[time-nuts] Loran C sounds
jfor at quik.com
Sun Feb 14 23:54:47 UTC 2010
That's more in line with what I've seen... billing for KVA plus a penalty
for high KVARs.
Interestingly, last seen, the giant wound-rotor synchronous motors at the
Bitter National Lab got a rate reduction for overexciting the rotors, so
they look like capacitors, rather than inductors.
> On 2/14/10 12:54 PM, "J. Forster" <jfor at quik.com> wrote:
>> Power companies charge for KVAs, NOT KVARs.
>>> Take a look at the poor (but commonly low) power factor.
>>> Much more volt-amps are being delivered than used to do effective work
>>> as kilowatts.
>>> Power factor correction would be a money saver if saving money were an
> PF = 0.75 isn't horrible but not great. The apparent power is 33% more
> the actual power. That's what lots of places with older motors and
> conventional fluorescent ballasts probably run.
> The electric company (at least here in southern california) doesn't charge
> for KVA or KVAR, per se. What they do is charge for kWhr, plus a penalty
> for poor PF, but the penalty isn't proportional to the VARs. It's more of
> step function, based on the peak reactive load. (measured in some fairly
> small time increment)
> For instance, on Southern California Edison tariff RTP-3 Large Realtime
> For service delivered and metered at voltages greater than 50kV,
> including Cogeneration and Small Power Production Customers, the billing
> will be increased by $0.18 per kilovar of maximum reactive
> demand imposed on the Company. (you get a 10%+ discount for getting your
> power at 50kV and above)
> For service delivered and metered at voltages of 50kV or less, including
> Cogeneration and Small Power Production Customers, the billing will be
> increased by $0.23 per kilovar of maximum reactive demand imposed on
> the Company.
More information about the time-nuts