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文章摘要
电子式互感器相位补偿方法的研究和比较
Research and Comparison on Phase Compensation Schemes for Electronic Transformer
Received:October 20, 2013  Revised:October 20, 2013
DOI:
中文关键词: 电子式互感器  相位误差  测量精度  相位补偿  谐波
英文关键词: electronic transformer  phase error  measurement accuracy  phase compensation  harmonic
基金项目:国家自然科学基金(51077058,51277080) 江苏省电力公司科技项目(J2012035)
Author NameAffiliationE-mail
zhupeng State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology xyxp05@163.com 
likaicheng* State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology likaicheng@hust.edu.cn 
sunjian Jiangsu Electric Power Research Institute  
hehao State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology  
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中文摘要:
      电子式互感器的相位误差是影响互感器测量精度的重要因素,可以采用相位补偿方法对其加以校正。文章给出了电子式互感器的设计原理,分析了电子式互感器相位误差产生的原因,介绍了全通滤波器、短数据窗移相算法、傅立叶移相算法等相位补偿方法,研究了谐波对上述补偿方法的影响,在此基础上提出了改进的相位补偿方法:移点法和线性相位全通滤波法,并进行了实验测试。实验结果表明,互感器的角差满足0.2级测量精度要求,改进的相位补偿方法具有可行性。
英文摘要:
      The phase error of electronic transformer is an important factor which influences the measurement accuracy. However,the phase error can be modified through proper phase compensation scheme. This paper introduces the principle of the electronic transformer and analyses the causes of phase error. The phase compensation schemes, such as all-pass filter, phase-shifted algorithm of short data window, phase-shifted algorithm of Fourier are introduced. The influence of the harmonic is also researched. On this basis, the paper puts forward the improved schemes of phase compensation: sampling points removed and the linear phase of all-pass filter. The experiment shows that the phase error of transformer can meet the class 0.2 accuracy requirements and with feasibility.
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