Harmonic wave analysis method for electric energy quality harmonic wave analyzer
A harmonic analysis and power quality technology, applied in the field of high-precision harmonic analysis, can solve the problems of unreliability, short-range leakage, and low accuracy of analysis results, and achieve the effect of easy implementation and simple algorithm
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[0035] The power quality harmonic analyzer is mainly composed of sensors, signal conditioning circuits, data acquisition circuits, CPU, LCD unit and corresponding analysis software. The sensor generally uses a voltage transformer and a current transformer to convert the high voltage and high current signals of the measured power grid in a certain proportion; the signal conditioning circuit converts the voltage and current signals sent by the sensor into voltage signals suitable for data acquisition circuit sampling ; The conditioned signal is sampled by the data acquisition circuit, and then the analysis and detection of the harmonics is completed by the CPU through the analysis software.
[0036] The harmonic analysis method of the power quality harmonic analyzer of the present invention comprises the following steps:
[0037]First, the CPU unit samples the electrical signal X that requires harmonic analysis in the power grid, and samples W+2 sampling points at equal interval...
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