Conservation Voltage Reduction
Posted 30 November 2005 - 09:47 PM
My question is:-
How is the energy being saved?
I do understand where some of the energy is being saved but I don't want to lead this forum down a specific route. I would like to open this up for debate......
Any ideas and suggestions or hunches are welcome.
Posted 11 January 2006 - 07:36 PM
R. W. Beck, Inc
kfagen (at) rwbeck (dot) com
Posted 12 January 2006 - 10:08 AM
If you reduce the voltage on induction motors, you will lower the flux in the iron and reduce the iron loss, however, in order to produce the same shaft power with reduced flux, the slip increases, (the rotor slows slightly) the work component of the stator current increases and the magnetising current reduces. There is a reduction in iron loss but in most cases an increase in copper loss so no real gain, and often a loss situation. If the motor is operatig at very light load, there can be a reduction in magnetising curent , iron loss and copper loss.
The reduction in line voltage will reduce the thermal work that is done, but not the rotational work. In domestic systems, the reduction in voltage can result in a reduced current. In industrial systems, the reduction in line voltage can result in an increase in current and copper losses.
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Posted 17 October 2006 - 09:09 PM
In our case we having @ 40 % plant load is Air Heaters and Balance load is lighting and Inductive load mostly motors Maximum motors we are running through inverters ( Veriable frequency Drives).Presently my LT side system voltage is 415V to 425V.So let me know that by lowering Plant voltage upto 400V may i get Energy saving and what it will affect on my motors which are not connected through Veriable feequency drive
and what happens if voltage reduced further up to 395V by lowering Tap of Transformer .
Posted 18 October 2006 - 01:59 AM
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