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Energy efficiency and conservation are the main endeavours of engineers, system planners as well as consumers. The shareholders are always on the quest for optimised energy transmission, distribution and usage. However, one of the hurdles is the need to change the existing equipment to accommodate the changes, as it tends to be costly, especially for large installations.
One of the easiest and least invasive ways to achieve the demand response while pursuing energy efficiency is through conservation voltage reduction (CVR).
Working Principle of conservation voltage reduction
Power supply companies must ensure that the last consumer in the service line receives power at the stated voltage. However, this tends to be difficult considering the line drop, especially for long feeder lines. The supply must thus be higher than the standard level to compensate for the losses.
A downside of this is that the first consumers on the line will thus receive higher voltages than required. CVR serves to ensure that the standard rate is delivered to all the consumers, regardless of the proximity to the source.