as the voltage increases.Meanwhile,the setup can well perform the on-site calibration test for ±800 kV UHV DCTV.关键词
直流电压互感器（DCTV）/高压直流输电系统/极线/标准分压器/同步数据采集系统/现场校准试验Key words
DC potential transformer（DCTV）/HVDC transmission system/pole bus/standard divider/synchronous data acquisition system/on-site calibration test分类
信息技术与安全科学引用本文复制引用
章述汉,周一飞,李登云,王韬,李前,李鹤..±800kV换流站直流电压互感器现场校准试验[J].高电压技术,2011,37(9):2119-2125,7.基金项目
国家电网公司科技项目 （）
