Journal article

On the Inadequacy of the CVR Factor for Active Schemes

L Gutierrez-Lagos, LF Ochoa

IEEE Transactions on Power Delivery | IEEE | Published : 2020


Conservation Voltage Reduction (CVR) is a well-known technique to reduce energy consumption by reducing the supplied voltage within statutory limits. Historically, the efficacy of CVR schemes has been quantified using the CVR factor (CVRf) which relates, in a given period, voltage reduction to energy savings. This metric has proved useful in the past, where fixed voltage reductions were applied. However, this letter shows from a theoretical perspective and with a realistic case study that when used for active CVR schemes (voltages actively controlled throughout the day), the CVRf can be smaller than that for fixed voltage reductions despite the larger energy savings. This could be misleading..

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Awarded by EPSRC project MY-STORE

Awarded by EPSRC

Funding Acknowledgements

This work was supported in part by Electricity North West, U.K., through the Ofgem's Low Carbon Networks Fund Tier 2 Project "Smart Street," 2014-2017 and in part by the EPSRC project MY-STORE under Grant EP/N001974/1. Paper no. PESL-00234-2018.