一种双端驱动静电振膜式电压互感器  

Dual-end electrostatic film vibration voltage transformer

作　　者：邹阳[1] 徐启峰[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电力自动化设备》2015年第4期156-161,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51177016)~~

摘　　要：设计了一种双端驱动静电振膜式电压互感器（DEFVVT）,其通过测量静电薄膜的微振动来测量电压。详细推导了被测电压与薄膜振动间的函数关系,根据薄膜微振动的表达式给出了被测电压的还原方法。介绍了高精度微振动检测方法在DEFVVT中的应用。Simulink仿真结果表明所设计的DEFVVT的测量准确度可以达到0.2级,暂态带宽响应更好,且响应速度更快。实验结果表明,在80%-120%的额定电压范围内,所设计的DEFVVT的测量线性度好,测量结果准确度接近1级。A kind of DEFVVT（ Dual- end Electrostatic Film Vibration Voltage Transformer） is designed,which measures voltage by the micro-vibration of electrostatic film. The functional relationship between measured voltage and film vibration is deduced,according to which,the recovery method of measured voltage is given. The application of high-precision micro-vibration detection in DEFVVT is introduced. The simulative results by Simulink show that the measurement accuracy of the designed DEFVVT reaches grade0.2,its transient bandwidth response is better and its response speed is higher. Experimental results show that,from 80 % to 120 % of the rated voltage,it has good measurement linearity and its measurement accuracy is close to grade 1.

关 键 词：电压互感器 静电薄膜 微振动检测 线性测量 精度 设计 

分 类 号：TM932[电气工程—电力电子与电力传动]