Rens, JohanDe Kock, JanVan Wyk, WillieVan Zyl, Jacobus2017-02-092017-02-092014Rens, J. et al. 2014. The effect of real network phase disturbances on the calculation of IEC 61000-4-30 parameters. 16th International Conference on Harmonics and Quality of Power (ICHQP), 25-28 May:303-306. [https://doi.org/10.1109/ICHQP.2014.6842886]978-1-4673-6487-4 (Online)2164-0610 (Online)1540-6008http://hdl.handle.net/10394/20264https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6842886https://doi.org/10.1109/ICHQP.2014.6842886Real life network dynamic phenomena are used to demonstrate how the calculation of IEC 61000-4-30 parameters can be affected. The voltage frequency can change instantaneously at a point in the network due to a shift in the position of zero crosses when large reactive power changes occur. Pseudo voltage swells can be recorded and spectral leakage incurred. It is proposed that a 10/12-cycle block value for frequency is used in addition to the IEC 61000-4-30 10-second valuesenSVCPower qualityMinimum standards in quality of supplyIEC 61000-4-30½-Cycle rms10/12 Cycle blockVoltage frequencyClass AAsynchronous samplingPhase-locked loopSpectral leakagePresentation