A time and frequency based testing and measurement methodology for characterization of electric vehicle charging-induced disturbances

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Seferi, Yljon and Gonzalez-Ramos, Jon and Corr, Edward Joseph and Stewart, Brian and de la Vega, David and Burt, Graeme and Fernandez, Igor; (2026) A time and frequency based testing and measurement methodology for characterization of electric vehicle charging-induced disturbances. In: 2026 IEEE 16th International Workshop on Applied Measurements for Power Systems (AMPS). IEEE International Workshop on Applied Measurements for Power Systems (AMPS) . IEEE, ESP. (In Press)

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Abstract

Electric vehicles (EV) charging processes pose challenges for electrical distribution networks, particularly in terms of increased electromagnetic disturbances and variations in grid impedance. Harmonic and supraharmonic emissions have been investigated only partially under certain scenarios, due to constraints on testing conditions in laboratory or realgrid operating conditions. Other aspects, such as variation of voltage, frequency, and background disturbance levels, the disturbance propagation across the network, and the influence on the frequency-dependent grid impedance, have not been analysed sufficiently. In this work, a new comprehensive EV testing and measurement methodology is proposed for the analysis of these issues. The proposed methodology is based on a flexible and equipped testbench, which employs several dedicated measurement systems to obtain representative metrics, and a specific schedule to test cross-influence between parameters. The testbench is a realistic distribution feeder with several EV chargers, featuring flexibility in the extension of the grid, full control of the charging process, and selectivity of EV charger connection point along the feeder. Three measurement systems are used to capture simultaneously current and voltage disturbances up to 150 kHz across the feeder, as well as voltage disturbances and grid impedance variations up to 500 kHz. The methodology also enables the correlation of frequencydependent grid impedance with variations in harmonic emissions, further supporting a deeper understanding of the conditions that may influence electricity meter accuracy in EVrich distribution networks.

ORCID iDs

Seferi, Yljon ORCID logoORCID: https://orcid.org/0000-0003-4082-1949, Gonzalez-Ramos, Jon, Corr, Edward Joseph ORCID logoORCID: https://orcid.org/0000-0003-1980-4642, Stewart, Brian ORCID logoORCID: https://orcid.org/0000-0001-8084-573X, de la Vega, David, Burt, Graeme ORCID logoORCID: https://orcid.org/0000-0002-0315-5919 and Fernandez, Igor;
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