中国电机工程学报2011，Vol.31Issue(31)：56-65,10.
特高压气体绝缘开关设备中特快速瞬态过电压测量用电容传感器的标定
Calibration of the Capacitive Sensor Used in the Very Fast Transient Overvoltage Measurement of Ultra High Voltage Gas Insulated Switchgear
摘要
Abstract
It is necessary to calibrate the hand hole capacitive sensors used for very fast transient overvoltage（VFTO） measurement in ultra high voltage（UHV） gas insulated switchgear（GIS） to ensure its accuracy.The calibration system developed in this paper consists of three impulse generators and corresponding measurement components.The system adopts a low voltage steep pulse generator to verify the sensor＇s high frequency characteristics,a high voltage steep pulse generator to verify the stability of the sensor under high voltage,and a long tail impulse generator to verify the sensor＇s low frequency characteristics.A water resistance divider and a metal film resistance divider were developed to measure the waveforms generated by the three impulse generators.The frequency characteristics and linearities of these resistance dividers used for calibration were verified.The calibration results show that the two types of capacitive sensors developed by North China Electric Power University and Tsinghai University function well in frequency characteristics,linearity and stability;and could meet the requirements of VFTO measurement in UHV GIS.关键词
特高压/气体绝缘开关设备/特快速瞬态过电压/电容传感器/标定/电阻分压器/陡脉冲源Key words
ultra high voltage（UHV）/gas insulated switchgear（GIS）/very fast transient overvoltages（VFTO）/capacitive sensor/calibration/resistance divider/steep pulse generator分类
信息技术与安全科学引用本文复制引用
丁卫东,李峰,张乔根,陈国强,刘洪涛,岳功昌,张博..特高压气体绝缘开关设备中特快速瞬态过电压测量用电容传感器的标定[J].中国电机工程学报,2011,31(31):56-65,10.基金项目
基金项目：国家重点基础研究发展计划项目（973项目)（2011CB209405) （）
国家电网公司科技项目（SGKJJSKF[2009]776)~~ （）
