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Tag Archives: harmonics
GPS disciplined oscillator for long-term synchronized harmonic measurements
Measurement process is one of the most important issues during wind turbine generator (WTG) and wind power plant (WPP) evaluation and requires careful approach. Accurate measurements of harmonic voltages and currents in offshore WPPs followed by proper data analysis are … Continue reading
Posted in Harmonics, Measurements, Wind Farms
Tagged harmonics, measurements, synchronization
2 Comments
Harmonic mitigation methods in wind power plants
There are various techniques for dealing with the harmonic problem in large wind power plants (WPPs) depending upon the nature and source of the problem. Large offshore WPPs are characterized by complex structures including wide application of power electronic devices … Continue reading
Posted in Harmonics, Wind Farms
Tagged active filtering, harmonics, passive filtering, wind farm
2 Comments
Harmonic problems in wind power plants
Harmonics has always been of special concern in power system studies. In the past the power system comprised mainly of passive components with relatively linear operating range and synchronous generators. Harmonic analysis of such systems is the state-of-the art right … Continue reading
Wind turbine harmonic models
Harmonic emission is recognized as a power quality concern for modern variable-speed wind turbines. For this reason, relevant standards (e.g. IEC 61400-21) require the measurement of harmonics and their inclusion in the power quality certificates of wind turbines. Understanding the … Continue reading
Oversampling (resampling) data in harmonic data processing
When using a rectangular window, it is important to synchronize the measurement window accurately with the power system frequency to achieve integer multiple of periods in analysed time series (i.e. window period is and integer multiple of analysed frequency component natural period). For … Continue reading