CAJ | 학술논문

为保证特高压气体绝缘开关设备（gas insulatedswitchgear,GIS）中特快速瞬态过电压（very fast transientovervoltage,VFTO）测量用手孔式电容传感器的准确性,必须对其进行标定。研制了用于电容传感器的标定系统,它由3种不同幅值及波形的脉冲源及相应测量系统组成。其中：低电压陡脉冲源用于校验电容传感器的高频特性;高电压陡脉冲源用于校验传感器在高压下的稳定性;低电压长波尾电源用于校验传感器的低频特性。水电阻分压器及金属膜电阻分压器用于测量3种脉冲源的输出波形,在标定电容分压器前,对电阻分压器的频率特性及线性度特性进行了试验。电容传感器的标定试验结果表明,华北电力大学和清华大学研制的电容传感器均具有良好的频率特性、线性度和稳定性,可以满足特高压GIS设备VFTO测量工作的需要。
위보증특고압기체절연개관설비（gas insulatedswitchgear,GIS）중특쾌속순태과전압（very fast transientovervoltage,VFTO）측량용수공식전용전감기적준학성,필수대기진행표정。연제료용우전용전감기적표정계통,타유3충불동폭치급파형적맥충원급상응측량계통조성。기중：저전압두맥충원용우교험전용전감기적고빈특성;고전압두맥충원용우교험전감기재고압하적은정성;저전압장파미전원용우교험전감기적저빈특성。수전조분압기급금속막전조분압기용우측량3충맥충원적수출파형,재표정전용분압기전,대전조분압기적빈솔특성급선성도특성진행료시험。전용전감기적표정시험결과표명,화북전력대학화청화대학연제적전용전감기균구유량호적빈솔특성、선성도화은정성,가이만족특고압GIS설비VFTO측량공작적수요。
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.