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《Electrical Measurement & Instrumentation》 2003-07
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Application of harmonics analysis approach based on modified ideal sampling frequency in on-line measuring tanδ

Wang Nan,Lu Fangcheng,Liang Ying (North China Electric Power University,Hebei Baoding 071003,China)  
When applying harmonics analysis approach to measure tan8 on-line, because of asynchronous sampling caused by fluctuation of system frequency,the measurement accuracy will be influenced by leakage error.To increase the accuracy,in this paper,the reason of leakage error is analyzed firstly.Then improved approach based on modified ideal sampling frequency is brought forward.Simulation results verify that the improved approach have higher accuracy,and easy to realize.
【CateGory Index】: TM764
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