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《Insulators and Surge Arresters》 2003-04
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Leakage Current Tester of MOA Based on Windows and Interpolated FFT

DU Yanxing,SHENG Zhongru,CHEN Jiming,LUO Yiping(Electrical Engineering College of Xi′an Jiaotong University,Xi′an 710049,China)  
A new model of leakage current tester of MOA(metal oxide arrester)is introduced.Based on the hardware of MCU and floating DSP,the software utilizes the windows and interpolated FFT algorithm,which can improve the measure precision of fundamental frequency component of resistive leakage current caused by unsynchronized sampling.It is proved by experiments that the tester is stable,of high precision and it also reveals well resistance against interference.What the tester gets can more preciously represent the working condition of MOA.
【CateGory Index】: TP274.4
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1 HAO Xi-wei1,YANG Da-wei2,LIU Guang-yan3,ZHANG Guan-jun1(1.State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China;2.Beijing Orient Institute of Test and Measurement,Beijing 100086,China;3.Shandong Electric Power Research Institute,Jinan 250002,China);Theoretical and Simulation Study on High Accuracy FFT Algorithm for tanδ Monitoring[J];High Voltage Apparatus;2009-02
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