变压器相位检测方法的研究  

Method of measuring transformer phase

作　　者：周小平[1] 何丰[1] 黄涛[2] 

机构地区：[1]重庆邮电学院,重庆400065 [2]南昌大学信息工程学院,江西南昌330029

出　　处：《重庆邮电学院学报（自然科学版）》2005年第5期587-588,593,共3页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

摘　　要：正弦信号的相位检测是许多测量工程的一项基本而重要的任务。讨论了利用改进的I-Q解调法进行变压器相位检测的原理,对实际信号处理流程和测量误差进行了分析,并进行了仿真研究。结果表明:I-Q解调法从实时性、检测精度和抑制噪声能力等方面都优于其他常规方法。该方法已成功应用于变压器的相位检测中。Measurement of the phase shift between two sinewave signals is an important and fundamental task in many test and measurement systems. In order to utilize the digital signal processing technology to improve the accuracy and reliability of measurement system, the improved I-Q demodulation algorithm is developed in this paper. The signal processing flow chart and the error analysis are discussed in details. Simulation results show that the proprosed method gains performance superior to traditional total-squares method and Fourier transform algorithms. And the algorithm has been applied successfully in the transformer parameter measurement.

关 键 词：相位检测 I-Q解调法 相移变压器 

分 类 号：TM933.311[电气工程—电力电子与电力传动]