mab2008
Electrical
- Feb 14, 2008
- 8
What is the advantage of reactive power (VAR)? How it is controlled from the power plants? Is it possible to transmit real power (KW) wihtout KVAR?
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.If a generator is motorised then surely it is no longer a generator but a synchronous motor
It is the nature of AC systems that the load controls the power factor. If the load demands VARs then VARs will flow. (Actually the current phase angle changes, nothing is "created" but VARs are a mathematical description of current phase angle related to watts that is relatively easy to work with.)Sychronous generators are pretty cool because of their abillity to vary the PF over a given range.