压电陶瓷式电子电压互感器的信号处理方法

Signal processing methods of piezoelectric ceramic electronic voltage transformer

为了提高压电陶瓷式电子电压互感器的静态和暂态稳定性,针对其非接触测量方式的特点,提出一种基于恒光强控制电路的光/电转换方案并开发了与之对应的动态误差补偿系统,编写了数字化程序,解析了信号处理过程中的相关问题,最终提供数字量和模拟量两类输出信号。利用该方法对10 kV压电陶瓷式电压互感器样机进行数据采集,数据表明,该信号处理装置性能稳定,能有效提高压电陶瓷式电压互感器的动态稳定性,从而提高电压互感器的精确度。

To improve static and transient stability of the piezoelectric ceramic voltage transformer electronic,for its characteristics of non-contact measurement,the paper presents the light / electricity conversion program based on constant light intensity control circuit and the development of the corresponding dynamic error compensation system,writes the digital procedure,and resolves related problems of signal processing,to ultimately provide two types of digital and analog output signals.Using this method,it collects the data of 10 kV piezoelectric ceramic voltage transformer prototype.The data shows that the signal processing device performance is stable,can improve the dynamic stability of piezoelectric ceramic voltage transformer,and thus can enhance the accuracy degree of the voltage transformer.