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《Electrical Measurement & Instrumentation》 2007-06
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Approach for the fundamental wave frequency measurement of power network based on the filter method

REN Hong-lin1,WANG Jia-lin1,CHEN Yue-ming1,HOU Wen-bin2(1.School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China; 2.Heilongjiang Electric Power Staff University,Harbin 150001,China)  
Band pass filter is designed with bell impulse function.The time and frequency domain math model and its discrete time domain model of the filter are presented,and its numerical integral arithmetic is researched.The filter has strong resistibility for non-periodic,low frequency and high-order harmonic signals.Consequently,the approach for the fundamental wave frequency measurement of power network is presented.The simulation results demonstrate that this approach has high accuracy for the frequency measurement,and strong resistibility for non-periodic,low frequency and high-order harmonic signals.The research result provides an effective approach for the accurate fundamental wave frequency measurement of the power network.
【CateGory Index】: TM935.1
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