工程设计学报2018，Vol.25Issue(1)：56-61,6.DOI:10.3785/j.issn.1006-754X.2018.01.008
基于自适应频率跟踪的基波提取算法应用研究
Research on application of fundamental wave extraction algorithm based on adaptive frequency tracking
摘要
Abstract
In order to eliminate the influence of spectrum leakage and fence effect on the funda-mental wave extracting,extract the fundamental component quickly and accurately,and finish the accurate calculation of the ratio difference and the angle difference,the fundamental wave ex-traction algorithm based on adaptive frequency tracking was used in the transformer calibrator au-tomatic verification system to extract the fundamental component.In the automatic verification process,the calibrator checked the output signal of the verification device and extracted the fun-damental component of the signal,then calculated the ratio difference and the angle difference. The system PC compared the calculated results to determine the verification effect of the trans-former calibrator.The simulation experiment showed that the fundamental wave extraction algo-rithm based on adaptive frequency tracking could steadily track the frequency which changed slowly and the tracking error could be controlled between 0 to 0.02 Hz.The test accuracy of the ratio difference and the angle difference with the algorithm could reach 0.002 8% and 0.012% re-spectively,so the system calibration accuracy could reach 0.05 level.T he test results indicated the algorithm could track and record the fluctuation of the grid frequency at 50,50.5 Hz in real time, and overcome the fundamental frequency of the fundamental frequency caused by the fluctuation,which greatly improve the accuracy of the fundamental component extraction.The research results show that the fundamental wave extraction algorithm has a certain effectiveness and practicability in the verification of the transformer calibrator.关键词
互感器校验仪自动检定系统/自适应频率跟踪/频率缓变/比差/角差/检定精度Key words
transformer calibrator automatic verification system/adaptive frequency tracking/frequency changed slowly/ratio difference/angle difference/test accuracy分类
机械制造引用本文复制引用
汪应龙,刘爱莲,翟少磊,朱全聪,顾红波,李川..基于自适应频率跟踪的基波提取算法应用研究[J].工程设计学报,2018,25(1):56-61,6.基金项目
国家自然科学基金资助项目(51567013) （51567013）
中国南方电网有限责任公司科技项目(YNKJXM00000245) （YNKJXM00000245）
