Voltage Reduction Field Test on a Distribution Substation

This paper highlights the relationship between power demand and voltage level on the distribution network. It shows how a small change in voltage with existing assets delivers a very meaningful response in power demand and in energy consumption. A 24 hour field trial at a utility without any experience with Conservation Voltage Reduction (CVR) is described. CVR effects are assessed by a combined comparison-regression method resulting in at least 9.42MWh energy saved during the test, equivalent to the consumption of 848 households in the region. The energy savings achievable within the network under this study have been characterized and the attainable yearly savings on the Canary Islands distribution networks, are on the whole estimated.