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- W2353129625 abstract "In many power system protection and control schemes it is necessary to accurately measure and track the system frequency.It is important to carry out on-line calculation of the supply frequency and its variation.Extra care is also needed to deal with significant frequency fluctuations to ensure satisfactory interpretation of the measurements.Conventional techniques assume that the waveform to be analysed is a pure sine wave.However, this paper presented the development of an innovative and reliable frequency-tracking technique based on digital filtering and does not rely on the sinusoidal assumption.The proposed power system frequency estimation algorithm does not require DFT,least squares estimation and orthogonal filters.The new and effective algorithm is based on a digital all-pass filter only.The estimated frequency derived from the fundamental and filtered fundamental components is not affected by any shift in the system frequency. The algorithm does not require expensive high speed microprocessor such as digital signal processor.It is very easy and straight forward to implement the frequency estimation algorithm in real time with low cost microcontroller.Site measurement and computer simulation will be presented to demonstrate that the method proposed in this paper to measure fluctuating frequencies in the mains is technically superior to the previous approaches." @default.
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- W2353129625 date "2004-06-01" @default.
- W2353129625 modified "2023-09-23" @default.
- W2353129625 title "A NEW TRACKING ALGORITHM FOR POWER SYSTEM FREQUENCY" @default.
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