变压器移相角的数字测量方法及其比较

变压器输入输出电源之间的相位差是其性能测试的一个重要指标。文章介绍了三种利用计算机实现的数字相位检测方法的原理、误差来源与现有的改进方法，并根据精度与实现复杂性这两个指标对三种方法进行了分析、比较与取舍，并给出了仿真实验的结果与实际应用的例子。实验结果表明数字测量的方法可以实现很高的相位测量精度。

Digital Methods of Transformer Phase Shift Detection and Their Comparison

Phase variance between the input and output voltage of a transformer is an important issue in transformer character measurement Three suitable digital phase detection methods are introduced in these applications, altogether with their principles, sources of error and current possible methods of improvement These methods are analyzed, compared and selected based on their precision and implementation complexity A computer simulation result and an application example are presented It shows that digital methods of phase detection can effectively achieve very high accuracy