非接触式静电电压表计量误差分析及校准方法研究  

Study on measurement error analysis and calibration method of non-contact electrostatic voltmeter

作　　者：郭小妍[1] Guo Xiaoyan(Xi’an High Voltage Electrical Research Institute Co.,Ltd.,Xi’an 710077,China)

机构地区：[1]西安高压电器研究院有限责任公司

出　　处：《自动化与仪器仪表》2019年第11期48-51,共4页Automation & Instrumentation

基　　金：陕西省重大科技创新项目:±1 100 kV特高压直流电压测量装置(No.2014ZKC(-)01-02)

摘　　要：经过传统方法校准后的非接触式静电电压表在计量时准确度依然很低,因此,设计一种非接触式静电电压表校准方法。通过对非接触式静电电压表乘法器进行分析,发现其中的等效电路元件会受到谐振干扰,导致非接触式静电电压表计量出现误差,需要对其进行校准。对校准装置重新设计,用校准电极对乘法器谐振进行校准,利用经过校准的乘法器测试电压显示值与等效电阻共同计算校准系数,利用校准系数建立数学模型对谐振影响产生的不确定度进行优化,完成了非接触式静电电压表校准方法的设计。为了验证设计的非接触式静电电压表校准方法的有效性,进行了模拟实验,实验结果表明,经过设计的校准方法进行校准后的非接触式静电电压表的测量结果比传统方法更接近设定值,准确度更高。The accuracy of non-contact electrostatic voltmeter is still very low after the traditional calibration method,so a calibration method of non-contact electrostatic voltmeter is designed.Through the analysis of the non-contact electrostatic voltmeter multiplier,it is found that the equivalent circuit element will be affected by resonance interference,which leads to the measurement error of the non-contact electrostatic voltmeter,and it needs to be calibrated.For calibration device to design,the calibration electrode is used to calibration of multiplier resonance.Using the calibrated multiplier testing voltage value displayed with equivalent resistance,the calibration coefficients is calculated,and the mathematical model was established based on the calibration coefficient on the resonance effect of uncertainty optimization to complere the design of non-contact electrostatic voltage meter calibration method.In order to verify the effectiveness of the designed non-contact electrostatic voltmeter calibration method,a simulation experiment is conducted.The experimental results show that the designed non-contact electrostatic voltmeter calibration results are closer to the set value and more accurate than the traditional method.

关 键 词：非接触式静电电压表 计量误差分析 校准方法研究 校准系数 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]