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Study on Power Frequency Parameter Variable-frequency Electrical Measurement of Transmission Line

Author: LuWenXi
Tutor: LiangZhiRui
School: North China Electric Power University (Hebei)
Course: Proceedings of the
Keywords: power transmission line power frequency interference 89C52 variable-frequency power sources frequency-tracking
CLC: TM933
Type: Master's thesis
Year: 2009
Downloads: 105
Quote: 1
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Abstract


Transmission line is an important part of power system. Line-frequency parameters of transmission consist of positive-sequence parameters, zero-sequence parameters, mutual inductance impedance and so on. All the parameters are necessary for setting the mode of the power system. Power frequency interference is an important problem of the frequency parameters measurement. It used EMTP to stimulate the power frequency interference to come to a conclusion that the power interference can affect the accuracy of measuring result seriously. It used the improved-variable frequency electrical measurement to avoid the interference. It designed the hardware circuits, including analog circuits, digital circuits with the core of 89C52, circuit of Semi-frequency signal source, and so on. Finally, we used the frequency measurement method to complete the latter part of the parameters calculation.

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CLC: > Industrial Technology > Electrotechnical > Electrical measurement techniques and instruments > Power the number of measurements and instrumentation
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