access icon openaccess Investigation of background noise in active distribution network and its impacts on synchrophasor estimation

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 30/10/2018, Accepted 11/12/2018, Published 15/03/2019

The next-future extensive diffusion of distributed generation and the increasing energy demands due to new components (e.g. electrical vehicles, energy storages) are changing the characteristics of the power grid at the distribution level, which makes it inevitable to introduce the synchrophasor measurement technology into the distribution network. This study analyses the power spectrum for the background noise of the field measured voltage signal of 0.4 kV in one electrical vehicle charging station. The coloured filter model is established using the autoregressive moving average process, which leads to the conclusion that the coloured noise spectrum is generally concave. The impact of background noise for the phasor estimation is evaluated in the steady state and dynamic state referring to IEEE Std C37.118.1™-2011.

Inspec keywords: electric vehicles; autoregressive moving average processes; IEEE standards; distribution networks; phasor measurement; power grids

Other keywords: phasor estimation; coloured filter model; electrical vehicles; distributed generation; power spectrum; autoregressive moving average process; distribution level; energy storages; synchrophasor estimation; increasing energy demands; study analyses; voltage 0.4 kV; active distribution network; background noise; next-future extensive diffusion; electrical vehicle charging station; synchrophasor measurement technology; coloured noise spectrum; power grid

Subjects: Power system measurement and metering; Other topics in statistics; Distribution networks; Transportation

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