摘要
为了解决直流电压互感器现场校验率低的问题,提出了一种基于低压等效法的直流电压互感器现场校验方法,采用直流分压器与二次测量系统分立校验的方法替代现有的整体误差校验方法.利用该校验方法对某±1100 kV换流站直流电压互感器进行误差校验试验.结果表明,该校验方法测量的误差与现有的整体误差校验方法测量的误差偏差小于0.05%,且该方法能够实现直流电压互感器的现场校验,从而可以有效缩减现场校验时间、减少工作量和降低现场校验安全隐患.
In order to overcome low field calibration rate for DC voltage transformer,a field calibration method for DC voltage transformer based on low voltage equivalent method was proposed.Discrete calibration method of DC voltage divider and secondary measurement system was used to replace the existing overall error calibration method.The as-proposed calibration method was applied to the error calibration test of DC voltage transformer in a±1100 kV converter station.The results show that the error deviation between the as-proposed calibration method and the existing overall error calibration method is less than 0.05%.The as-proposed calibration method can realize the field calibration of DC voltage transformer,and can greatly reduce the calibration time,workload and the potential safety hazard of field calibration.
作者
聂琪
胡浩亮
刘少波
李登云
曾非同
NIE Qi;HU Hao-liang;LIU Shao-bo;LI Deng-yun;ZENG Fei-tong(Department of Metrology, China Electric Power Research Institute Co.Ltd. , Wuhan 430074, China)
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2021年第1期12-16,共5页
Journal of Shenyang University of Technology
基金
国家重大科学仪器设备开发专项(2016YFF0102405)
中国电力科学研究院有限公司科技项目(JL83-19-009).
关键词
直流电压互感器
低压
换流站
特高压直流输电
分压器
二次测量系统
误差校验
阻抗影响
DC voltage transformer
low voltage
converter station
ultra high voltage DC transmission
voltage divider
secondary measurement system
error calibration
impedance effect
